User Manual

1 Publication 1769-UM001B-EN-P - October 2002

Chapter

Troubleshooting with the Indicators

Read this chapter to familiarize yourself with the diagnostic indicators

and their meanings.

Diagnostic Indicators

LED Indication Meaning

Module Status (MS)

OFF No power

Flashing GRN/OFF On-line but configuration missing

Solid GRN Device operational

Flashing RED/OFF Recoverable fault

• configuration incorrect

• duplicate mac id (node address) check failed

• node address switch changed

• main program checksum failed

• configured I/O size too large

Solid RED Unrecoverable fault

• terminator/end cap missing

• connector/cable between modules missing/not connected

• bad configuration memory

• watchdog tripped

Comm Adapter

DIAG

I/O Status Indicator

42128

Module Status Indicator

Diagnostic Status Indicator

Network Status Indicator