CONTREX CX-1200 - Manual (Page 324)

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DEVICE STATUS P2/2
Last Reset
Last Reset (MP-150) displays a “1” in a bit to indicate the reason for the last reset. Refer to Appendices: Appendix C
for the Last Reset (MP-150) bit map list. The Help screen for Last Reset (MP-150) also contains a bit map list.
Misc Intrpt
Miscellaneous Interrupts (MP-151) displays a “1” in a bit to indicate which of the various system interrupts may have
caused the last reset. Refer to Appendices: Appendix C for the Misc Intrpt (MP-151) bit map list. The Help screen for
Misc Intrpt (MP-151) also contains a bit map list.
MiscIntrptCntr
Miscellaneous Interrupt Counter (MP-158) displays the number of miscellaneous interrupts that occurred as the result
of bus errors, address errors, divide-by-0 errors, unexecuted instruction errors, general exceptions, and unexecuted
and spurious interrupts. You can reset this numeric value, but only in Clr Fault Cntrs (CP-491). MiscIntrptCntr (MP-
158) is used primarily for troubleshooting.
PC at Intrpt
Program Counter at Interrupt (MP-153) shows were the last interrupt of the microprocessor program counter oc-
curred . If the CX-1200 repeatedly displays the “REST FAULT” error box, then record the “PC @Intrpt” value as well
as the line just above it (which indicates the cause of the reset), before you press the clear key to continue. The
program counter at interrupt is stored in the PC at Intrpt (MP-153) Monitor Parameter for review. A value of “2560”
is normal.
Clr Fault Cntrs
To reset all the system-fault counters except Norm Pwr Ups (MP-154), enter a “1” in Clear Fault Counters (CP-491).
The error and message status bar at the bottom of the screen will flash “Flts Cleared” and the value will return to “0”.