Omron CJ1W-DRM21, CS1W-DRM21 operation manual 211

Troubleshooting with the DeviceNet Unit Indicators Section 9-1

Slave Scan List Logic Error

Master Scan List Logic Error

DeviceNet Unit Response

Records the error in the error log.

Operation will continue using the default message monitoring timer values.

Flags Allocated for C200H DeviceNet Master Unit (CIO n+24)

Bit 14 (Error Flag) and bit 03 (the Structure Error Flag) will be ON.

CIO Area Flags Allocated to DeviceNet Unit

Bits 00 and 13 of n+10 (the Unit Error Flag and Incorrect Message Monitoring Timer List Data Flag) will be ON.

Correction

Use the Configurator to register the message monitoring timer list again.

7-segment	MS indicator		NS indicator	Error log (Hex)
E7	Red (flashing)	---		021A

Likely Cause

There is an error in the contents of the slave scan list stored in non-volatile memory.

DeviceNet Unit Response

Records the error in the error log.

•The slave remote I/O communications will be stopped.

•Message processing and the exchange of data with the CPU Unit will continue. Normal operation will resume when the slave scan list is written normally. (Start the slave remote I/O communications.)

CIO Area Flags Allocated to DeviceNet Unit

Bits 00 and 03 of n+10 (the Unit Error Flag and Slave Error Flag) and bit 04 of n+14 (Invalid Setup Data Flag) will be ON.

Correction

Disable the slave, reset the allocations, and the enable the slave again or use the Configurator to reset the slave scan list.

7-segment	MS indicator		NS indicator	Error log (Hex)
E8	Red (flashing)	---		021A

Likely Cause

There is an error in the contents of the master scan list stored in non-volatile memory.

DeviceNet Unit Response

Records the error in the error log.

•The master remote I/O communications will be stopped.

•Message communications and the exchange of data with the CPU Unit as a slave will continue. Normal operation will resume when the master scan list is written normally. (Start the master remote I/O communications.)

Flags Allocated for C200H DeviceNet Master Unit (CIO n+24)

Bit 14 (Error Flag) and bit 03 (the Structure Error Flag) will be ON.

CIO Area Flags Allocated to DeviceNet Unit

Bits 00 and 01 of n+10 (the Unit Error Flag and Master Function Error Flag) and bit 04 of n+12 (the Invalid Scan List Data Flag) will be ON.

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