Rockwell Automation 1203 Serial Communications Module Series A User Manual

Page 45

Chapter 5
Configuration and Interfacing

5-9

Notes:

1. I:000/00 is any application related conditioning logic.

2. MG20:0.EN is the “enabled” status bit from the message block.

3. B3/2 is a one-shot and causes the message to be resent each time the

message block completes or errors (as long as I:000/00 is true).

4. The DF1 address of the PLC-5 is the same as its DH+ address (set by

dip switch SW1 on the PLC-5).

5. Refer to Publication 6200–6.4.11, Instruction Set Reference, for

information on the MSG block.

6. Refer to Publication 1785–6.6.1, Hardware Installation Manual, for

information on configuring the PLC-5 Channel 0 hardware.

7. Refer to Publication 6200–6.4.6, Software Configuration and

Maintenance, for information on configuring the PLC-5 Channel 0
driver.

8. Only one message may be active to a Communications Module at any

time. This requirement must be ensured by the PLC program written by
the user.