Omron CK3M Seres Hardware User Manual page 248

6 Troubleshooting
 WDTFault
Register name
Description
Range
Details
Detection timing
Recovery
Effects
Cause and cor-
rection
Precautions/
Remarks
6-20
Sys.WDTFault
Software Watchdog Timer ErrorStatus
0 to 3
Sys.WDTFault shows the software watchdog timer operation status with 2-bit data.
Bit0: Background software watchdog timer error
0: No background watchdog timer error has occurred.
1: Background watchdog timer error has occurred.
Bit1: Real-time interruption software watchdog timer error
0: No real-time interruption watchdog timer error has occurred.
1: Real-time interruption watchdog timer error has occurred.
Refer to the Power PMAC User's Manual (Cat. No. O014) for details of the software
watchdog timer.
During operation
Cycle the power supply, issue reset command ($$$) or re-initialization command ($$
$***)
User program: Stops
Hardware: Enters reset state
Cause (Assumed cause)
Background software
watchdog timer error occur-
red.
•
Real-time interruption
process took too long,
and the background
process could not be im-
plemented at the interval
set in the Sys.WDTReset
register.
Real-time interruption soft-
ware watchdog timer error
generated.
•
Real-time interruption
process could not be im-
plemented at the interval
set in the
Sys.BgWDTReset regis-
ter.
None
CK3M/CK5M Series Programmable Multi-Axis Controller Hardware User's Manual (O036)
Correction
•
Review the user pro-
gram.
•
Review the Sys.WDTRe-
set register value.
•
Review the user pro-
gram.
•
Review the
Sys.BgWDTReset regis-
ter value.
Prevention
None
None