Instruction Manual

112 Rockwell Automation Publication 1769-UM006E-EN-P - July 2013
Chapter 5 Diagnostics and Troubleshooting
Module Diagnostics
The 176-HSC module offers power-up, configuration, and post configuration
diagnostics.
Power-up Diagnostics
At module powerup, a series of internal diagnostic tests are performed. These
diagnostic tests must be successfully completed or the OK status indicator
remains off and a module error results and is reported to the controller.
45272
IN
OUT
0 2 FUSE
13OK
A0 B0 Z0
A1
B1
Z1
High Speed Counter
Table 18 - Diagnostic Indicators
Indicator Color Indicates
0 OUT Amber ON/OFF logic status of output 0
1 OUT Amber ON/OFF logic status of output 1
2 OUT Amber ON/OFF logic status of output 2
3 OUT Amber ON/OFF logic status of output 3
FUSE Red Overcurrent
OK Off No power is applied.
Red (briefly) Performing self-test.
Solid Green OK, normal operating condition.
Flashing Green OK, module in Program or Fault mode.
Solid Red or
Amber
Hardware error. Cycle power to the module. If problem persists,
replace the module.
Flashing Red Recoverable fault. Reconfigure, reset, or perform error recovery.
See
Non-critical versus Critical Module Errors on page 113. The
OK status indicator flashes red for all of the error codes in the
Configuration Error Codes table on page 117.
A0 Amber ON/OFF status of input A0
A1 Amber ON/OFF status of input A1
B0 Amber ON/OFF status of input B0
B1 Amber ON/OFF status of input B1
Z0 Amber ON/OFF status of input Z0
Z1 Amber ON/OFF status of input Z1
ALL ON Possible causes for all status indicators to be on include the following:
• Bus Error has occurred: Controller hard fault. Cycle power.
• During upgrade of controller: Normal. Do not cycle power during the upgrade.
• All status indicators will flash on briefly during power-up. This is normal.