Rockwell Automation 1747-ACNR15 ControlNet Adapter Module User Manual - Manual (Page 38)

Publication 1747-UM003A-EN-P
4-10 Application Examples
Create a Ladder Logic Program
The final step is to write a ladder program for the SLC processor, including
configuring the 1747-SCNR for slot 3 of the processor’s chassis. After
downloading the program to your processor, place it into the RUN mode. Your
program should now be able to read data from the 1746-IA16 in word I:3.3,
write to the 1746-OB16 in word O:3.2 and read data from the 1746-IV16 in
word I:3.5.
Note that your ladder program should also contain an unconditional rung with
an OTE instruction addressed to the SCNR scanner’s RUN/IDLE bit, O:3.0/
10 for this example. When the SLC processor is placed into the RUN mode,
this rung sets the SCNR scanner’s RUN/IDLE bit and places the scanner into
the RUN mode as well. The scanner begins executing the configured
connections when the RUN/IDLE bit is set.