Rockwell Automation 1747-SCNR ControlNet Scanner Module Reference Manual User Manual
Page 138
Publication 1747-RM623D-EN-P - June 2006
E-60 Application Examples
You have successfully configured peer-to-peer scheduled connections
between two 1747-SCNR scanners. You have also saved this
information to the active keeper on the network. If your ladder
programs in the two SLC processors are correctly copying data to and
from the M-files of each 1747-SCNR scanner and have an
unconditional rung with an OTE instruction addressed to the Run/Idle
bit for each scanner (bit 10 of the first output image word for the
scanners, that is, O:3.0/10 for scanner node 1 and O:1.0/10 for
scanner node 2), data transfers will begin when the two processors
are placed into the Run mode.
When each SLC processor is placed into the Run mode, the
1747-SCNR scanner’s Run/Idle bit must be set to a logical 1 to place
each scanner into the Run mode to begin executing the configured
connections.
The display on the front of your 1747-SCNR scanners should show an
image of a full glass next to the word I/O. This indicates that all
configured connections have been successfully downloaded to the
scanner. In addition, the A and OK LEDs should be solid green and
the B LED should be off, unless you are using the redundant media
option, which is not being used in this example.