Rockwell Automation 1756-XXXX ControlLogix Digital I/O Modules User Manual
Page 227
Rockwell Automation Publication 1756-UM058G-EN-P - November 2012
227
Use Ladder Logic To Perform Run Time Services and Reconfiguration
Appendix C
Reset a Fuse, Perform Pulse Test and Reset Latched Diagnostics
The following ladder logic program shows how to use ladder logic to reset an
electronic fuse for a faulted point, perform a pulse test, and to reset latched
diaganostics.
The rungs perform these functions:
•
Rungs 0 and 1 are used to perform a reset fuse service on Bits 0 and 1,
respectively. The example is of a 1756-OA8D module in slot 4.
•
Rung 2 performs a pulse test service to slot 4.
•
Rung 3 moves the results of the pulse test to a data storage location. (The
actual results appear in the message instruction tags under the tag name
EXERR).
•
Rung 4 performs a reset latched diagnostics service to slot 4. This example
shows an output module.
Click the box in each rung to see the
associated configuration and
communication.