Rockwell Automation GMLC Reference Manual - Manual (Page 573)

Publication GMLC-5.2 - November 1999
536 Fault Variables
To correct the problem:
Press the Reset button on the system module. If the problem persists,
return the controller to the manufacturer for repair.
This fault condition does not appear as an independent fault variable in
either the Tag Window or the Expression Builder.
Illegal Merge Attempt (Interpolation)
An attempted merge of two Interpolate Axes block moves has failed
(Runtime_fault = 31), because the selected interpolator:
• is accelerating,
• is decelerating, or
• has another merge pending.
To correct the problem:
Edit the application program to eliminate any merge of interpolated
moves occurring under these circumstances.
This fault condition does not appear as an independent fault variable in
either the Tag Window or the Expression Builder.
Flex I/O Missing or Failed
This fault (Runtime_fault = 30) indicates that a timeout occurred while
waiting for the serial bus to respond. This condition can be caused by:
• a failure to detect the Flex I/O, or
• a hardware problem within the controller.
To correct the problem:
1. Verify that all modules are receiving 24 volts of direct current as
required.