bridgeport 2/heidenhain tnc145

[Dar]

ok guys i finally figured out a pocket program and ran it. except for the offset
it looked swell running. i decided to run it again just to watch it. this was the next day so power was interupted. when i turned it on and tried to home it . it showed [y limit switch] . the table is almost dead center on x and y. looked under at switch and checked with meter . switches are good. any ideas would be appreciated.

thanks Dar ps it seems like every time i get a chance to learn more about it something fails. this machine is 20 years old ,it was run for the first 5 and sat idle for the next 15.

[gus]

I am betting that the y axis trip dog is stuck engaged. There are two switches in one housing, one is the y axis + - overtravel and the other is the trip dog. The machine only looks at the trip dog while homing, so it is possible that it stuck down the last time you homed, and now it homed in the middle of the table.

non flashing limit errors are software limits, not hardware[switch]

take the switch housing off, it is on the right, currently hidden by the x axis motor, and clean out the plungers so they actuate smoothly.