Publication 1747-RM001G-EN-P - November 2008
Messaging Examples 15-19
The following is the logic necessary for the SLC5/03 processor.
The following is the MSG Setup for the SLC5/03 processor.
MSG Instruction
The following rung triggers the MSG instruction with a true-to-false transition upon entering into the run mode.
Each time the MSG instruction either reaches Error or Done, rung 2:1 unlatches the enable bit, giving the
instruction a false-to-true transition the next scan. The MSG instruction sends its command for each false-to-true
transition of its rung, provided it is not in the process of sending a message.
0000
EN
DN
ER
MSG
Read/Write Message
Type Peer-To-Peer
Read/Write Read
Target Device 500CPU
Local/Remote Local
Control Block N7:100
Control Block Length 14
Setup Screen
12
13
15
0001
N7:100
N7:100
MSG_DONE_BIT
MSG_ERROR_BIT
U
N7:100
MSG_ENABLE_BIT
0002
END
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