GE 90-30/20/Micro manual Reference Name Definition

2

Table 2-6. System Status References - Continued

Reference

Name

Definition

%S0017	SNPXACT	SNP-X host is actively attached to the CPU.
%S0018	SNPX_RD	SNP-X host has read data from the CPU.
%S0019	SNPX_WT	SNP-X host has written data to the CPU.
%S0020		Set ON when a relational function using REAL data executes successfully.
		It is cleared when either input is NaN (Not a Number).
%S0032		Reserved for use by the programming software.
%SA0001	PB_SUM	Set when a checksum calculated on the application program does
		not match the reference checksum. If the fault was due to a
		temporary failure, the discrete bit can be cleared by again storing
		the program to the CPU. If the fault was due to a hard RAM
		failure, the CPU must be replaced.
%SA0002	OV_SWP	Set when the PLC detects that the previous sweep took longer than the
		time specified by the user. Cleared when the PLC detects that
		the previous sweep did not take longer than the specified time. It is also
		cleared during the transition from STOP to RUN mode. Only valid if the
		PLC is in CONSTANT SWEEP mode.
%SA0003	APL_FLT	Set when an application fault occurs. Cleared when the PLC
		transitions from STOP to RUN mode.
%SA0009	CFG_MM	Set when a configuration mismatch is detected during system
		power-up or during a store of the configuration. Cleared by
		powering up the PLC when no mismatches are present or during a store of
		configuration that matches hardware.
%SA0010	HRD_CPU	Set when the diagnostics detects a problem with the CPU hardware.
		Cleared by replacing the CPU module.
%SA0011	LOW_BAT	Set when a low battery fault occurs. Cleared by replacing the
		battery and ensuring that the PLC powers up without the low
		battery condition.
%SA0014	LOS_IOM	Set when an I/O module stops communicating with the PLC CPU. Cleared
		by replacing the module and cycling power on the main rack.
%SA0015	LOS_SIO	Set when an option module stops communicating with the PLC
		CPU. Cleared by replacing the module and cycling power on the main
		rack.
%SA0019	ADD_IOM	Set when an I/O module is added to a rack. Cleared by cycling
		power on the main rack and when the configuration matches the hardware
		after a store.
%SA0020	ADD_SIO	Set when an option module is added to a rack. Cleared by cycling power
		on the main rack and when the configuration matches the hardware after a
		store.
%SA0027	HRD_SIO	Set when a hardware failure is detected in an option module. Cleared by
		replacing the module and cycling power on the main rack.
%SA0031	SFT_SIO	Set when an unrecoverable software fault is detected in an option module.
		Cleared by cycling power on the main rack and when the configuration
		matches the hardware.

GFK-0467K Chapter 2 System Operation 2-25