whenever i use feedhold i have to press it twice to get it to work and then it freezes up my machine.  any body have any ideas?

What rev of Mach? Are there any error messages in the ticker? When you say it freezes the machine are you meaning Mach or the whole computer?

Hood

no there are no messages in the ticker.  the entire machine freezes up and i have to shut it down and restart everything to get it to work again.  it is the newest version of mach.  brian barker upgraded the system (new computer, new mach 3)  about 2-3 weeks ago.  also installed a new plc card and dura pulse spindle drive.  everything is goood other than the feedhold problem.   i dont really know any of the technical stuff but if you need more info ill try to do what i can.

thanks dave

Brians the one to talk to then if he fitted the hardware and did the upgrade as he will know the possible problem areas and as he is Mach then he should know where a problem software wise could be.
Hood