Rockwell Automation 1794-L34 FlexLogix Controller System User Manual - Manual (Page 65)

Publication 1794-UM001G-EN-P - January 2007
Place, Configure, and Monitor I/O 65
Monitor a rack-optimized connection
The controller views the DIN rail as another module in the system.
Each DIN rail has its own data. To view this data through the
programming software:
1. In the Controller Organizer, select Controller Tags. Right-click to
display the Data Monitor.
2. Expand the data display as necessary.
You can write logic to monitor the rack bits and take appropriate
action if a fault occurs. For example, the following logic determines
whether an error occurs on the Local rail. Then, the logic determines
whether the error occurred at the module in slot 0. You can continue
this logic to check each module on the rail.
ATTENTION
If you have an extended-local DIN rail (LOCAL2) or a split rail,
the modules after the 1794-CE1, -CE3 cable will fault if the
cable is disconnected. In this case, all outputs are reset,
regardless of the module configurations.