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    TRADEMARK NOTICE

    SY/MAX, SY/NET, SY/LINK, and SY/MATE are registered trademarks of Square D Company.

    PASSPORT and IO/NET are trademarks of Square D Company.

    WARNING

    UNINTENTIONAL EQUIPMENT OPERATION

    The application of this product requires expertise in the designand programming of control systems. Only persons with such

    expertise should be allowed to program, install, alter and applythis product.

    Failure to observe this precaution can result in severe personalinjury or death!

    !

    CAUTION

    EQUIPMENT DAMAGE HAZARD

    To avoid improper handling of equipment:

    1. Never remove this device while power is ON.

    2. Do not subject to static discharge. This module containselectronic components that are very susceptible to

    damage from electrostatic discharge.Failure to observe this precaution can result in equipmentdamage.

    !

    PLEASE NOTE

    Electrical equipment should be serviced only by qualified electrical maintenance personnel, and this document shouldnot be viewed as sufficient instruction for those who are not otherwise qualified to operate, service or maintain theequipment discussed. Although reasonable care has been taken to provide accurate and authoritative information in thisdocument, no responsibility is assumed by Square D for any consequences arising out of the use of this material.

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    Table of Contents

    Section Title Page

    1 Overview ...............................................................................................................................1-1

    1.1 General Information .........................................................................................................................1-1

    1.2 DRIO Module Features ....................................................................................................................1-1

    1.3 Where to Find Additional Information ..............................................................................................1-2

    2 Specifications.......................................................................................................................2-1

    2.1 Compliance Information ..................................................................................................................2-1

    2.2 Electrical Specifications ...................................................................................................................2-1

    2.3 Environmental Specifications ...........................................................................................................2-1

    2.4 Physical Specifications.....................................................................................................................2-1

    2.5 Functional Specifications .................................................................................................................2-1

    2.5.1 Register Capabilities .............................................................................................................2-1

    2.5.2 Communications Capabilities................................................................................................2-2

    2.5.3 Compatibility with Processors ...............................................................................................2-2

    2.5.4 Compatibility with TBX I/O Base Units ..................................................................................2-2

    2.5.5 Compatibility with IO/NET Interface Devices.........................................................................2-2

    3 Installing the DRIO Module..................................................................................................3-1

    3.1 General Information ........................................................................................................................3-1

    3.2 Installing the Module ........................................................................................................................3-2

    3.2.1 TBX Base Unit Mounting Information ....................................................................................3-2

    3.2.2 Base Unit Spacing .................................................................................................................3-3

    3.2.3 Enclosure Sizing....................................................................................................................3-4

    3.3 Setting the DRIO DIP Switches........................................................................................................3-6

    3.4 Field Wiring ...................................................................................................................................3-8

    3.3.1 Communication Cable ...........................................................................................................3-8

    3.3.2 Local Connections.................................................................................................................3-9

    3.3.3 Terminators .........................................................................................................................3-11

    4 Operating the DRIO Module ................................................................................................4-1

    4.1 General Information .........................................................................................................................4-14.2 DRIO Module Registers ...................................................................................................................4-1

    4.2.1 I/O Registers .........................................................................................................................4-3

    4.2.2 Configuration Registers.........................................................................................................4-3

    4.2.3 Diagnostic Registers .............................................................................................................4-4

    4.2.4 Base Unit Identity Data Request and Reply Registers..........................................................4-4

    4.3 Rack Addressing ..............................................................................................................................4-6

    4.4 Rack Addressing Example ...............................................................................................................4-7

    4.5 LIO Channel/Drop Control Registers ...............................................................................................4-9

    4.6 DRIO Module LED Operation...........................................................................................................4-9

    5 Troubleshooting ................................................................................................................5-1

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    1

    OVERVIEW

    30598-816

    Page 1-1

    Chapter 1 - Overview

    1.1 GENERAL INFORMATION

    The SY/MAX Class 8030 Type CRM270 Distributed Remote IO/NET Interface

    Module (DRIO) is one of the Remote IO/NET devices that allow the PASSPORTI/O System to control input and output devices located up to 7,500 feet away from the

    CPU rack. Access to as many as 32 remote IO/NET devices is possible through serial

    communication from the Local IO/NET Interface Module.

    Throughout this instruction bulletin the Local IO/NET Interface Module, or

    CRM250, is referred to as the LIO

    , while the Remote IO/NET Interface Module, or

    CRM260, is referred to as an RIO

    . The Distributed Remote IO/NET Interface

    Module, or CRM270, is referred to as the DRIO

    . These three devices, along with an

    expansion unit (the CBS010) are collectively referred to as the PASSPORT I/O

    System

    .

    This instruction bulletin provides specifications, installation, and troubleshooting

    information for the DRIO module. More information about the IO/NET InterfaceSystem is contained in the Class 8030 Type CRM250 Local IO/NET Interface Module

    Instruction Bulletin

    (#30598-782).

    The DRIO modules are mounted on the TBX series of distributed I/O base units and

    are connected to the Local IO/NET Interface module (LIO) by way of either a single

    shielded, twisted-pair or twin-axial cable. The cable is wired to a removable terminal

    block connector on the face of each module. Up to two base units can be supported by

    a single DRIO module. When two base units are required at a single drop, the DRIO

    module is mounted on the primary base unit and a TBX CBS010 Expansion Interface

    is mounted on the second base unit, providing the electrical connection to the DRIO.

    Information exchanged between the DRIO and the LIO consists of I/O, diagnostic,

    and configuration register data, register status, DRIO status, and base unit EEPROMdata. The continuous exchange of data between the LIO and the DRIO is independent

    of the CPU scan.

    Serial drops connected on the single physical channel of the LIO must be

    daisy-chained together. There can be up to 32 drops per LIO. Type CRM270 (DRIO)

    and Type CRM260 (RIO) modules can be combined on the same LIO channel.

    Depending on the bit rate and cable type, the maximum cable distance per LIO may

    be as much as 7,500 feet.

    Figure 1-1 illustrates the main features of the DRIO module.

    1.2 DRIO MODULE FEATURES

    The DRIO module fully supports the IO/NET Communications network, including

    these features:

    User-selectable DIP switches to identify the DRIO module as 1 of up to 32 drops

    per LIO

    Up to 64 addressable registers per DRIO module

    Communication rates that can be selected by DIP switch, from 62.5K to 1M bits

    per second, allowing an end-to-end cable link length of up to 7,500 feet.

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    Page 1-2

    30598-816

    Chapter 1 - Overview

    Four LEDs to indicate status of the DRIO module

    Support for these diagnostic functions:

    - Failure Override

    - Auto Restart

    - Freeze Outputs (last state and preset fall-back)

    - Drop Shutdown

    User-selectable message retry count (Transmission Fault Tolerance)

    Continuous I/O updates even when power and/or communications are lost to one or

    more drops (with Failure Override set)

    1.3 WHERE TO FIND ADDITIONAL INFORMATION

    Details about the components of the PASSPORT I/O System, programming, and

    processor information can be found in the following instruction bulletins:

    SY/MAX Class 8030 Type CRM260 Remote IO/NET Interface Module Instruction

    Bulletin

    (#30598-795)

    SY/MAX Class 8030 Type CRM270 Distributed Remote IO/NET Interface Module

    Instruction Bulletin

    (#30598-816)

    TBX CBS010 Expansion Interface for PASSPORT I/O System Instruction Bulletin

    (#30598-371).

    SY/MATE Plus Class 8010 Type SFW472/73/74 Programming Software Instruction

    Bulletin

    (#30598-322)

    SY/MAX Class 8020 Type SCP4XX Model 400 Processor Instruction Bulletin

    (#30598-503)

    SY/MAX Class 8055 Type SCP452/453 Model 450 Processor Instruction Bulletin

    (#30598-526)

    SY/MAX Class 8020 Type SCP6XX Model 600 Processor Instruction Bulletin

    (#30598-609)

    SY/MAX Class 8055 Type SCP654/55 Model 650 Processor Instruction Bulletin

    (#30598-730)

    NOTE

    The Local IO/NET Interface Module (CRM250), the Remote

    IO/NET Interface Module (CRM260), and the DistributedRemote IO/NET Interface Module (CRM270) can be used onlywith SY/MAX Model 400, 450, 600, and 650 processors

    (Revision 4.0 and higher). Contact a Square D distributor forupgrade information.

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    30598-816

    Page 1-3

    Chapter 1 - Overview

    Figure 1-1 Class 8030 Type CRM270 Distributed Remote IO/NET Interface Module (DRIO)

    PHYSICAL BIT

    DROP NUMBER RATE

    1 2 3 4 5 6 7 8

    OUT

    TERMINATOR

    IN

    1

    2

    SHLD

    8030 CRM270

    8.3 in

    210 mm

    2.6

    in

    66m

    m

    CRM270 Top view

    RUN

    COM

    ACTIVE

    RCK ERR

    COM

    ERROR

    12345678

    910111213141516

    12345678

    910111213141516

    1.4

    in

    36mm

    CRM270 Side view

    Connector to TBX Base Unit

    Removable

    Terminal

    Block

    Connector

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    2

    SPECIFICATIONS

    30598-816

    Page 2-1

    Chapter 2 - Specifications

    2.1 COMPLIANCE INFORMATION

    The DRIO module complies with UL 508 and CSA C22-2 requirements; FM

    approval is pending.

    2.2 ELECTRICAL SPECIFICATIONS

    Input Power Requirements

    Input power to the DRIO module is supplied from the base unit. No user-supplied

    power is required.

    Voltage Range 24 VDC nominal (19-30 VDC)

    Current Draw Without base: 80 mA typical, 120 mA maximum; refer to the

    appropriate TBX I/O base unit instruction bulletin for the total

    current draw rating for a DRIO and a TBX base unit.

    2.3 ENVIRONMENTAL SPECIFICATIONS

    Ambient Temperature:

    Operational 32

    F to 140

    F (0

    C to 60

    C)

    Storage -40

    F to 176

    F (-40

    C to 80

    C)

    Humidity 5-95%, non-condensing

    2.4 PHYSICAL SPECIFICATIONS

    Dimensions 2.6 x 8.3 x 1.4 in (66 x 210 x 36 mm)

    Weight 0.67 lb (0.31 kg)

    (DRIO unit only)

    2.5 FUNCTIONAL SPECIFICATIONS

    2.5.1 Register Capabilities

    Each DRIO module has a maximum of 64 available registers. These registers are used

    for external I/O addressing, configuration and diagnostic data, and TBX base unit

    EEPROM access. All 64 registers can be assigned to any actual or virtual slot. For

    any slot that you assign registers to, you must assign the minimum number of

    registers required. The minimum number of registers depends on the base unit type.

    See Chapter 4 for more information; refer also to the Class 8030 Type CRM250 Local

    IO/NET Interface Module Instruction Bulletin

    (#30598-782) and to the appropriate

    base unit instruction bulletin.

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    Chapter 2 - Specifications

    2.5.2 Communications Capabilities

    Method

    Half-duplex NRZI-encoded synchronous RS-485, with the LIO

    acting as the polling master

    Transmission rate

    62.5 Kbps to 1 Mbps (bits per second). Message packet

    integrity ensured with a 16-bit CRC; other flagged error

    conditions include message timeouts (no reply), collisions, and

    improper replies.

    Isolation

    300 VDC, optically coupled

    Distance

    7,500 feet maximum (see Table 3-1)

    2.5.3 Compatibility with Processors

    The PASSPORT I/O System is compatible with all SY/MAX Model 400, 450, 600,

    and 650 (Revision 4.0 and later) processors. (Contact a Square D distributor for

    upgrade information.)

    2.5.4 Compatibility with TBX I/O Base Units

    The DRIO module is compatible with the TBX family of bases and expansioninterfaces.

    2.5.5 Compatibility with IO/NET Interface Devices

    DRIO modules are compatible with Class 8030 Type CRM250 Local IO/NET

    Interface Modules (LIO) and may coexist on the IO/NET link with the Class 8030

    Type CRM260 Remote IO/NET Interface Module.

    A DRIO module cannot be wired to more than one LIO.

    The CRM270 module is not compatible with Class 8030 Type CRM210, CRM211, or

    CRM230 Local Interface Modules.

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    3

    INSTALLING THE DRIO MODULE

    30598-816

    Page 3-1

    Chapter 3 - Installing the DRIO Module

    3.1 GENERAL INFORMATION

    The form factor for the TBX Distributed I/O system is a block that is split lengthwise.

    The bottom half of the block, the TBX base unit, houses the I/O power electronics

    and serves as the mounting base for the system (see Figure 3-1). The top half of the

    block is the CRM270, which is physically mounted to the bottom half. Up to two I/Obase units can be electrically connected to one CRM270 communications interface,

    using a TBX CBS Expansion Interface to connect to the second base unit. The

    CRM270 and CBS interfaces are always mounted on TBX base units.

    CAUTION!

    EQUIPMENT DAMAGE HAZARD

    To prevent possible equipment damage, remove power from local orremote racks before inserting or removing any component, including

    interface modules or communication cable.

    Failure to observe this precaution can result in equipment damage.

    Figure 3-1 Base Unit and DRIO Module

    CRM270

    DRIO

    TBX BASE

    Ground

    Terminal

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    Page 3-2

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    Chapter 3 - Installing the DRIO Module

    3.2 INSTALLING THE DRIO

    3.2.1 TBX Base Unit Mounting Information

    The mounting dimensions for the TBX base units are shown in Figure 3-2. The base

    units can be panel mounted using either #6 machine or sheet metal screws. The base

    units also include clips and spring latches for DIN rail mounting. The base units must

    be mounted only in a horizontal orientation, as shown in Figure 3-3.

    The base unit is attached electrically to the CRM270 using a multi-pin connector. Four

    base attachment screws are used for mechanical connections. After aligning the

    electrical connector, the four corner interface-to-base mounting screws should be

    secured (6-9 in-lbs) to complete an assembled unit.

    NOTE

    To prevent exposed wiring and potential product damage, the Distributed

    I/O blocks should be mounted in protective enclosures. They are notdesigned for freestanding installation. The enclosure must be large enoughto provide for proper airflow and heat dissipation. See TBX Base UnitMounting Information .

    Figure 3-2 TBX Base Unit Mounting Dimensions

    40 Position I/O Terminal Strip

    2.1

    3in

    3.4

    3in

    0.2

    4in

    1.3

    0in

    8.27 in

    8.74 in

    9.25 in

    (235 mm)

    0.22 in

    (222 mm)

    (210 mm)

    (87mm

    )

    (54mm

    )

    (6.1mm)

    (5.6 mm)

    (33mm)

    DIN Rail Center Line

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    30598-816

    Page 3-3

    Chapter 3 - Installing the DRIO Module

    3.2.2 Base Unit Spacing

    To ensure proper airflow for cooling the TBX Distributed I/O blocks, air-gaps must bemaintained around the base unit. In general, there should be air gaps of at least one

    inch on each side and two inches above and below each base unit (Figure 3-4).

    Figure 3-3 TBX Base Mounting Configuration

    IO/NETCable

    Spacing: 1 in. (25 mm)

    ExpansionInterface

    CableExpansionBaseConnector

    LEDArray

    IO/NETConnection

    WireTrough

    Base Unit

    Terminal Strip

    2 in

    1 in

    MountingPanel

    CabinetEdge

    non-heat producing device

    2 in

    1 in

    (25.4 mm)

    (50.8 mm)

    (50.8 mm)

    Mounting Panel

    Figure 3-4 Base Unit Spacing

    (25.4 mm)

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    Chapter 3 - Installing the DRIO Module

    These dimensions assume that there are no significant heat-producing devices directly

    below the base unit. The vertical spacing requirement must be increased by 0.012

    inches per watt dissipated by any heat-producing device to ensure proper cooling of

    the base units. For example, if a power supply that dissipates thermal 25W is mounted

    directly below the base unit, a gap of0.3 inches

    (25 x 0.012 in) should be added

    to

    the minimum 2-inch clearance between the power supply and the base unit.

    3.2.3 Enclosure Sizing

    Airflow and heat dissipation are the two factors that affect the size of a control

    enclosure for TBX Distributed I/O. To ensure proper airflow around the base units,

    there should be at least a 3-inch airspace between the front of the enclosure and the top

    of the DRIO (Figure 3-5). A standard NEMA enclosure with a depth of 6 inches or

    greater is sufficient.

    Heat Dissipation

    Typically, the panel space requirement for a control panel, and the associated enclosure

    size, is large enough to ensure a sufficient heat dissipation to keep the control

    components within their rated temperature limits. However, because of the compact

    size of TBX Distributed I/O, it is necessary to check the enclosure size to ensure

    proper heat dissipation.

    Mounting Panel2.9 in

    (73.7 mm)

    (76.2 mm)

    3 in DRIOBaseUnit

    CabinetFront orDoor

    Figure 3-5 Airflow Spacing for Base Unit and DRIO Module

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    30598-816

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    Chapter 3 - Installing the DRIO Module

    The total heat into the enclosure must be dissipated out of the enclosure within the

    allowable temperature rise. The maximum allowable temperature rise is the difference

    between the maximum operating temperature of the base units (60

    C) and the ambient

    air temperature outside the enclosure. Assuming the size of the enclosure is known, the

    heat rise for a non-vented enclosure can be calculated using the following equation

    (note that this equation is for nominal conditions):

    Heat rise (

    C) = 2.3f [144P / (mHW + 2HD + DW)]

    where

    f = material factor (painted steel = 1.0, stainless steel or aluminum = 1.5)

    P = total power dissipation by devices in enclosure (Watts)

    m = mounting factor (pole-mounted = 1.7, wall-mounted = 1)

    H = enclosure height (inches)

    W= enclosure width (inches)

    D = enclosure depth (inches)

    For example, a wall-mounted, stainless steel enclosure with the dimensions of 24 H x

    24 W x 8 D, with a total power dissipation of 60W will have a heat rise of the

    following:

    2.3(1.5) [144(60) / (1(24)(24) + 2(24)(8) + (8)(24))] = 25.88

    C

    Rounding up to 26

    C, the maximum allowable ambient temperature is 34

    C (60

    C -

    26

    C). Assuming the ambient temperature is lower than 34

    C, the enclosure is

    sufficiently large to dissipate the internal heat. If the ambient is higher than 34

    C,

    either the enclosure size can be increased or a painted steel enclosure can be used.

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    Chapter 3 - Installing the DRIO Module

    3.3 SETTING THE DRIO SWITCHES

    The DRIO module has an eight-position DIP switch bank above the removable

    IO/NET cable connector (Figure 3-6). Set the eight switches to the appropriate drop

    number and bit rate for each DRIO, according to Table 3-1 and Table 3-2.

    Figure 3-6 DRIO DIP Switches

    12SHLD

    1 2 3 4 5 6 7 8

    Drop #

    Switches

    Bit Rate

    Switches

    ON

    NOTE

    All drops must have a unique drop number, and all devices on the

    IO/NET link must be set to the same bit rate.

    WARNING

    UNINTENTIONAL EQUIPMENT OPERATION

    For remote IO/NET devices, be sure that DIP switch settings

    for each drop correspond with the correct bit rate and dropnumber in accordance with Tables 3-1 and 3-2 in this

    instruction bulletin. Improperly set switches causeequipment to act in an unpredictable manner.

    An improperly coded bit rate could disruptcommunication to active drops.

    An improperly coded drop number:

    - when not a rack addressed drop, will be ignored.

    - when addressing is identical for two or more drops,may create a situation where drops conflict or where

    one drop will respond while the other is ignored. TheLIO may not detect identical drops for all situations.

    Failure to observe this precaution can result in equipmentdamage, severe personal injury, or death!

    !

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    Chapter 3 - Installing the DRIO Module

    Table 3-1: DRIO Switch Settings

    Switch Number

    Physical

    Drop #

    Logical

    ChannelDrop 1 2 3 4 5

    1 1 1 OFF OFF OFF OFF OFF

    2 1 2 ON OFF OFF OFF OFF

    3 1 3 OFF ON OFF OFF OFF

    4 1 4 ON ON OFF OFF OFF

    5 1 5 OFF OFF ON OFF OFF

    6 1 6 ON OFF ON OFF OFF

    7 1 7 OFF ON ON OFF OFF

    8 1 8 ON ON ON OFF OFF

    9 2 1 OFF OFF OFF ON OFF

    10 2 2 ON OFF OFF ON OFF

    11 2 3 OFF ON OFF ON OFF

    12 2 4 ON ON OFF ON OFF

    13 2 5 OFF OFF ON ON OFF

    14 2 6 ON OFF ON ON OFF

    15 2 7 OFF ON ON ON OFF

    16 2 8 ON ON ON ON OFF

    17 3 1 OFF OFF OFF OFF ON

    18 3 2 ON OFF OFF OFF ON

    19 3 3 OFF ON OFF OFF ON

    20 3 4 ON ON OFF OFF ON

    21 3 5 OFF OFF ON OFF ON

    22 3 6 ON OFF ON OFF ON

    23 3 7 OFF ON ON OFF ON

    24 3 8 ON ON ON OFF ON

    25 4 1 OFF OFF OFF ON ON

    26 4 2 ON OFF OFF ON ON

    27 4 3 OFF ON OFF ON ON

    28 4 4 ON ON OFF ON ON

    29 4 5 OFF OFF ON ON ON

    30 4 6 ON OFF ON ON ON

    31 4 7 OFF ON ON ON ON32 4 8 ON ON ON ON ON

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    Chapter 3 - Installing the DRIO Module

    3.4 FIELD WIRING

    3.4.1 Communication Cable

    The recommended communication cable between the LIO and DRIO modules is a

    shielded twisted-pair cable (Belden 9841). The characteristics of Belden 9841 provide

    for the greatest cable distance at the highest bit rate. A shielded twin-axial cable,

    Belden 9463 (the cable used for the SY/NET network) may also be used for limited

    distances.

    The detachable cable connector can be removed from the DRIO for easier cable

    termination. To reinstall the connector, align the connector with the module pins and

    press firmly back in place. Be sure to observe the following:

    1. Route the communication cable in different wire ducts than the power wiring.

    2. Connect each end of the communication cable shield to the SHLD terminal on each

    module.

    Table 3-2: Bit Rate Settings

    Bit RatesSwitch Numbers

    6 7 8

    1M OFF OFF OFF

    500K ON OFF OFF

    250K OFF ON OFF

    125K ON ON OFF

    62.5K OFF OFF ON

    Table 3-3: Communication Cable Distances

    Bit Rate

    Maximum Length (ft.)

    Belden 9463(twin-axial)

    Maximum Length (ft.)

    Belden 9841(single twisted pair)

    1 Mbps 850 1700

    500 Kbps 1700 2500

    250 Kbps 2500 4500

    125 Kbps 4500 6500

    62.5 Kbps 5000 7500

    NOTE

    All devices on each IO/NET link must be set to the same bit rate.

    ON

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    Chapter 3 - Installing the DRIO Module

    3.4.2 Local Connections

    The PASSPORT I/O System is designed to operate using serial communication. The

    required method of wiring from one module to the next must be by daisy chain. Note

    from Figure 3-7 (opposite page) that wiring from the LIO can branch in two directions

    without violating the daisy chain rule, provided its terminator is set OUT.

    Figure 3-8 shows correct and incorrect methods of setting up a daisy chain

    configuration.

    CABLE IN STALLATI ON NOTES

    Do not mix cable types.

    When installing the communication cable to the removable cable

    connector, do not strip more jacketing, shielding, or insulation thannecessary from the cable wires. The jacketing (outer sleeve or insulator)and shielding should be stripped back approximately 1-1/2 inches. Cut

    the jacketing and all shielding (do not cut the drain wire) so that thebraided shield and the foil shield are not exposed and have no chance

    of making inadvertent contact with metallic surroundings. This will leaveonly the insulated twisted pair wires and the drain wire extending from

    the jacketing.

    The exposed drain wire that attaches to terminal SHLD must be

    insulated with tubing, to prevent inadvertent contact with metallicsurroundings and eliminate exposure during cable connector handling.The tubing should be cut to allow only 1/2 inch of bare drain wire for

    connecting to SHLD. Wrap the cut jacketing, shielding, and drain wiretubing with electrical tape to ensure no inadvertent contact.

    On the twisted pair wires, the maximum exposed bare wire for terminals1 and 2, after stripping the insulation, should be approximately 1/2 inch.

    Be consistent with color codes so that only one color is connected toterminal 1 and the other color is connected to terminal 2 in all cases.

    Figure 3-8 Correct and Incorrect Daisy Chain Configurations

    LIO

    YES

    LIO

    NO

    LIO

    NO

    YES

    LIO

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    Page 3-10

    30598-816

    Chapter 3 - Installing the DRIO Module

    For more information, refer to the Class 8030 Type CRM250 Local IO/NET Interface

    Module Instruction Bulletin

    (#30598-782).

    Figure 3-7 LIO/DRIO Terminations (Two DRIO Drops)

    12SHLD

    12SHLD

    1

    2

    SHLD

    1

    2

    SHLD

    N/C

    1

    2

    SHLD

    CRM250

    IN

    IN

    OUT

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    Chapter 3 - Installing the DRIO Module

    Wiring for all modules on the IO/NET link is straight through, with all terminal #1s

    connected together, all terminal #2s connected together, and all terminal #3s (shield)

    connected together.

    3.4.3 Terminators

    To electrically terminate the PASSPORT I/O System, set the terminator switch for thetwo end modules only

    to the IN position.

    Figure 3-7 on page 3-10 is an example of a network terminated at two DRIO drops,

    with the LIO in between. Figure 3-9 shows a larger network terminated with an LIO on

    one end and a DRIO on the other end. All modules in between the two end modules

    must

    have their terminators set OUT.

    NOTE

    The LIO can be located anywhere on the link, but its terminator is set

    IN only if it is located at either end.

    1

    2SHLD

    CRM250

    INOUT

    12

    SHLD

    CRM260

    12

    SHLD

    CRM260

    12

    SHLD

    CRM260

    IN

    LIO RIO RIO RIO

    DRIO

    DRIO

    Figure 3-9 LIO/DRIO Terminations (Larger Network)

    NOTE

    The LIO itself does not need to be on either end of the daisy chain.

    WARNING

    UNINTENTIONAL EQUIPMENT OPERATION

    Be sure that two (and only two) terminators are used in eachnetwork. Follow the diagrams shown in Figures 3-7 and 3-9. For

    more information about terminations, refer to the instructionbulletins for the CRM250 (LIO) and for the CRM260 (RIO).

    Failure to observe this precaution can result in equipment damage,severe personal injury, or death!

    !

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    NOTES

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    4

    OPERATING THE DRIO MODULE

    30598-816

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    Chapter 4 - Operating the DRIO Module

    4.1 GENERAL INFORMATION

    The DRIO module is a serial communications interface between an IO/NETCommunications network and up to two TBX Distributed I/O base units. The module

    provides visual indication of operating status of both the DRIO and the base units by

    way of status LEDs.

    Each DRIO module must be assembled with a TBX base assembly to function as a

    complete drop on the IO/NET communications link. An expansion interface module

    (for example, the TBX CBS010) can be attached to the DRIO interface to give the

    system additional I/O capabilities at any drop. The connection of the expansion base

    to the interface is with a small cable enclosed with the expansion interface. Refer to

    the TBX CBS010 Expansion Interface instruction bulletin (#30598-371) for a

    diagram of typical mounting and cabling for an assembled DRIO interface with a

    CBS expansion cable.

    4.2 DRIO MODULE REGISTERS

    There are four kinds of DRIO registers that provide information about the base units.

    DRIO registers can beglobal

    orpoint

    registers. Global

    registers affect the operation

    for the entire system;point

    registers affect the operation of individual I/O points. The

    four kinds of DRIO registers are:

    I/O

    In each base unit, one or more registers are used for the

    physical I/O. These registers should be rack addressed.

    Configuration

    Two types of configuration registers affect the operation of I/O

    points on the base unit: Base Configuration Registers

    affect

    the operation of all points on the base; Output Fall-Back State

    Configuration Registers

    affect the operation of eachcorresponding I/O point. Only base units with outputs have

    configuration registers.

    Diagnostic

    Two types of diagnostic registers exist: the Control Input

    Voltage Status Register

    indicates the state of the control

    voltage; the Output Fault Register

    shows the state of

    individual outputs with output voltage detection.

    Base

    Identity

    Each base unit has 128 bytes of Identity data. The Identity data

    provides information about the base unit, such as series and

    revision codes. The data is read-only; it cannot be altered.

    WARNING

    UNINTENTIONAL EQUIPMENT OPERATION

    The application of this product requires expertise in the designand programming of control systems. Only persons with such

    expertise should be allowed to program, install, alter and applythis product.

    Failure to observe this precaution can result in severe personalinjury or death!

    !

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    Chapter 4 - Operating the DRIO Module

    Each of these types of registers is explained in more detail in the following sections.

    4.2.1 I/O Registers

    In each base unit, one or more registers are used for the physical I/O. These are I/O

    registers

    , which do not have to be rack addressed. If they are addressed, however, the

    minimum required number of registers to be addressed is 1

    for an input base unit

    . If

    you are addressing a base with any outputs, however, you must assign at least 2

    . If lessthan the minimum required number of registers is addressed, the DRIO module will

    send a Rack Address error to the LIO, and then halt.

    In mixed I/O or bases with fewer than 16 I/O points, some of the bits of the physical

    I/O registers are not used. For the TBX DMS1625 base unit example shown in

    Table 4-1 on page 4-5, only bits 1-8 of the Input register and bits 9-16 of the Output

    Register are used.

    All Distributed I/O registers use positive logic; that is, a bit with a value of 0 indicates

    the I/O point is off, while a bit with a value of 1 indicates the I/O point is on.

    4.2.2 Configuration Registers

    There are two types of configuration registers:

    Base Configuration

    Output Fall-Back State Configuration

    The Base Configuration Registers

    affect the operation of all I/O points on the base

    and are Global registers. The Output Fall-back State Configuration Registers

    affect

    the operation of individual I/O points on the base; therefore, they are Point registers.

    Only base units with outputs have configuration registers.

    Base Configuration Registers

    The bits of these registers are used to configure each base unit for particular modes ofoperation. Because all output registers are reset after a RUN-to-HALT transition, or

    after a power cycle to the processor, all base configuration registers should be

    controlled by the users ladder logic program

    . This will ensure that proper

    configuration and status information is transmitted to the DRIO module following a

    power failure or keyswitch from HALT to RUN.

    The definition of these bits is included in the Instruction Bulletin for each base. Most

    of the bits in the Base Configuration Register are set once to initialize the base, and are

    not altered by the ladder logic program.

    WARNING

    UNINTENTIONAL EQUIPMENT OPERATION

    Do not use reserved registers and bits in ladder programs.Erratic operation may result. Refer to the base unit instructionbulletins for specific information about reserved registers andbits.

    Failure to observe this precaution can result in severe personalinjury or death!

    !

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    Output Fall-back State Configuration Register

    TBX base outputs feature an enhancement to the Freeze Outputs capability of the

    PASSPORT I/O system. In the default configuration, when the PASSPORT I/O Freeze

    bit is set and if communications between the LIO and DRIO fail, the DRIO Module

    maintains the outputs in their last state before the communications failure. This

    operation is the same as the Freeze state for the RIO.

    The Output Fall-back State Configuration register is a Point register; if a bit in the

    register corresponding to an individual output point is set to 1, and the base

    configuration register is set for Fall-back, the associated output will be set ON if

    outputs are frozen. By default, all bits are set to 0 or OFF.

    4.2.3 Diagnostic Registers

    Control Input Voltage Status Register

    Many TBX base units monitor the control voltage supplies. The status of these

    voltages is indicated in bits 1 or 2 of this Global register. When proper voltage is

    applied to the base, all bits are set to 0 or off. For more information, refer to the base

    unit Instruction Bulletins.

    Output Fault Register

    The bits in this Point register show the state of outputs with output voltage detection.

    When a bit is set to 1, a fault has been detected in the corresponding output.

    4.2.4 Base Unit Identity Data Request and Reply Registers

    The DRIO module can optionally be rack addressed to access the base unit Identity

    data. This data can be used to determine exact system configuration, or to monitor the

    system for equipment changes, for example. Each base unit has 128 bytes of Identity

    data. The Identity data can only be read by the user program; it cannot be changed.

    The first four registers of Slot 1

    are designated as the Identity Data Request andIdentity Data Reply Registers. The four registers are allocated as:

    Register 0001 Primary Base Identity Data Request Register

    Register 0002 Primary Base Identity Data Reply Register

    Register 0003 Expansion Base Identity Data Request Register

    Register 0004 Expansion Base Identity Data Reply Register

    The number of bases used affects how many registers should be rack addressed:

    1 Base

    :

    Specify 0, 2, 3 or greater

    (Do not specify 1)

    2 Bases

    :

    Specify 0, 2, 4 or greater

    (Do not specify 1 or 3)

    If an invalid number of registers is rack addressed, the DRIO module returns an error

    code to the LIO indicating an invalid remote rack address and halts. The DRIO

    remains halted until proper rack addressing is received. If more than 4 registers are

    rack addressed, the system will use them as internal storage registers.

    Accessing the Identity Data

    To access the Identity data in the primary base unit, use a programmer or programming

    software like SY/MATE Plus. Place the address of the byte to be read in the lower byte

    of the first register assigned to Slot 1. The address number is zero-based; therefore, the

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    Chapter 4 - Operating the DRIO Module

    range of byte addresses is 0-127 (00H-7FH)

    . The upper eight bits of register 1 must be

    zeroes.

    After the address is placed in register 1, and at least one update scan of the DRIO

    module has been completed

    , the value of register 2 changes to reflect the requested

    data. At this point, register 2 contains the requested address in bits 1-8, and the

    requested data in bits 9-16. Comparing the two registers provides confirmation that a

    valid read was completed. When the lower eight bits of register 1 match the lower eight

    bits of register 2, the Identity data for the requested address has been read and is

    located in the upper eight bits of register 2. See Figure 4-1.

    Users can retrieve information such as the Module Version Number and the Module

    Designation from the Identity Data Request Register. The following sections outline

    procedures for accessing this data.

    Reading the Module Version Number

    Byte 18 of the Identity Data Request Register contains the Module Version Number. To

    read this value, use the following steps:

    1. Place the value 17

    (

    11 hex

    ) into the lower 8 bits of the Identity Data Request

    Register.

    2. After the next DRIO update scan is complete, check the upper half of the Identity

    Data Request Register. The Module Version Number (in hexadecimal) will be

    contained in the upper half of the register.

    Reading the Module Designation

    The number of characters in the Module Designation may vary from model to model.

    For each module, Byte 19 of the Identity Data Request Register contains the number of

    characters that are used for the designation of that module. To read this value, use the

    following steps:

    1. Place the value 18

    (

    12 hex

    ) into the lower 8 bits of the Identity Data Request

    Register.

    Figure 4-1 Identity Access Registers

    16 9 8 1

    Requested

    Address

    16 9 8 1

    Requested

    Address

    Identity Data Request Register

    Identity Data Reply Register

    Requested

    Data

    Reserved

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    Chapter 4 - Operating the DRIO Module

    2. After the next DRIO update scan is complete, check the upper half of the Identity

    Data Request Register. The number of characters in the Module Designation will

    appear in the upper half of the register.

    3. Beginning at address 19 (13 hex), request bytes from the Identity Data Request

    Register sequentially until the total number of bytes indicated by the character

    number byte have been read.

    Each byte of Module Designation contains one ASCII character. For example, a 16input 24 VDC base module is a TBX DES 1622

    . Counting the spaces, 15 characters

    are contained in this designation (3 blanks follow the 1622

    ), so addresses 19 (13

    hex) through 33 (21 hex) would be read to obtain the full Module Designation.

    There are 16 bytes allocated for Module Designation; therefore, 16 is the largest

    designator that can be stored in the Identity Data Request Register.

    Table 4-1 outlines an example of possible register usage for a base unit.

    Table 4-1: Example of Register Usage for a TBX DMS1625 Base Unit(8 Function 24VDC Input / 8 Function Relay Output)

    Register Name/FunctionReg.

    TypeClass Point/Global

    Point Definitions

    0 1

    S0001 Input register (bits

    01-08)

    In I/O Point (01-08) Input Off/Low Input On/High

    S0002 Output register

    (bits 09-16)

    Out I/O Point (09-16) Output Off/Low Output

    On/High

    S0003 Control input

    voltage status

    register

    In Diagnostic Global

    S0004 Base configurationregister

    Out Configuration Global

    S0005 (Reserved) In

    S0006 Output fall-back

    state register

    Out Configuration Point (09-16) Set Off/Low Set On/High

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    Chapter 4 - Operating the DRIO Module

    4.3 RACK ADDRESSING

    To maintain consistency with SY/MAX I/O products, each DRIO drop is addressed

    like a remote register rack, with each TBX base unit resembling one slot. Slot

    allocation in the DRIO is as follows:

    Slot 1 Base identity

    Slot 2 Primary baseSlot 3 Expansion base

    When rack addressing anRIO

    module in a remote register rack, rack addressing begins

    with Slot 2 with no registers addressed to Slot 1. This is because the RIO uses all

    registers in Slot 1 for internal storage.

    Unlike the RIO, the DRIOs first four registers of Slot 1 are optionally used as Identity

    Data Request and Reply registers. Any registers beyond the first four registers rack

    addressed to Slot 1 become internal storage registers. If the Identity registers are not

    needed, rack addressing begins with Slot 2 for the primary base and Slot 3 for the

    expansion base.

    The DRIO module can be rack addressed for a total of 64 registers in different

    combinations. These 64 registers can be entirely allocated to just one slot, or they can

    be allocated across 16 slots (the Identity registers and the two bases being slots 1, 2

    and 3).

    Required Rack Addressing

    A connected primary or expansion base does not need to be rack addressed for the

    DRIO to run.

    If a rack addressed base unit used with the DRIO module is for inputs

    only, at least one

    register must be addressed for that base. If the base unit is for outputs

    only or is mixed

    input/output

    , at least two registers must be addressed for that base. Refer to the base

    unit instruction bulletins for specific information about register usage.

    A rack addressing example appears on page 4-7.

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    Chapter 4 - Operating the DRIO Module

    4.4 RACK ADDRESSING EXAMPLE

    Figure 4-2 provides an example of a DRIO module with a TBX DES1622 16 Function

    24 VDC Input Base Unit as the primary base unit and a TBX DSS1622 16 Function 24

    VDC 0.5A Solid State Output Base as the expansion base unit.

    The DES1622 base unit, which is the primary base unit, requires a minimum of oneregister to be rack addressed for the I/O register. A total of three registers (shown in

    Figure 4-3 as registers S1001-S1003) are addressed to include the diagnostic register.

    Six registers (S1004-S1009) are assigned to the DSS1622 expansion base, including

    all I/O, configuration, and diagnostic registers. No registers can be assigned to the

    TBX CBS010 Expansion Interface. The CBS010 is a passive device providing the

    electrical connection between the DRIO and the expansion base.

    SLOT #2

    CPU

    LIO

    S1

    START

    ADDRESS

    END

    ADDRESS S32

    LOCAL (CPU) RACK

    SLOT #1

    RI RIM

    101

    DROP #1 (LOGICAL CHANNEL 1, DROP 1)

    SLOT #9

    RIM

    101

    RIM

    101

    RIM

    101

    ROM

    221

    ROM

    221ROM

    221

    ROM

    221

    DRIO CBS010

    DES1622 DSS1622

    Figure 4-2 Rack Addressing Example

    S1009

    S1001

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    Chapter 4 - Operating the DRIO Module

    CPU RACK ADDRESSING

    PLC Model: 400

    First Last Module First Last Module

    Slot# Addr Addr Info Slot# Addr Addr Info

    01 0001 1000 INT 13 09 ---- ---- ------

    02 1001 1009 LI 10 ---- ---- ------

    03 ---- ---- ----- 11 ---- ---- ------

    04 ---- ---- ----- 12 ---- ---- ------

    05 ---- ---- ----- 13 ---- ---- ------

    06 ---- ---- ----- 14 ---- ---- ------

    07 ---- ---- ----- 15 ---- ---- ------

    08 ---- ---- ----- 16 ---- ---- ------

    Legal Addresses: 0001 to 4000

    Use ^, v, >, < to move cursor.

    Use Home, End, PgUp, PgDn to view other racks.

    REMOTE RACK ADDRESSING

    LI Slot #: 02 Channel #: 1 Drop #:

    1

    First Last Module First Last Module

    Slot# Addr Addr Info Slot# Addr Addr Info

    01 ---- ---- ----- 09 ---- ---- ------

    02 1001 1003 IN E6 10 ---- ---- ------

    03 1004 1009 IN E6 11 ---- ---- ------

    04 ---- ---- ----- 12 ---- ---- ------

    05 ---- ---- ----- 13 ---- ---- ------

    06 ---- ---- ----- 14 ---- ---- ------

    07 ---- ---- ----- 15 ---- ---- ------

    08 ---- ---- ----- 16 ---- ---- ------

    Legal Addresses: 1001 to 1009

    Use ^, v, >, < to move cursor.

    Figure 4-3 Example of Rack Addressing Assignments(SY/MATE Plus Programming Software)

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    Chapter 4 - Operating the DRIO Module

    4.5 LIO CHANNEL/DROP CONTROL REGISTERS

    The DRIO Module supports all of the Channel and Drop Control functions of the

    PASSPORT I/O System. Chapter 5 of the CRM250 LIO instruction bulletin

    (#30598-782) explains the use and operation of these registers in detail.

    Freeze State Control

    TBX base outputs feature an enhancement to the Freeze Outputs capability of the

    PASSPORT I/O system. In the default configuration, when the PASSPORT I/O Freeze

    bit is set and if communications between the LIO and DRIO fail, the DRIO Module

    maintains the outputs in their last state before the communications failure. This

    operation is the same as the Freeze state for the RIO.

    With TBX base outputs, the user can also have the DRIO set the outputs to a

    pre-defined state. In the example on page 4-6, by defining the Output Fall-back States

    in register S0006 and setting the Freeze State control bits in S0004 to the fall-back

    option, the DRIO will now set the outputs to the fall-back state when a Freeze

    condition occurs. When communications are restored, the outputs return to normal

    operation.

    4.6 DRIO MODULE LED OPERATION

    The DRIO Module has 36 LED indicators, as shown in Figure 4-4 on page 4-10. The

    top four LEDs indicate DRIO, Base Unit, and Communication Status. Chapter 5

    provides more detailed information on the use of the LED indicators, particularly as

    they are used in troubleshooting.

    The 32 I/O status LEDs are divided into two groups of 16, one group for each base

    unit. Each base status field is organized as two columns of 8 rows of LEDs labeled as

    shown in Figure 4-4. For base units containing discrete I/O points, a one-to-one

    correspondence exists between the number of the base status LED, the bit position of

    the I/O point in a SY/MAX register (1..16) and the I/O point number labeled on the

    base. During normal operation the state of each LED corresponds to the state of the

    addressed SY/MAX register bit as maintained by the DRIO module (1 = LED On, 0 =

    LED Off). In bases with fewer than sixteen I/O points, the LEDs corresponding to

    non-existent I/O points are always OFF.

    NOTE

    The LED indicators are logic-side, not load-side indicators. Duringnormal operation the state of each LED corresponds to the state of

    the addressed SY/MAX register bit as maintained by the DRIOmodule (1 = LED On, 0 = LED Off).

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    Drop Fault Indication

    Drop faults are indicated by two occurrences:

    A flashing RCK ERR LED

    The processors going into HALT.

    The RCK ERR LED is the only LED that may flash at two speeds: slowly (once per

    second) or quickly (5 times per second). The other LEDs always flash at the faster rate.

    If the condition that caused the rack error still needs to be cleared, the LED flashes at

    the slower rate (once per second). For example, if the DRIO detects an internal base

    fault or missing expansion base power, the processor goes into HALT and the RCK

    ERR LED flashes slowly (once per second). When the fault is cleared (if expansion

    base power is restored, for instance), the RCK ERR LED flashes quickly (5 times per

    second). You must turn the processor keyswitch to RUN for normal operation to

    resume.

    The RCK ERR LED will flash for both drop faults (which HALT the processor) and

    non-drop faults. If a non-drop fault such as low or missing control voltage occurs, the

    RCK ERR LED flashes at the faster rate, and the processor does not HALT. If the

    DRIO detects that an output point has a fault (for example, a short-circuit condition),

    the LED for that output flashes, but the processor does not HALT, as a drop fault did

    not occur.

    Chapter 5 explains in more detail how to interpret the flashing LEDs.

    For specific information about I/O fault indications for each base unit, refer to the

    appropriate base unit instruction bulletin.

    Figure 4-4 DRIO Module LED Display

    RUN

    COMACTIVE

    RCK ERR

    COMERROR

    1

    2

    3

    4

    5

    6

    7

    8

    9

    10

    11

    12

    13

    14

    15

    16

    1

    2

    3

    4

    5

    6

    7

    8

    9

    10

    11

    12

    13

    14

    15

    16

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    TROUBLESHOOTING

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    Chapter 5 - Troubleshooting

    5.1 GENERAL INFORMATION

    This chapter provides troubleshooting information for the DRIO module. Some

    PASSPORT system problems can be diagnosed using Tables 5-1 and 5-2.

    Table 5-1 explains the DRIO front panel LED usage, whereas Table 5-2 lists possible

    system IO/NET conditions and their associated DRIO front panel LED usage. For

    more information about troubleshooting, refer to the Class 8030 Type CRM250 Local

    IO/NET Interface Module Instruction Bulletin

    , #30598-782.

    * An error condition is defined as a loss of communication or a drop error.

    When the hardware is installed and configured properly, the most common problem

    associated with a DRIO communicating with its LIO but not controlling its associated

    I/O lies in the rack addressing of the drop. Check to ensure the following are true:

    All the modules are properly mounted.

    The power supply is operating.

    All switches are properly set.

    Registers have been assigned properly.

    The IO/NET connector is wired properly and is securely seated.

    Table 5-1: DRIO Module LEDs

    An all LEDs OFF condition indicates loss of power (the power supply is either off or is

    delivering inadequate power to the base).

    RUN (Green)

    ON

    FLASHING

    OFF

    CPU is in RUN mode.

    CPU is in DISABLE OUTPUTS mode.

    CPU is in HALT or an error condition exists.*

    COM ACTIVE (Amber)

    ON

    FLASHING

    OFF

    Communication with LIO is active.

    Halt Drop bit set.

    An error condition exists.*

    COM ERROR (Red)

    ON

    FLASHING

    OFF

    Communication between LIO and DRIO is inactive.

    Outputs are frozen.

    Valid communication exists between the LIO and DRIO.

    RCK ERR (Local Rack Error)

    (Red)

    ON

    FLASHING

    (FAST/SLOW)OFF

    The DRIO module has had an internal error.

    Error in base 1 or base 2 modules; loss of control voltage;

    see Table 5-2 for specific information.The DRIO module is functioning correctly.

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    Table 5-2: PASSPORT I/O System Conditions and Corresponding DRIO LED States

    (Page 1 of 2)

    Possible Conditions RUNCOM

    ACTIVE

    COM

    ERROR

    RCK ERR

    (Local

    Rack Error)

    Comments

    Loss of power OFF OFF OFF OFF Check power to the DRIO.

    CPU in HALT. OFF ON OFF OFF Normal operation; CPU is not

    scanning, communication is active

    and outputs are reset.

    CPU in RUN ON ON OFF OFF Normal operation; CPU is scanning

    and communication is active.

    Loss of communication.

    Outputs are reset (CPU

    state is unknown).

    OFF OFF ON OFF Communication failure between LIO

    and DRIO.

    Loss of communication.

    Outputs are frozen (CPU

    state is unknown).

    OFF OFF FLASH OFF Communication between LIO and

    DRIO has failed and outputs have

    been frozen as dictated by control bit.

    CPU in RUN. LIO Halt Drop

    bit is set.

    ON FLASH OFF OFF Normal operation; CPU is scanning,

    comunication is active, and outputs

    are reset as dictated by control bit.

    CPU in DISABLE

    OUTPUTS mode.

    FLASH ON OFF OFF Normal operation; CPU is scanning

    (outputs are disabled) and

    communication is active.

    CPU in DISABLE

    OUTPUTS mode. LIO Halt

    Drop bit set.

    FLASH FLASH OFF OFF Normal operation; CPU is scanning,

    communication is active, and outputs

    are reset as dictated by control bit.

    WARNING

    UNINTENTIONAL EQUIPMENT OPERATION

    For remote IO/NET devices, be sure that DIP switch settings correspond with

    the correct bit rate and drop number in accordance with Tables 3-1 and 3-2 of

    this instruction bulletin. Improperly set switches cause equipment to act in anunpredictable manner.

    An improperly coded bit rate could disrupt communication to active drops.

    An improperly coded drop number:

    - when not a rack addressed drop, will be ignored.

    - when addressing is identical for two or more drops, may create a situation

    where the drops conflict or where one drop will respond while the other isignored. The LIO may not detect identical drops for all situations.

    Failure to observe this precaution can result in equipment damage, severe personalinjury, or death!

    !

    Note to Table 5-2: Only the RCK ERR LED flashes at two speeds (FAST FLASH = 5 times per second; SLOW FLASH =

    1 time per second). All other LEDs flash at one speed.

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    CPU in HALT. Outputs are

    frozen.

    OFF ON FLASH OFF CPU is not scanning due to an error;

    communication between LIO and

    DRIO is active, and outputs are frozen

    as dictated by control bit.

    CPU in HALT. LIO Halt Drop

    bit is set.

    OFF FLASH OFF OFF Normal operation; CPU is not

    scanning, communication is active,

    and outputs are reset as dictated by

    control bit.

    Drop fault occurred and

    communication was shut

    down between the LIO and

    DRIO.

    OFF OFF ON SLOW

    FLASH

    Communication between LIO and

    DRIO has been shut down and error

    condition still exists. Power cycle is

    required to restart.

    Temporary loss of power to

    the expansion base unit

    OFF OFF ON FAST

    FLASH

    Communication between LIO and

    DRIO was shut down and errorcondition is cleared. Keyswitch is

    required to restart.

    DRIO had internal error

    (CPU state is unknown).

    OFF OFF OFF ON DRIO module failure; outputs are

    reset regardless of control bit settings.

    CPU in RUN; loss of control

    voltage.

    ON ON OFF FAST

    FLASH

    Check power supply and leads.

    Table 5-2: PASSPORT I/O System Conditions and Corresponding DRIO LED States

    (Page 2 of 2)

    Possible Conditions RUNCOM

    ACTIVE

    COM

    ERROR

    RCK ERR

    (Local

    Rack Error)

    Comments

    Note to Table 5-2: Only the RCK ERR LED flashes at two speeds (FAST FLASH = 5 times per second; SLOW

    FLASH = 1 time per second). All other LEDs flash at one speed.

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    Page 5-4

    30598-816

    Chapter 5 - Troubleshooting

    NOTES

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    APPENDIX A

    USING AN EXPANSION INTERFACE CABLE

    30598-816

    Page A-1

    Appendix A - Expansion Interface Cable

    The CRM270 cable connector is positioned vertically on the side of the interface

    below the hinged connector cover. The cable connector is mounted horizontally on

    the upper left side (see Figure A-1). The cable connectors include a description to

    identify which end of the cable must be attached to the CRM270 interface, and to theTBX base unit. The connectors should be firmly seated. Ensure that the connector is

    aligned with the interface or base unit connector pins before seating the cable

    connector.

    Note that in the event the expansion base loses power, the expansion base will not

    automatically restart unless power is recycled at the primary base.

    Figure A-1 Installing the Expansion Interface

    IO/NETCable

    Spacing: 1 in. (25 mm)

    ExpansionInterface

    CBS Expansion InterfaceCRM270 Remote Interface

    ExpansionInterface Cable

    Cable

    Remove end tabto close hingedsnap-lock connector cover

    Captive cable

    ExpansionBaseConnector

    LEDArray

    IO/NETConnection

    EXPANSION CABLE

    MOUNTING

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    Page A-2

    30598-816

    Appendix A - Using an Expansion Interface Cable

    NOTES

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    APPENDIX B

    READING TBX BASE UNIT IDENTITY DATA

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    Page B-1

    Appendix B - Base Unit Identity Data

    The Identity Data Request Register contains the TBX base unit identity information.The programmable logic controller cannot write to the Identity Data Request

    Register. From the ladder logic in the programmable controller, users can retrieve

    information such as the Module Version Number and the Module Designation. The

    following sections outline procedures for accessing this data.

    5.1 READING THE MODULE VERSION NUMBER

    Byte 18 of the Identity Data Request Register contains the Module Version Number.

    To read this value, use the following steps:

    1. Place the value 17

    (

    11 hex

    ) into the lower 8 bits of the Identity Data Request

    Register.

    2. After the next DRIO update scan is complete, check the upper half of the IdentityData Request Register. The Module Version Number will be contained in the

    upper half of the register.

    5.2 READING THE MODULE DESIGNATION

    The number of characters in the Module Designation may vary from model to model.

    For each module, Byte 19 of the Identity Data Request Register contains the number

    of characters that are used for the designation of that module. To read this value, use

    the following steps:

    1. Place the value 18

    (

    12 hex

    ) into the lower 8 bits of the Identity Data Request

    Register.

    2. After the next DRIO update scan is complete, check the upper half of the IdentityData Request Register. The number of characters in the Module Designation will

    appear in the upper half of the register.

    3. Beginning at address 19 (13 hex), request bytes from the Identity Data Request

    Register sequentially until the total number of bytes indicated by the character

    number byte have been read.

    Each byte of Module Designation contains one ASCII character. For example, a

    16 input 24 VDC base module is a TBX DES 1622

    . Counting the space, 15

    characters are contained in this designation (3 blanks follow the 1622

    ), so

    addresses 19 (13 hex) through 34 (22 hex) would be read to obtain the full Module

    Designation.

    There are 16 bytes allocated for Module Designation; therefore, 16 is the largest

    designator that can be stored in the Identity Data Request Register.

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