I am running Mach 3, with KSI labs Centipede, Granite devices VSD-E drives, 3 axis homemade router, with Adept slides. What I have tried to do is make sure that I don't have the HV power on until Mach3 is booted. I have done that by installing a switch on the panel. I go out boot up Mach3 with estop in and then switch on the HV and everything works. Now on shutting down I switched off the HV and shut down Mach3. Here is what the problem is, I then try to get the machine running again and cannot get rid of the estop warning page that says either the estop or the limits are open. Here is the question. When I power up the HV, also 115vac goes to the BRK board. What does the 115vac do when it goes to the BRK board, what does it control. How do you set up your machines that this doesn't happen? Should I separate the 115 from the HV and add another switch? I should be able to turn off the servos and not have any estop problems, well that is not the case. So far, when the HV power is powered up after Mach3 is booted, I haven't had any runaway axis', so that is good, but there is this estop problem. If I switched on the 115vac to the BRK board without HV power, would that solve the estop problem. Also, do the granite drives have some sort of auto-estop trigger when HV power is lost? Please help. Please tell me the sequence that one should power up machines without this happening. Any help would be appreciated. Bob.