Hey Chris,

perfect, thanks!- You pointed to exactly the right location. The stg1
and stg2 cards do have hardware watchdogs that drive the DACs to 0V.

Is anybody using that feature - does anybody have a working stg watchdog
setup that i could copy ? Or is that uncharted waters ? Or shall i write
it up so that everybody can use it ?

Cheers
Max



> On Wed, Nov 12, 2008 at 05:43:19AM +0100, Maximilian wrote:
> 
>> When i close the axis gui with the big X in the upper right corner of
>> the window my amps stay tuned on and start drifting because there is no
>> pid controller providing any commanded position. 
>> [...]
>> Hardware is a stg2 card.
> 
> Does the STG have a watchdog?  If not, you really need an external
> charge pump in your estop chain.  There's no other safe way.
> 
> Successfully exiting the software could do something graceful to the
> STG, but that's not the only way the software might "go away" while
> the DACS are on full.
> 
> 
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