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Messages - alanmaker

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General Mach Discussion / Mpg3 for Z axis on lathe
« on: June 10, 2020, 10:36:17 AM »
I have 2 mpg's working on my lathe. all was ok when on mpg1 for x axis and mpg2 for z axis. however now i  want to use a spindle encoder for speed reporting controlled via my ESS and that has to connect to MPG1.
i have moved my mpgs to mpg2 &3 but the Z movement controlled via mpg3  is slow and eratic.
i have tried all maner of settings, not helped by the fact thar
t calibration refuses to work on mpg3. I am beginning to suspect that mpg3 does not work properly on a lathe setup.
i have tried swapping things about including alt a and alt b and physically changing the wiring. plus the counts and velocity tabs in mpg setup.
any suggestions would be apprerciated!

Thanks that sounds logical as I'm sure in past machines without smooth stepper it was ok. It is interesting that on my lathe with a ethernet smooth stepper all my inputs go into a pokeys board and they work fine at all times.
I have used macropumps so will give that a go. Thanks for the help

I am running a new mill conversion with mach3 r3.043.062 and have added 5 hardwired switches via a BOB and ethernet smoothstepper. for some bizarre reason they only work when a program is stopped. if the program is running or in feed hold then they dont work.
 the buttons are cycle start, feed hold, spindle on/off and speed up/down. i have configured them to oem trig inputs and have hotkeys pointing to codes 1000, 1001 etc and they work fine. i can push cycle start but then feed hold and the rest dont respond until i stop the program, using the mouse, on feed hold and then stop. far from ideal!
I do have a valid license in my name.
I have tried uninstalling everything including all plugins and PP driver and deleted mach3 folder before a fresh install and bare minimum setup to test the switches.
I'm sure I have used this setup on other machines and don't recall a bug in this version of mach3. my lathe uses a pokeys board for switches but i added a switch as above and that doesnt work there either! so i'm begining to doubt if I'm missing something obvious
thanks in advance

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