TNC 2500 control. I had to input all the parameters on my machine due to a battery backup failure.

When the machine starts up, I get a "Tool Changer Not Back" error message. I have manually moved the changer back and forth along its track, and it certainly feels like it is all the way back. This error has never appeared before - it seems like a pretty big coincidence if it has failed.

Are there any parameters that could effect this? How can I check that the sensor and wiring are not the problem?

Thank for any help.

Cliff