GE Comprehensive Guide to Fanuc Series 90-30 Software Issues and Solutions

3

Option Module Software Failure

The Fault Group Option Module Software Failure occurs when a non-recoverable software failure occurs on a PCM or ADC module. The fault action for this group is Fatal.

Error Code: All

Name:COMMREQ Frequency Too High

Description: COMMREQs are being sent to a module faster than it can process them.

Correction: Change the PLC program to send COMMREQs to the affected module at a slower rate.

Program Block Checksum Failure

The Fault Group Program Block Checksum Failure occurs when the PLC CPU detects error conditions in program blocks received by the PLC. It also occurs when the PLC CPU detects checksum errors during power-up verification of memory or during RUN mode background checking. The fault action for this group is Fatal.

Error Code:	All
Name:	Program Block Checksum Failure
Description:	The PLC Operating Software generates this error when a program block is
	corrupted.
Correction:	(1)	Clear PLC memory and retry the store.
	(2)	Display the PLC fault table on the programmer. Contact GE Fanuc
		PLC Field Service, giving them all the information contained in the
		fault entry.

Low Battery Signal

The Fault Group Low Battery Signal occurs when the PLC CPU detects a low battery on the PLC power supply or a module, such as the PCM, reports a low battery condition. The fault action for this group is Diagnostic.

Error Code:	0
Name:	Failed Battery Signal
Description:	The CPU module (or other module having a battery) battery is dead.
Correction:	Replace the battery. Do not remove power from the rack.
Error Code:	1
Name:	Low Battery Signal
Description:	A battery on the CPU, or other module has a low signal.
Correction:	Replace the battery. Do not remove power from the rack.

GFK-0467K Chapter 3 Fault Explanation and Correction 3-11