Rockwell Automation 1746-HSCE2 Multi-Channel High Speed Counter Module - Manual (Page 84)

Publication 1746-UM002B-EN-P - August 2004
5-2 Start Up, Operation, Troubleshooting, and Debug Mode
Figure 5.1 LED Locations
Troubleshooting Three types of module-generated errors can occur:
• module diagnostic errors
• module programming errors
• application errors.
The Fault LED indicates a module diagnostic error.
The counter status bytes indicate application errors encountered by
the module.
Module Diagnostic Errors
A module diagnostic error is produced if the power up self-test or
run-time-watchdog test fails. This is an indication of a potential
hardware failure.
When it detects a diagnostic error, the module halts all operations.
Outputs are reset to zero, and a fault indication is sent to the SLC
processor. The module fault LED turns solid red.
In response to a diagnostic error, cycle power. If the condition
persists, replace the module.
COUNTER
1 0 2 3
OUTPUT STATUS
INPUT STATUS
FLT
RUN A1 B1 Z1
A2 B2 Z2
HSCE2
Output Status
Running Status
Fault Status Input Status
Fault LED Problem
Solid Red Module diagnostic error. Cycle power. If condition persists, replace
the module. Refer to “Module Diagnostic Errors” below.
Flashing Red Module output fuse has been tripped.