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Honeywell 2MLL-PSRA User Manual Page 91

Pnet i/f module.
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8.1
Introduction
This chapter describes various potential errors that occur while operating the system,
causes of errors, ways to detect them, and corrective measures.
8.2
Basic troubleshooting procedure
If there is any problem in the system, identifying the cause for the problem and taking
immediate corrective actions would improve the reliability of the system. To
troubleshoot the system, ensure that the cautions and procedures given below are
followed.
Check the following manually.
Operation status (Stop and Run).
Power ON/OFF status.
I/O device status.
Wiring status (I/O wiring, extension, and communication cable).
The status of each displays (RUN, ERR, P-RUN, STATUS LED, I/O LED, and
so on), connection to peripherals, and verify the operation condition.
Check for any abnormality.
Observe how an error can be detected:
Move the key switch to STOP and turn it ON/OFF.
Restricting range.
Identify the reason for the fault.
Is it from the PLC or external factor?
I/O module or others?
PLC program?
R210
Pnet I/F Module 2MLL-PSRA, 2MLL-PSEA User's Guide
November 2011
8. Troubleshooting
Honeywell
91

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