REXROTH VisualMotion 9 - 421 User Program Stack Overflow; 422 Parameter Transfer Error in Task %C; 423 Unimplemented Instruction

3-20 Monitoring and Diagnostics VisualMotion 9 Troubleshooting Guide
DOK-VISMOT-VM*-09VRS**-WA02-EN-P
2. Using VisualMotion Toolkit, open the DriveTop under menu selection
Commission ⇒
⇒⇒
⇒ Drives and view the status line for a description of
the drive error. Refer to the drive manual for more information.
421 User Program Stack Overflow
Cause:
The subroutine call stack for a user program task has overflowed. The
stack is an area of dedicated memory. The most likely scenario is that
there are too many nested subroutines in a task. A nested subroutine is a
subroutine within another subroutine.
Remedy:
Check the program for the following conditions:
• there is not a return for every subroutine call
• a subroutine is calling itself
• program flow has caused multiple returns
• more than 10 subroutines are nested
422 Parameter transfer error in Task %c
There is an error in the parameter transfer instruction. A communication
error message is displayed in the diagnostic message for task %c (where
%c = task letter) in which the error occurred (T-0-0122). Information on
the actual parameter number that caused the error is provided in
extended diagnostics (C-0-0124).
Using VisualMotion Toolkit,
Parameter T-0-0122: Task diagnostic message can be viewed under
Diagnostics ⇒
⇒⇒
⇒ Tasks
Parameter C-0-0124: Extended diagnostic can be viewed under
Diagnostics ⇒
⇒⇒
⇒ System
Cause:
The parameter format, parameter number, or stored value may be invalid.
Remedy:
1. Use Program Flow <F7> to locate parameter transfer instruction.
2. Verify that the parameter transfer instruction
is valid for the
program in task %c.
423 Unimplemented Instruction
Cause:
The command instruction or icon is not recognized by the current version
of GPP, GMP firmware or VisualMotion Toolkit software.
Example: A new icon function is used with older control firmware. Using
the show program flow <F7> function can identify the icon.
Remedy:
Recompile the program without the instruction indicated by the current
instruction pointer or update the firmware or VisualMotion software.
Contact Bosch Rexroth for updated firmware and software information.