Chapter 7 Programming Srtp Channel Commands; Srtp Channel Commands - GE RX3i User Manual

Chapter 7 Programming SRTP Channel Commands

This chapter describes how to implement PLC to PLC communications over the Ethernet network using SRTP
Channel commands:
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SRTP Channel Commands

- Channel Operations
-
Aborting and Re-tasking a Channel
- SRTP Channel Commands in a Redundant System
- Executing a Channel Command
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COMMREQ Format for Programming Channel Commands
- Establish Read Channel
-
Establish Write Channel
- Send Information Report
- Abort Channel
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Retrieve Detailed Channel Status
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Programming for Channel Commands
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COMMREQ Example
- Sequencing Communications Requests
- Managing Channels and TCP Connections
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Use Channel Re-Tasking to Avoid using up TCP Connections
- Client Channels TCP Resource Management
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SRTP Application Timeouts
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Monitoring Channel Status
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Differences between Series 90 and PACSystems SRTP Channels
SRTP Channel Commands
7.1
The SRTP Channel commands are a set of client PLC commands that can be used to communicate with a
server PLC.
A Channel command can establish a channel to execute multiple periodic reads or writes with a single initiation
of a COMMREQ function. A Channel command can also be used to execute a single read or write.
There are five Channel commands:
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Establish Read Channel
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Establish Write Channel
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Send Information Report
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Abort Channel
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