Allen-Bradley 1756-IA32 - Reset Fuse, Pulse Test, Latched Diagnostics

Rockwell Automation Publication 1756-UM058G-EN-P - November 2012 227
Use Ladder Logic To Perform RunTime 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.