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Be aware though that the Charge Pump was not intended as a safety device when Mach is running, it was designed as a means of stopping the twitching of motors that can occur when Windows is booting and before Mach is running.Hood
Quote from: Hood on May 05, 2010, 06:25:03 AMBe aware though that the Charge Pump was not intended as a safety device when Mach is running, it was designed as a means of stopping the twitching of motors that can occur when Windows is booting and before Mach is running.HoodI have always thought it strange that the 12.5 khz signal was originally only intended to disable the drives when loading and shutting down windows, and not used it in the traditional sense to detect the program or PC processor not running or failure. period.This has traditionally been done by inserting the output in the E-stop string, to me it makes more sense to make full use of it at all times.Nosmo.
As Hood says the problem is that some folks thing that Mach and the chargepump signal are the safety devices. (Generally speaking)A Estop chain should not depend on your PC, Mach or any other piece of circuitry working right in order to function properly.