Rockwell Automation GMLC Reference Manual - Manual (Page 569)

Publication GMLC-5.2 - November 1999
532 Fault Variables
The number of pointers a program stack can contain (“program stack
depth”) varies by controller, as follows:
The Stack Fault occurs when:
• the number of program calls to the stack exceeds the program stack
depth, or
• the number of returns exceeds the number of calls from the iCODE
script to the program stack.
The effect of this fault on program execution is the same as issuing a Stop
command. When this fault occurs:
• program execution halts,
• motion on all axes stops at 100% of Maximum Deceleration, and
• Feedback remains enabled.
GML Commander displays a message identifying the name of the
function block and the module that triggered the fault.
To correct the problem:
1. Check the block and module referenced in the error message.
2. If the referenced block precedes a Native Code block, the problem
may be iCODE corruption. If so, correct any obvious iCODE errors
in the Native Code block.
Controller Call Depth
IMC S Class 1394 Turbo 40
IMC S Class 1394 25
IMC S Class Compact 25