Rockwell Automation 57C411 Resolver Input Module - Manual (Page 36)

5Ć6
5.3.4 Illegal Interrupt Detected
Problem: All tasks in the chassis are stopped and error code 1F"
appears on the faceplate of the processor module. A hardware
interrupt has occurred but no event has been defined.
Step 1.
Verify that the user application program is correct.
Verify that your interrupt response taskcontains an
EVENT" statement that will be executed. Checkcarefully
to determine whether a higher priority taskis preventing
the interrupt response taskfrom running. Make certain
that the ordering of your statements agrees with the
examples in section 4.5.
Step 2. Verify that the hardware is working correctly.
Verify the hardware functionality by systematically
swapping out the input module, the processor module (s),
and the backplane. After each swap, if the problem is not
corrected, replace the original item before swapping out
the next item.