Tailstock condition

[littlerob]

Ok my question is: If you are building a part using the tailstock, and the very last tool is say for example a part off tool for the finished part, then use a V=Z shift for the next part. Is there a way to retract the tailstock for the part off without having to go into the parameters and change the tailstock condition from 1 to 0 every part? A tailstock ignore code maybe?

Because you can't use M56 or M55 (or the foot pedals), unless the condition is 1 but you can't run the spindle unless the tailstock is advanced.

Control 5020L

Thanks, Robert

[Superman]

Hi Rob,

Just asked the guys on the floor, then the programming manual-Mcode list
M156 =Center work interlock OFF
M157 =Center work interlock ON

Steve

[broby]

M157 Ignore Tailstock Advance In-Position
M156 Require Tailstock Advance In-Position

Cheers
Brian.

NOTE! There appears to be an interpretation difference between what the manual states (As shown by what Superman has written) and what I have stated...
Depends on your interpretation of Jinglish.
I KNOW from experience that if you want to use the tailstock, but NOT advanced into position... program M157 first!
Program... your actions as normal.
Stop the spindle.
Advance the Tailstock using M56
Use M156 to request Tailstock in-position confirmation...
Start up the spindle and carry on...
or in the scenario as stated by Littlerob...
M156 at the start of program.
machine the part, up to the part off stage.
Stop the spindle.
M55 (retract Tailstock)
M157 (ignore in-position)
M3
Part Off
M2

Brian.

[littlerob]

you guys are awesome thanks

Rob