GE 90-30/20/Micro manual Corrupted PLC Program Memory

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Error Code:	14, 27
Name:	Corrupted PLC Program Memory
Description:	The PLC operating software generates these errors when certain PLC
	operating software problems occur. These should not occur in a
	production system.
Correction:	(1) Display the PLC fault table on the programmer. Contact GE Fanuc
	PLC Field Service, giving them all the information contained in the
	fault entry.
	(2) Perform the corrections for corrupted memory.
Error Code:	27 through 4E
Name:	PLC Operating Software Error
Description:	The PLC operating software generates these errors when certain PLC
	operating software problems occur. These errors should not occur in a
	production system.
Correction:	Display the PLC fault table on the programmer. Contact GE Fanuc PLC Field
	Service, giving them all the information contained in the fault entry.
Error Code:	4F
Name:	Communications Failed
Description:	The PLC operating software (service request processor) generates this
	error when it attempts to comply with a request that requires backplane
	communications and receives a rejected response.
Correction:	(1) Check the bus for abnormal activity.
	(2) Replace the intelligent option module to which the request was
	directed.
Error Code:	50, 51, 53
Name:	System Memory Errors
Description:	The PLC operating software generates these errors when its request for a block of
	system memory is denied by the memory manager because no memory is
	available or contains errors.
Correction:	(1) Display the PLC fault table on the programmer. Contact GE Fanuc
	PLC Field Service, giving them all the information contained in the
	fault entry.
	(2) Perform the corrections for corrupted memory.
Error Code:	52
Name:	Backplane Communications Failed
Description:	The PLC operating software (service request processor) generates this
	error when it attempts to comply with a request that requires backplane
	communications and receives a rejected mail response.
Correction:	(1) Check the bus for abnormal activity.
	(2) Replace the intelligent option module to which the request was
	directed.
	(3) Check parallel programmer cable for proper attachment.
Error Code:	All Others
Name:	PLC CPU Internal System Error
Description:	An internal system error has occurred that should not occur in a
	production system.
Correction:	Display the PLC fault table on the programmer. Contact GE Fanuc PLC Field
	Service, giving them all the information contained in the fault entry.

GFK-0467K Chapter 3 Fault Explanation and Correction 3-15