KEYENCE KV Series - Manual (Page 184)

Appendices
2-160
Appendices
Error message Cause Countermeasures
Analysis Disabled
Error
System Error
Run Time Error
Divided by 0
Address Error
Illegal Instruction
Error
Watchdog Timer
Error
An unexpected error occurred
in the KV main unit. Turn off power to the KV main
unit, and then turn it on again. If
the same error occurs fre-
quently, contact your nearest
KEYENCE office.
Program Error RUN mode is selected while
there is not a program in the
KV main unit. Transfer a program to the KV
main unit, and then select RUN
mode.
Cycle Time Error The cycle time has exceeded
208 ms. (300 ms for KV-300) Change the program so that the
cycle time is shorter.
Memory Error The contents of the KV main
unit’s memory have been
erased. Reset the error, and then select
RUN mode.
CALL Instruction
Nest Error The number of nested levels in
the subroutine exceeds 4.
FOR Instruction
Nest Error The number of nested levels in
the FOR - NEXT instruction
exceeds 8.
MPS Instruction
Nest Error The number of nested levels in
the MPS - MPP instruction
exceeds 8.
An error occurred when the
program was executed. Check the
program and correct the error.
INI Instruction Nest
Error Five or more interrupts occurred
at once. Correct the program so that only
one interrupt occurs at once.
A-8 PLC errors
Error messages displayed when problems occur in a Visual KV or a conventional KV
are shown in the table below.
KVSKA Appendix.P65 08.3.11, 11:26 AM 160