GE 90-30/20/Micro manual O Fault Table Explanations, Diagnostic

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Section 3: I/O Fault Table Explanations

The I/O fault table reports data about faults in three classifications:

∙Fault category.

∙Fault type.

∙Fault description.

The faults described on the following page have a fault category, but do not have a fault type or fault group.

Each fault explanation contains a fault description and instructions to correct the fault. Many fault descriptions have multiple causes. In these cases, the error code, displayed with the additional fault information obtained by pressing CTRL-F, is used to distinguish different fault conditions sharing the same fault description. (For more information about using CTRL-F, refer to Appendix B, “Interpreting Fault Tables,” in this manual.) The Fault Category is the first two hexadecimal digits in the fifth group of numbers, as shown in the following example.

02	1F0100	00030101FF7F	0302	0200	84000000000003
				_____	Fault Category (first two hex
					digits in fifth group)

The following table enables you to quickly find a particular I/O fault explanation in this section. Each entry is listed as it appears on the programmer screen.

Loss of I/O Module

The Fault Category Loss of I/O Module applies to Model 30 discrete and analog I/O modules. There are no fault types or fault descriptions associated with this category. The fault action is

Diagnostic.

Description: The PLC operating software generates this error when it detects that a Model 30

I/O module is no longer responding to commands from the

PLC CPU, or when the configuration file indicates an I/O module is to occupy a slot and no module exists in the slot.

Correction: (1) Replace the module.

(2)Correct the configuration file.

(3)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 3-17