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« on: January 15, 2010, 05:41:36 PM »
Hi Jim,
You have my sympathy, I too was shocked the first time I selected "Servo Reverse" and watched the servo control loop crash. It seems to depend which page you read, on page 6 which is headed Prerequisites, it says "All Home and Limit switches should be connected and verified. You can use the 'Display Data Record' menu option in the 'Tools' menu of SmartTerm." Basically it tells you to do what most people would do, set up their servos using SmartTerm or other Galil utility and then run Mach and configure the Galil Plugin. Then on page 11 it shows that Servo Reverse" changes MT to -1 but leaves CE at 0. In my humble opinion it is somewhat unexpected to to find the DRO's and the physical movement working in the opposite direction, and even more of a surprise that "Servo Reverse" changes the polarity of the feedback signal in the servo control loop, if you haven't got that right before you start Mach you would be in problems. I personally would not change the polarity of the feedback in software, much safer to change the wiring. Darek is right when he points you to the Homing menu, I think you will find that by trying different combinations of "Reverse" and "Home Neg" you will get things moving in the right direction. And yes, it is weird, but Mach with Galil is Grrrrrrreat, and each with each version it gets even better. If you need any more help, come back as I have been setting up Mach with a Galil 1750 today so it is pretty fresh in my mind.
Kit