5

Non-Configurable Fault Group

The table below shows the non-configurable faults and their fault action defaults.

Fault Group

Table Type

Description

Fault Actions

Not Synchronized

Synchronized

 

 

SYS_BUS_FAIL

PLC

System bus failure.

Fatal

Fatal

 

 

 

 

 

NO_USER_PRG

PLC

No User's Program on Power-up.

Non-Fatal

Non-Fatal

 

 

 

 

 

BAD_USER_RAM

PLC

Corrupted User RAM detected on

Fatal

Fatal

 

 

Power-up.

 

 

 

 

 

 

 

WIND_CMPL_FAIL

PLC

Window Completion Failure in

Non-Fatal

Non-Fatal

 

 

Constant Sweep Mode (i.e., all windows

 

 

 

 

failed to receive their allotted time).

 

 

 

 

 

 

 

PASSWD_FAIL

PLC

Password Access Failure.

Non-Fatal

Non-Fatal

 

 

 

 

 

NULL_SYS_CNFG

PLC

NULL System Configuration for RUN

Non-Fatal

Non-Fatal

 

 

Mode.

 

 

 

 

 

 

 

CPU_SOFTWR

PLC

PLC CPU Software Failure.

Fatal

Fatal

 

 

 

 

 

 

 

More than the allowable number of I/O

 

 

TOO_MANY_IOCS

PLC

Bus Controllers were found in the

Fatal

Fatal

 

 

system.

 

 

 

 

 

 

 

 

 

Communication failure during a store

 

 

SEQ_STORE_FAIL

PLC

operation by the programmer. This

Fatal

Fatal

 

 

fault results when the start-of-store

 

 

 

 

sequence was received but not an end-

 

 

 

 

of-store sequence.

 

 

 

 

 

 

 

ADD_RCK

PLC

Addition of Extra Rack

Non-Fatal

Non-Fatal

 

 

 

 

 

ADD_IOC

I/O

Addition of or Extra IOC

Non-Fatal

Non-Fatal

 

 

 

 

 

ADD_IO_MOD

I/O

Addition of or Extra I/O Module

Non-Fatal

Non-Fatal

 

 

 

 

 

ADD_OTHR_MOD

PLC

Addition of, Reset of, or Extra Option

Non-Fatal

Non-Fatal

 

 

Module

 

 

 

 

 

 

 

IO_MOD_FAULT

I/O

I/O Module Fault

Non-Fatal

Non-Fatal

 

 

 

 

 

CPU_HARDWR

PLC

CPU Hardware Failure

Fatal

Fatal

 

 

 

 

 

MOD_HARDWR

PLC

Module Hardware Failure (for example,

Non-Fatal

Non-Fatal

 

 

Serial Port Failure on PCM

 

 

 

 

 

 

 

MOD_OTHR SOFTWR

PLC

Option Module Software Failure

Non-Fatal

Non-Fatal

 

 

 

 

 

PRG_BLK_CHKSUM

PLC

Program Block Checksum Mismatch

Fatal

Fatal

 

 

 

 

 

LOW_BATTERY

PLC

Low Battery in the System

Non-Fatal

Non-Fatal

 

 

 

 

 

CNST_SW_EXCD

PLC

Constant Sweep Exceeded

Non-Fatal

Non-Fatal

 

 

 

 

 

PLC_FTBL_FULL

PLC

PLC System Fault Table Full

Non-Fatal

Non-Fatal

 

 

 

 

 

IO_FTBL_FULL

PLC

I/O Fault Table Full

Non-Fatal

Non-Fatal

 

 

 

 

 

APPLICATION_FLT

PLC

User Application Fault

Non-Fatal

Non-Fatal

 

 

 

 

 

Fatal Faults on Both Units in the Same Sweep

It is very unlikely that a fatal fault would occur on both units in the same sweep. If that should happen, however, the CPU will consult the synchronized fault action table for one unit and the not- synchronized fault action table for the other. That will allow one of the units to stay in Run mode when the synchronized fault action is Fatal and the not-synchronized fault action is Non-Fatal.

GFK-1527A

Chapter 5 Fault Detection

5-9

Page 73
Image 73
GE 90-70 manual Non-Configurable Fault Group, Fatal Faults on Both Units in the Same Sweep