Force Feed Rate After An Index change

[dmaier]

In MPMaster under ptlchg0$ I want to have a null tool change repost the spindle speed, spindle start code, and federate after an index change without doing a forced tool change. I have the spindle speed and spindle start codes posting the way I want. I am not able to identify what triggers the feed rate to post correctly. I was playing with the plinout post block but was not getting the results I was looking for. Been at this all morning, can someone point me in the right direction?

[Leon82]

Have you tried an asterisk in front of feed?

[dmaier]

I have tried that with no luck.

[Leon82]

Should it be done in the post block that handles the rotation rather than the tool change?

[dmaier]

What post block would that be? When I setup my sequence numbers to post with rotational moves it did it under the ptlchg0$ block as well.

[nickbe10]

Run it through the debugger to find where the feed is being set for this (tho my suspicion is that it is also controlled by a gcode (rapid or feed so be prepared for some hunting) call, then Leon82's method should work (there is logic for index and not index in ptlchg0)......If you have never used the debugger, now is the time to learn. There is some good documentation, and it will help you immensely now and in the future.......Or Colin might turn up and just give you the skinny......even then run it through the debugger so you understand what's going on....I would stay and help you do it but am on my way out the door for my long weekend (no gloating intended).....

[dmaier]

When using the debugger it trails to plinout. When I add an asterisks to feed it adds a feed to every G1 line.

 

[Guest]

In that null tool change block try setting at the bottom

feed = -9999

Next time it reads a feedrate it should output

[Colin Gilchrist]

prv_feed = 9999

[Alex Dales]

you can also use the force function to output the variables without changing the previous value (as you can never be too sure that the prv_ value isn't used somewhere else in the post)

For the spindle m-code we force out the selector variable because a string select table is used when outputting spindle.

result = force(speed,speed)

result = force(spdir2,spdir2)

result = force(feed,feed)

 

Alternatively you can also call pfspindleout instead of pspindleout to force the speed and spindle output. but you will still need to force out the feed rate.