Rockwell Automation 1761 MicroLogix 1000 Programmable Controllers - Manual (Page 249)

Using the Message Instruction
13–1
13
Using the Message Instruction
This chapter contains information about communications and the message (MSG)
instruction. Specifically, this chapter contains information on:
•
types of communication
•
what the MSG instruction symbol looks like
•
typical execution time for the MSG instruction
•
how to use the MSG instruction
•
application examples and timing diagrams
Note Only Series C or later MicroLogix 1000 discrete controllers and all MicroLogix
1000 analog controllers support the MSG instruction.
Message Instruction
Instruction
Purpose Page
Mnemonic Name
Purpose Page
MSG Message
Read/Write This instruction transfers data from one node to
another via the communication port. When the
instruction is enabled, the message is sent to a
communication buffer. Replies are processed at the
end of scan. 13–3
Programming