Advanced Access to Allen-Bradley Devices with VS.NET
Win WorrallApplications/Development Engineer
Email: [email protected]
Renee SikesApplications Engineer
Email: [email protected]
NET Applications- Desktop or Web, INGEAR.NET Components Can Handle It
Local Browser Clients
Remote Browser Clients
Ethernet Ethernet
Agenda – 1 Hour INGEAR.NET Overview Unsolicited Messaging and Data
Structures Overview PeerMessage and DTEncoding
Class Live training Discussion, Questions & Answers
Visualization and Connecting to AB/GE/Modbus PLCs with VS.NET
What Is Involved?
You have an Allen-Bradley PLC that supports unsolicited messages and/or UDT, PDT, or MDT data types Logix Family
(ControlLogix, CompactLogix, MicroLogix)
PLC5-E SLC 5/05
Visual Studio 2005 or newer
Good Design and Planning Still Required
Visual Studio to 1-N Devices
INGEAR.NET Family of Visual Studio.NET Components
Connect to Allen-Bradley, GE Fanuc, and Modbus PLCs
Supported in both Visual Studio 2005, 2008, 2010 Windows Forms Console Applications System Services Web Forms Web Services
COM Wrapper for VB6 Support
Advantages of INGEAR.NET
Easy to use Runtime-free distribution, single
computer, or compact framework licenses
No point counts or other artificial limits
Self Optimized Communication
Interfaces allow for rapid and device-independent development
Unsolicited Messages
On a PC that receives the message the Endpoint is a binding of the IP Address and a specific IP port Endpoints must be
unique and not in use by any other application
Endpoint is an instance of the PeerMessage class
The PLC sends the data message to an Endpoint without a client requesting information
SCADA/HMIOPC Client OPC Server
Unsolicited Message Cycle
Normal Polling Cycle
PeerMessage Class
Handles unsolicited messages Binds the IPAddressNIC and
Protocol properties to a socket to receive the message
Each instance of the PeerMessage class must have a unique IP address and Protocol combination
Each instance of the PeerMessage class can receive messages from multiple PLCs
.LOGIX and Unsolicited Messages
For the PLC Create a MSG instruction
For INGEAR .NET .LOGIX Create an instance of the PeerMessage Class Set the IPAddressNIC and Protocol properties Set the MsgReceived Event to handle incoming
data Call the Listen method
CompactLogix /ControlLogix MSG
MicroLogix MSG
Data Structures
Mixed collections of: Atomic Types (SINT, INT, Bool, REAL) Arrays Other Structures
Categorized as: Predefined Data Types- PDT
Counter, Timer, PID, INT, Real, MSG Module-Defined Data Types (MDT)
Created by the module’s configuration profile User-Defined Data Types (UDT)
Structure created by the user UDT Example: “Additive_1”
Data Alignment Rules for UDTs
Structures must be defined on 32-bit word boundaries You may have to pad your structure to
fulfill this alignment INTs are 16-bit word boundaries SINTs are 8 bit word boundaries BOOLs of 8 or less are packed into
a SINT BOOLs of 8+ are packed into a 64-
bit array, with 32 bit alignment
Example UDT and Padding
UDT2: # bits
BOOL
BOOL
BOOL
BOOL
BOOL
BOOL 8
Total Bits 8
Padded Bits 24
Total 32
UDT1: # bits
INT 16
INT 16
BOOL
BOOL
BOOL 8
INT 16
Total Bits 56
Padded Bits 8
Total 64
Padding the Structure
DTEncoding Class
Encodes and decodes raw data bytes into structured types
Gets or Sets the Abbreviated Data Type code for ControlLogix and CompactLogix Array of internal bytes used to
check for matching data types during write operations
CRC calculation based on string of members
Unique identifier of a structure
Live Demonstration
What Tools are Needed?
For all usage scenarios No tags limits Single developer or multi-developer solutions Visual Studio 2005, Visual Studio 2008, Visual Studio
2010 INGEAR.NET Licenses Available:
Runtime Free Developer License, $999 (Modbus $599) Additional Developers, $595 (Except Modbus) Single Computer License, $299 (Except Modbus $199) Optional USB Hardware Key $150
Developers Licenses included 1 Year of Support and Upgrades. Maintenance Agreement Renewal $295
Fully Functional 10-Day Demo Available
www.ingearnet.com
Contact Information & Other Learning Opportunities
Questions later? Win Worrall
[email protected] Renee Sikes
[email protected] 888-665-3678 or +1 704-849-2773
Product Websites www.ingearnet.com
Other learning opportunities Recording of this webinar Visit softwaretoolbox.webex.com
