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General Mach Discussion / Re: thc help
« on: February 08, 2007, 04:09:37 PM »
what about our version of mach. should we update to the new one or stay with what we have. thanks for the info.
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Hello,
Hope i'm not boring you with thisone, but could it probably be that the up/down signals are inverted and-or switched?
I'm not really shure about THC sequence, because i've no experience with it (but similar capacitive height control on laser machining), but this is what i think.
As long as your tHC-unit does not report stable arc with THC on signal, your height control is inactiv. If this signal goes active, THC is enabled. If your thc-signals are crossed, and the active state is inverted(input signals tab, 'active low' setting enabled or disabled), then your system might correctly detect sheet contact, but the control would do the opposite of what is needed.
Hope this helps...
Kris.