Allen-Bradley PLC

Fault Code 397 (CompactLogix)

System faults detected

Details

System faults 397 on Allen-Bradley CompactLogix. Check controller diagnostics.

Error typefault
MeaningSystem faults
Typical causesHardware fault configuration error communication fault system fault
SolutionsCheck CompactLogix diagnostic buffer verify hardware configuration review system logs refer to Allen-Bradley documentation
Severitycritical

Catalog references

Vendor Information

Allen-BradleyFault Code 397

Utilities

Troubleshooting Steps

Troubleshooting steps

Check CompactLogix diagnostic buffer verify hardware configuration review system logs refer to Allen-Bradley documentation

Other codes

Other Allen-Bradley PLC Codes

16 – Processor fault

Processor fault detected

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38 – I/O module fault

I/O module configuration fault

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77 – Communication fault

Communication fault with remote I/O

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20 – Remote I/O fault

Remote I/O communication fault

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21 – Communication timeout

Communication timeout with remote device

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FAQ

Common questions

What is CompactLogix?

Allen-Bradley CompactLogix is a PLC series. This fault is specific to CompactLogix systems.

Community

Discussion & Experiences

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