Watchdog timer and emergency stop

6 years 4 months ago #29531660 by csar4231
Hi, I would like to put the emergency stop command ( !EX) when watchdog timer is triggered. I have read that it is possible with a script,
Do you have an example?

Thanks

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6 years 4 months ago #29531663 by niko
Hi,

I am afraid this is not possible via script. There is no interface to let you know whether the controller watchdog has expired.

I would suggest to make a keep-alive mechanism using the scripting. By sending the motor command, send also a counter value in VAR 1 and validate via script using a counter there as well.

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2 weeks 5 days ago #29535849 by jyce
Hello,
Any update of this ?

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6 days 9 hours ago #29535872 by andycavatorta
I am also looking for a way to apply an emergency stop in reaction to the watchdog timer.  So that if the controller begins a PID operation and stops receiving serial commands before finishing, the emergency stop is engaged.  This is important for safety in the event of a program error or disconnected computer. 
Is there any formula for this other than building another deadman switch system that cuts the power to the controller?

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1 day 18 hours ago #29535878 by mrfurniture5e
I'm likewise searching for a method for applying a crisis stop in response to the guard dog clock. So that assuming the regulator starts a PID activity and quits getting sequential orders prior to getting done, the crisis stop is locked in. This is significant for well-being in case of a programming mistake or disengaged PC.
Is there any recipe for this other than building another deadman change framework that slices the capacity to the regulator?
Thanks 
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