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Chapter 9. Diagnostics
9.4.16
User Application Fault
18
(Group 22)
The fault group Application Fault occurs when the CPU detects a fault in the user program.
Action: Non-configurable.
2, Software Watchdog Timer Expired
The CPU generates this error when the watchdog timer expires. The CPU stops executing the user
program and enters STOP/Halt Mode. To recover, cycle power to the CPU with battery disconnected.
Causes of timer expiration include: Looping, via jump, very long program, etc.
Correction
1) Determine what caused the expiration (logic execution, external event, etc.) and correct.
2) Use the system service function block to restart the watchdog timer.
7, Application Stack Overflow
Block call depth has exceeded the CPU capability.
Correction
Increase the program's stack size or adjust application program to reduce nesting.
11 hex/17 decimal, Program Run Time Error
A run-time error occurred during execution of a program.
Correction
Correct the specific problem in the application.
22 hex/34 decimal, Unsupported Protocol
Hardware does not support configured protocol.
33 hex/51 decimal, Flash Read Failed
Possible causes:
1) Files not in flash. (May be caused by power cycle during flash write.)
2) Could not read from flash because OEM protection is enabled.
34 hex/52 decimal, Memory Reference Out of Range
A user logic memory reference, computed during logic execution, is out of range. Includes indirect
references, array element references, and potentially other types of references.
Correction
Correct logic or adjust memory size in hardware configuration.
35 hex/53 decimal, Divide by zero attempted in user logic.
User logic contained a divide by zero operation. (Applies to ST and FBD logic.)
Correction
Correct logic.
18
Error Codes 1, 4, 5, 6, 8-15, 28, 29 and 49 are not used by PACs.
414
PACSystems* RX7i, RX3i and RSTi-EP CPU Programmer's Reference Manual
GFK-2950C
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