Tool Touch Off does not trigger ATC program

[guyvanloo]

I have this issue with a new install, this is the first machine with ATC that I convert, so i must be overlooking or misunderstanding something.

The atc change works fine until it is at the point that it has to measure the tool length. The z starts moving down, i see the visually see TT trigger, I get a "8075 WARNING: TOOL TOUCH OFF TRIPPED" but the program does not stop. It keeps moving down and i have to manually abort the program.

Hope anybody here can help.

https://share.icloud.com/photos/046OnBs ... FebFx9ae-g

[cnckeith]

hello.
what make model TT are you using?
does it open or close the input?
what does the PLC diagnostic screen look like when you trigger the TT by hand?

[guyvanloo]

Thanks for your reply, i was on holiday, so a slight delay from my part. It is a tool touch off that came with the machine, an air piston, with a reed switch on the shaft. The Tool touch off is configured as mechanical, if i change to conductive i get the same behavure. The PLC diagnostic shows red in normal state, and green if triggered.

If i manually jog the Z down, i get the 8075, Tool touch off tripped, and it automatically stops the z axis. I can then untrip it by jogging the z up. It does however trigger quite late.

https://share.icloud.com/photos/032MMRI ... 6UU-MELEnA

[cnckeith]

please post photos of the machine and atc as well so we can understand what you are working with.