> The user really MUST follow what the board is pre-programmed to
> provide as a safety "off" state. Having a lsthe spindle start
> up without user command is pretty bad, but having a LASER turn
> on without command could be a real disaster, as there'd be no
> warning or acceleration time! This kind of careless CNC
> retrofit is totally unacceptable, and one of those things that
> keeps me up at night! (If you haven't made this clear in your
> manuals, you might want to see if it can be stated more boldly.
> Not a criticism, just that some people are really careless in
> this regard.)
>
>
> Jon
Good idea.
I will add a startup I/O section in the manual. Our daugthercards start up in
a safe state (relay driving outputs off, analog outputs at ~0V) , but if
people use raw GPIO, I need to better explain the startup/reset state.
Peter Wallace
Mesa Electronics
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