Fire alarm and ups integration

CNCModeller

Hi All,
Is there a way to use an external relay / signal to trigger a controlled shutdown of a printer?

My use cases would be to allow a controlled stop triggered by a smoke alarm or a UPS.

Any thoughts would be much appreciated.
Many thanks
Barry M

A Former User

Set up an external trigger to pause the print?
https://duet3d.dozuki.com/Wiki/Gcode#Section_M581_Configure_external_trigger
https://duet3d.dozuki.com/Wiki/Gcode#Section_M226_Gcode_Initiated_Pause
(or faster pausing if printing from SD card https://duet3d.dozuki.com/Wiki/Gcode#Section_M25_Pause_SD_print)

CNCModeller

Sounds good.

If I triggered a scripted move, inc shutting down the heaters, then cut power to the printer could I still do a restart at the last known good position pre the trigger event?

Thanks for the info.
Cheers
Barry M

A Former User

I'm sure someone who are using these features can give you more information that what is in the wiki, but, yes, its my understanding it should work.

https://duet3d.dozuki.com/Wiki/Gcode#Section_M916_Resume_print_after_power_failure

CNCModeller

Thanks for the info.
I'll give it a go once I've got the printer ready for testing. I'll check the detailed functionality prior to integration of the UPS and fire protection system.

Many thanks again,
Barry M