Message Execution Process (Rung = True) - Allen-Bradley Micro800 General Instructions Manual

Chapter 9
Communication instructions
202
MODBUSLOCPARA custom command support
Custom Commands in the range of 0-255 that are not already assigned to a
Modbus command are also supported. If a custom command is used then the
LocalCfg:ElementCnt contains the number of bytes received.
The response is received into the Local Address Data and overwrites the request
data.
Example for CMD=0x2B
•
Local Address Data 1:0x0E, READ_DEVICE_ID_MEI
•
Local Address Data 2:0x01, READ_DEV_ID_BASIC
•
Local Address Data 3:0x00, Read Vendor Object

Message execution process (Rung = TRUE)

The following process diagram describes the message instruction events that occur
when the Rung condition is True.
Rockwell Automation Publication 2080-RM001D-EN-E - February 2015