Diagnostics and Troubleshooting Fault Detection and Troubleclearing
Controller
Diagnostic Summary
(In the User Utility and Operator
Interface)
Controller
LED on CPU
Fault Detection / Troubleclearing
Menu | Status |
Item |
|
|
|
Possible Cause
Controller Action | User Action |
|
|
CPU | ADDRESS |
| ERROR |
|
|
CPU | INSTRUCTION |
| ERROR |
|
|
CPU | VECTOR |
| ERROR |
|
|
POWER LED flashes 4 times.
POWER LED flashes 4 times.
POWER LED flashes 4 times.
Address Error Detected.
Bad Instruction Detected.
Bad Vector
Interrupt.
Executes normally.
Executes normally.
Executes normally.
1.Force a cold start. (Toggle controller mode switch from PGM to RUN.)
2.Isolate system from noise and force a cold start.
3.Replace CPU board.
1.Force a cold start. (Toggle controller mode switch from PGM to RUN.)
2.Isolate system from noise and force a cold start.
3.Replace CPU board.
1.Force a cold start. (Toggle controller mode switch from PGM to RUN.)
2.Isolate system from noise and force a cold start.
3.Replace CPU board.
Release F | UMC800 Controller Installation and User Guide | 83 |
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