GFK-1527A Chapter 5 Fault Detection 5-9
5
Non-Configurable Fault GroupThe table below shows the non-configurable faults and their fault action defaults.
Fault Actions
Fault Group Table
Type Description 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
Power-up. Fatal Fatal
WIND_CMPL_FAIL PLC Window Completion Failure in
Constant Sweep Mode (i.e., all windows
failed to receive their allotted time).
Non-Fatal Non-Fatal
PASSWD_FAIL PLC Password Access Failure. Non-Fatal Non-Fatal
NULL_SYS_CNFG PLC NULL System Configuration for RUN
Mode. Non-Fatal Non-Fatal
CPU_SOFTWR PLC PLC CPU Software Failure. Fatal Fatal
TOO_MANY_IOCS PLC More than the all owable number of I/O
Bus Controll ers were fou nd in the
system. Fatal Fatal
SEQ_STORE_FAIL PLC Communication failure during a store
operation by the progra mmer. This
fault results when the start-of-store
sequence was received but not an end-
of-store sequence.
Fatal Fatal
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 M odule Non-Fatal Non-Fatal
ADD_OTHR_MOD PLC Addition of, Reset of, or Extra Option
Module Non-Fatal Non-Fatal
IO_MOD_FAULT I/O I/O Module Fault Non-Fatal Non-Fatal
CPU_HARDWR PLC CPU Hardware Failu re Fatal Fatal
MOD_HARDWR PLC Modul e Hardware Fai lure (for exampl e,
Serial Port Failure on PCM Non-Fatal Non-Fatal
MOD_OTHR SOFTWR PLC Option Module Softwar e 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 N on-Fatal
CNST_SW_EXCD PLC Constant Sweep Exceeded Non-Fatal Non-Fatal
PLC_FTBL_FULL PLC PLC Syst em 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