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PRM Integration Guide with
Pepperl+Fuchs HiDMUX2700 HART Multiplexer
This manual explains how to connect the HiDMUX2700 HART Multiplexer and configure
Yokogawas Plant Resource Manager (PRM) software.
Notes (Yokogawa):
This manual simply explains certain functional details of PRM and makes no claims as to its
suitability for a particular purpose.
No part of this manual may be transferred or reproduced without prior written consent from
Yokogawa.
Yokogawa assumes no responsibility for any direct or indirect loss or damage that arises from
the use of this manual due to circumstances that cannot be predicted in advance.
Notes (Pepperl+Fuchs):
This manual has been prepared for informational purposes only.
While Pepperl+Fuchs has made every effort to ensure the correctness and accuracy of this
documents contents, it provides neither warranties nor guarantees, express or implied,
regarding the Pepperl+Fuchs products described herein or their use.
Pepperl+Fuchs reserves the right to make modifications to the designs and specifications of the
products described herein at any time and without advance notice.
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Contents
1 Introduction .............................................................................................3
1.1 Field Connections ............................................................. ............................................................. 6
1.2 Control Connections...................................................................................................................... 6
1.3 HART Communicator................................................................................................................... 6
1.4 Grounding...................................................................................................................................... 7
2 Operation .................................................................................................8
2.1 Initial Setup.................................................................................................................................... 8
2.1.1 HiDMUX2700 Settings............................................................................................................... 8
2.1.2 RS-232/RS-485 Converter ................................................................... ....................................... 9
2.2 Start-up Sequence........................................................................................................................ 10
2.3 Controls........................................................................................................................................ 10
2.4 Indicators ............................................................... .................................................................. .... 10
2.5 Modes of Operation......................................................................................................................11
3 Principles of Operation.........................................................................12
3.1 HART Filters ............................................................................................................................... 12
3.2 Multiple Multiplexers ................................................................................................................. 13
4
Troubleshooting....................................................................................14
4.1 HiDMUX2700 ................................................................... ........................................................... 14
5 Maintenance .......................................................................................... 16
6 P+F HART Multiplexer Support on PRM.............................................. 17
7 Parts List................................................................................................23
8 Glossary................................................................................................. 24
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1 Introduction
This manual outlines the requirements for connecting the analog outputs to the
HISHPSM/32/TB-02 HART termination board. Please note that this board is available in many
different configurations, including with or without HART filters, fuses, and 200 ohm resistors.
The following text and connection diagrams refer to a connection with a DVC6000 Smart Valve,
when partial stroke testing is requested or required.
Partial stroke testing is as an alternative to periodic full stroke tests of critical ESD valves, which
typically means a disruptive process shutdown. As part of its HART diagnostic data, the
DVC6000 sends digital information on the HART loop when a partial valve stroke test is in
progress, and when the ESD valve is stuck.
This partial stroke test may be accomplished using the Pepperl+Fuchs HART termination board
(HISHPSM/32/TB-02) shown in Figure 1.
Figure 1
This HISHPSM/32/TB-02 termination board must be connected in a series between your field
devices and the control system, as shown in Figure 2.
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Figure 2
The system in Figure 2 consists of the following:
1) One of the following HPSM/32/TB-02-200R 32 channel termination boards:
HPSM/32/TB-02, 32 channels without HART filters
HPSM/32/TB-02/FUSE, 32 channels, with fuses
HPSM/32/TB-02/HF16, 16 channels with HART filters / 16 without
HPSM/32/TB-02/HF16/FUSE, 16 channels with HART filters & fuses
HPSM/32/TB-02/HF32, 32 channels with HART filters
HPSM/32/TB-02-200R, 32 channels with 200 ohm resistor in line
2) HiDMUX2700
3) RS-485/RS-232 Converter
4) Software (PRM)
In order to perform this partial stroke test, the analog output must be connected correctly to the
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HISHPSM/32/TB-02 termination board. Please refer to Figure 3 for the proper connection of the
HART analog output.
Figure 3
This connection will allow proper HART communication to the digital output and makes it
possible to perform the requested partial stroke test.
The following pages provide brief instructions on how to set up the HiDMUX2700, RS-232/RS-
485, and diagnostics. These pages are excerpted from the manual for the HPSM/32/TB-02
termination board.
G
A
B
G
A
B
RG
G
A
B
G
A
B
RG
G
A
B
G
A
B
RG
Y G R B
DATA
+
DATA
--
+24Vdc
GND
RS-485 OUT
100 ohm termination
resistor on the last MUX
Keithley M1000RS-232 / RS-485 Converter
SHIELD
RS1 T
B2
SHD+
RS2
B
A
G
B
A
G
-
SHD+
-
1
2
3
4
5
6
7
8
1
2
3
4
5
6
7
8
9
10
RS-485
24V
InputA
24V
InputB
2700MUX
SHIELDS
HD+--
RS-485
SHIELD
RS1 T
B2
SHD+
RS2
B
A
G
B
A
G
-
SHD+
-
1
2
3
4
5
6
7
8
1
2
3
4
5
6
7
8
9
10
RS-485
24V
InputA
24V
InputB
2700MUX
SHIELDS
HD+--
RS-485
SHIELD
RS1 T
B2
SHD+
RS2
B
A
G
B
A
G
-
SHD+
-
1
2
3
4
5
6
7
8
1
2
3
4
5
6
7
8
9
10
RS-485
24VInputA
24VInputB
2700MUX
SHIELDS
HD+--
RS-485
Figure 4 RS-485 Wiring
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1.1 Field Connections
Field wiring can have many variations, depending on the type of field device. The wiring will
either be in parallel or series.
1.2 Control Connections
If your unit is wired in parallel, no connections should be made to the control side
terminals.
1.3 HART Communicator
In HART communications without multi-drop mode, there is one slave (field device) and up to
two masters (e.g. multiplexer, HART Communicator, I/O module). The HART Communicator can
be connected to the field side terminals as a secondary master. In your software settings, the
HiDMUX2700 must be the primary master in order to use the HART Communicator.
There cannot be more than two masters. If three or more masters are connected, a primary/
secondary conflict will occur and communications will cease with all devices on that loop. When
the HiDMUX2700 is used with a HART compatible I/O system, the HiDMUX2700 must be
configured as the secondary master. Otherwise, configure the HiDMUX2700 as the primary
master. The handheld terminal (HHT) is a secondary master by default, and can be connected
to the loop when no other device on that loop is configured as a secondary master.
WARNING!Do not connect the HART Communicator to any intrinsically safe (IS) field wiring
unless the terminal is approved as intrinsically safe and suitable for the actual hazardous
location classification of the specific hazardous location. Also consider the HART Communicator
safety parameters and equivalent capacitance and inductance before concluding that you can
safely connect it to the IS side of the circuit.
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1.4 Grounding
The HPSM is divided into two galvanically isolated sections, each with its own shield terminal:
SHD1 and SHD2. The field side terminals are connected to SHD1, which provides a single point
for the proper grounding of the field wiring shields. The control side shield terminals and the
power supply shield terminals are connected to SHD2. SHD2 is only used for certain
applications.
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2 Operation
2.1 Initial Setup
The default settings for each HiDMUX2700 are as follows:
Address = 1
Baud rate = 19200
2.1.1 HiDMUX2700 Settings
The User Switches buffer has eight inputs from a low profile DIP switch that can be accessed
under the transparent plastic cover.The functions of the switches are as follows:
Switch 8 (T) Reserved for TEST purposes
Switch 7 (R1) BAUD RATE 1
Switch 6 (R0) BAUD RATE 0
Switch 5 (B4) ADDRESS 4
Switch 4 (B3) ADDRESS 3
Switch 3 (B2) ADDRESS 2
Switch 2 (B1) ADDRESS 1
Switch 1 (B0) ADDRESS 0
Further information is given on the front and side labels (Figure 5). The side label gives the
correct setting for each DIP switch combination.
2.1.1.1 Address
The address of the HiDMUX2700 is determined by the DIP switches as noted below (Figure 5).
Each MUX on the same RS-485 network must have a different address, but they do not have to
be sequential and do not necessarily need to start at address 1. Possible addresses are 1-31.
Address 0 is invalid and cannot be used. Note that the network properties of the software setup
are for multi-dropping. This is when multiple HiDMUX2700 multiplexers are on the same
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network, not the same I/O loop (also referred to as multi-dropping). Multi-dropping should be
enabled in the network setup.
2.1.1.2 Baud Rate
Table 1 RS-485 Baud RateSW 6 SW 7
9600 ON OFF
19200 OFF OFF
The baud rate of the HiDMUX2700 must match the baud rate of the PCs COM port and the RS-
232/RS-485 converter. All three units must use the same baud rate to function properly. The
baud rate can be either 9600 or 19200 and is selected as shown in Table 1.
Figure 5
2.1.2 RS-232/RS-485 Converter
An RS-232 to RS-485 converter must be placed between the HIS and the computers RS-232
port. Pepperl+Fuchs recommends the Phoenix Contact PSM-ME-232/485 for non-CE
applications.
If the system is set up with only one RS-232 to RS-485 converter, then the RS-485 network
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components must be less than 1,200 meters (4,000 feet) apart. For distances over 1,200 meters,
an RS-232 to RS-485 repeater can be used. The repeater amplifies the original RS-485 signal
when it is transmitted over long distances.
2.2 Start-up Sequence
The proper start-up sequence for the HiDMUX2700 is as follows:
1. Make all signal connections to the HPSM.
2. Connect RS-485 wires and adjust network settings.
3. Apply field power or source 4-20 mA.
4. Turn on power to or plug in the HiDMUX2700.
5. After the HiDMUX2700 has completed the start-up sequence, then start the AMS.
2.3 Controls
The only controls on the Pepperl+Fuchs equipment are the DIP switches noted above. All other
settings are a function of the software. Please refer to your software instruction manual forfurther details.
2.4 Indicators
Three LEDs on the front of the HiDMUX2700 indicate the status. Normal operation is as follows:
PWR ON: This green LED is lit when power is applied to the HiDMUX2700. Power is
automatically applied when the HiDMUX2700 is plugged into the HPSM.
HART TX: Indicates that the HiDMUX2700 has established a communications link with field
devices.
FAULT: Should not be lit during normal operation.
A single LED on the termination board lights when 24 V DC power is applied.
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2.5 Modes of Operation
SCAN MODE: Command to the HiDMUX2700 from the software telling the HiDMUX2700 to
periodically scan each device automatically. Otherwise, the HiDMUX2700 will only
communicate with a device when told to do so by the software.
BURST MODE: When a field device is in burst mode, it automatically sends information
without being commanded to do so. This is a break from the master-slave nature of HART
communication, but the HiDMUX2700 will support it when burst mode is selected in the
software.
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3 Principles of Operation
Referring to Figure 6, the heart of the HiDMUX2700 is the microprocessor. One serial port
together with the HART modem generates the physical layer of the HART protocol, while the
channel select circuit together with the channel multiplexer links one specific channel (device) at
a time. An RS-485 circuit completes the gateway between the maintenance workstation and the
devices. The user switches circuit provides information required by the HiDMUX2700 for
initialization and configuration. Specifically, the baud rate for communications to the
maintenance workstation and the HiDMUX2700 address are selected.
Figure 6
3.1 HART Filters
HART filters may be necessary with certain systems for the following reasons:
To increase low output impedance of DCS so the HART signals have sufficient amplitude
To remove fast transients from step changes in DCS output
To prevent disruption of DCS circuitry by HART signals
Note that when a HART filter is used, the HART signal will not be available to any monitoring
equipment on the control side of the HPSM, including the DCS or HHT. Pepperl+Fuchs
PowerSupplySection
RS-485Interface
OptoIsol.
CPU
MUX
A
HARTModem
+24V
GND
RS-485 Line
HART Channel 1
HART Channel 32
+
+
-
+
-
2700 MUX Block Diagram
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recommends HART filters for any HART output signal (valves). DCS systems from Bailey,
Fischer and Porter, Honeywell, Foxboro, and Fisher-Rosemount may require HART filters.
Consult with the valve or I/P supplier to know if filters are required for a specific control system
or field device.
HPSM/32/TB-02/HF16: Channels 1-16 have HART filters. Channels 17-32 do not.
HPSM/32/TB-02/HF32: Channels 1-32 have HART filters.
CAUTION: HART filters are only for use with output signals. Transmitters will not function when
connected to a channel with a HART filter
3.2 Multiple Multiplexers
Up to 31 HiDMUX2700 multiplexers can be connected on a single RS-485 network to support
992 devices. Multiple HiDMUX2700 units are connected in daisy-chain form, and redundant
terminals are provided for this on each board.
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4 Troubleshooting
Due to the modular nature of the HIS system, a communication failure may occur anywhere in
the data transfer link from the software to the field device. In order to identify where the loss of
communication has occurred, it is important to understand which components are working
correctly. Often, some simple checks will save hours of troubleshooting. Some of the most
common mistakes are: improper wiring connections, baud rate mismatches, improper network
settings, and improper addressing of the HiDMUX2700.
4.1 HiDMUX2700
The LEDs at the front of the HiDMUX2700 provide a convenient indication to the user that the
HiDMUX2700 is operational. During normal operation, the PWR ON LED should be lit. The
FAULT LED should be off. The HART TX LED may either be off or flashing steadily.
When power to the HiDMUX2700 is cycled or a Reset command is issued, all the LEDs will
flash once. Then, the PWR ON LED will come on, and for the next 60 to 120 seconds the HARTTX LED will repeat a sequence of three flashes and a pause. During this period, the
HiDMUX2700 is scanning each of the 32 channels. When it is finished, the HART TX LED will
either flash steadily or turn off altogether. If all of the above occur, the HiDMUX2700 is operating
properly.
In addition, the TEST setting on the option switches can be used to verify that the module is
functioning normally. Follow the procedure below to use this feature:
1. With the power off, disconnect the module from the RS-485 network and set switch 8 to
the TEST position (ON).
2. Switch the power on. The LEDs should light for about 1 second each in sequence (red,
yellow, green).
3. If the LEDs do not flash, there is a fault with the module and it should be returned for
replacement.
4. To return to normal operation, switch off power to the HiDMUX2700 and set the TEST
switch to the OFF position. Ensure that the correct baud rate is selected and that an
RS-485 address is set. Then, re-apply power.
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If you suspect the HiDMUX2700 is not functioning properly, refer to Table 2 below.
Table 2 HiDMUX2700 LED Indications
Symptom Cause Solution
Lights flash sequentially TEST switch is ON Switch off the powerSet TEST switch to OFFRestart the system
No LEDs lit Power fail or fuse open Check the 24 V DC LED andfuse
Only yellow LED lit Scanning is disabled.If scanning is enabled, then noHART devices were detected bythe HiDMUX2700
Check wiring continuity
Red LED lit Self-test fault Contact Pepperl+Fuchs forfurther instructions
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5 Maintenance
Under normal operating conditions, the Pepperl+Fuchs apparatus does not require maintenance.
It is designed to operate trouble-free and with high stability for long periods.
WARNING!Any repair made by unauthorized personnel may completely invalidate the safety
characteristics of the unit and could void all warranties. Repair not made by Pepperl+Fuchs is
fully at user's risk and responsibility. In addition, the warranty terms of the unit will be null and
void to all effect.
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6 P+F HART Multiplexer Support on PRM
The P+F HART Multiplexer uses an RS-485 serial communications link. As the PRM Field
Communication Server has an RS-232 COM port, an RS-232/RS-485 converter is used.
Figure 7
The baud rate for serial communications between the PRM Field Communication Server and
the HART Multiplexer is 19200. The baud rate setting for both the computer COM port and the
multiplexer should be 19200.
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Figure 8
After making the settings for the PRM Field Communication Server COM port, configure the
device path for PRM. As shown in the following two illustrations, create a project under LOCAL
and select ELCON2700 for the IOM type.
Figure 9
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Figure 10
Also configure the HiDMUX2700 for master configuration as per the DIP switch setting and
select the COM port that is connected to the RS-232 9 pin cable. Select Preamble 10 for HART
device communication.
Figure 11
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Figure 12
Click Apply in the Device Path Configuration Tool and then click Restart Field Comm. Service
to restart the PRM Field Communication Server.
Log on to the PRM client and go to network view. Select the HART network and go to Register
Read Device Path. Click Yes if a message window pops up to inform that this operation
could take a long time.
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Figure 13
After registering the device path for the project and the HART Multiplexer in the HART network
view, open Windows Explorer and select PrmHartMuxMaintTool.exe in the PRM/Tool folder.
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Figure 14
Enter the name of the PRM Field Communication Server and select Get Multiplexer Info. to
display the COM port, Master Multiplexer, and Slave Multiplexer data. When a communications
link is established between the PRM Field Communication Server and the HART Multiplexer, the
lights on the multiplexer will start flashing. Click Get Device List to display all the HART
devices that are connected to the Slave Multiplexer. This test will confirm that the PRM Field
Communication Server is communicating with the HART Multiplexer system and the HART
devices.
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7 Parts List
Table 3 lists the replacement parts for the HPSM. No HiDMUX2700 parts can be replaced in the
field.
Table 3 Replaceable Parts
PartPartPartPart Number DescrDescrDescrDescriptioniptioniptioniption
501300 Supply ID label
502401 Terminal blocks MVSTBW 2.5/3-ST-5.08
508100 Fuse 5x20 time-lag, 125 mA FS1, FS2
508200 Vertical fuse holder for 125 mA FS1, FS2
508300 50 mA TR5 Microfuse L1-32
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8 Glossary
DCS: Distributed control system
FSK: Frequency shift keying
HART : Highway addressable remote transducer
HHT: Hand held terminal
IS: Intrinsic safety
MW: Maintenance workstation
PC: Personal computer
PLC: Programmable logic controller
TB: Termination board