Titivating A CNC Plasma Table

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awemawson:
That's very kind Pete, but if you look 'up thread' you'll see a picture of the one I've bought :thumbup:

awemawson:
Catch 22 rears it's ugly head :bang:

Experimenting with the Dell Optiplex 780 Ultra Small Form Factor, I can set it's power sequencing so that if it looses power it will start up again when power is resumed but the running software may well corrupt. However, if the PC is closed down in an orderly manner by pressing the 'Start' tab then selecting 'Shut Down', when power is resumed the PC doesn't start up and the front panel Power button has to be pressed. Sometimes Windows is happy if it is put in 'Sleep' mode before loosing power, but about one in three times it wants to start in 'safe mode'.

So why does this matter :scratch: Well if the PC is located in the electrical enclosure YOU CANNOT PRESS THE POWER BUTTON :bang:

Now I've thought of hard wiring an external button, but that's a bit crude as the PC layout doesn't lend itself to this. So I'm coming to the conclusion that the PC will have to be strapped to the outside of the enclosure. Not the end of the world, and in practice means less plugs and sockets, as the monitor and keyboard and mouse are already external, as is the USB socket for transferring files. But it's not quite the neat solution that I'd hoped for.

As it happens I have a 'desk mount sleeve' for the Optiplex 780 USFF so actually mounting it isn't too much of an issue

russ57:
A long time ago, I fixed a "power up after power failure" on a large fleet of PC's (8000), by hacking the power on lan feature. I think we ended up with just a capacitor across the reset button - it effectively held reset low until power was fully up, then the pc saw it as the reset button being released . Did you check through all the bios options? Sometimes there is a feature to either power up, or return to the state before power fail.
-Russell

-russ

awemawson:
Thanks Russ, yes been through all the bios settings and experimented - even tried the 'wake up on Lan' as the 'network' is in fact the torch height controller via Ethernet and an Ethernet breakout board - I'd hoped that their activity might wake it up but no !

DMIOM:
Andrew - does it have a serial port? - some time ago I did something similar by using the "Wake on ring" feature in the BIOS.

Dave

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