Greetings,
When the CR1000 experiences a watchdog error, does the program recompile? In a CR1000 system I have recently implemented, I checked the status table earlier today and noticed the following:
Watchdog Errors: 1
Program Start Time: 06/11/2009 03:55:10
I was sound asleep at 03:55 this morning so obviously the CR1000 recompiled the program without my intervention.
I also experience a skipped scan every so often which is concerning me.
Regards,
Yes, the datalogger recompiles its program when a watchdog occurs. If you continue to get watch dogs you will want to look at issues such as grounding, a problem in the program, the grounding of devices connected to the datalogger, etc.
If you are seeing skipped scans, you may want to try increasing your buffer in the Scan instruction.
Regards,
Dana
Hi Dana,
Well, we had this system running on the bench for a couple of weeks with no watchdog errors. The watchdog error only appeared after we installed the system in the field. We paid particular attention to proper grounding so I don't think this would be the problem. We will check the status table each morning.
Regarding the skipped scans, the CRBasic program compiles and runs in sequential mode. Will increasing the scan buffer still help in this instance?
Thanks,
Dave
If you are running in SequentialMode, then no, increasing the scan buffer won't help. You either live with the occasional skipped scan or increase your scan rate, or, there may be less important instructions that you can put in a SlowSequence.
Dana