Hi,


I have just fitted my lathe with an MPG, 4 pulses per click, X/Z switch and X1,X10,X100 rotary step selector this is all connected to the second LPT port.  Now for the issues:-


I used the calibration screen and it gave me some results, 4 pulses per detent, 3.452 and 2.376 saved and reset.  One click send the axis off at some rate and travels about 40mm with the Step/Velocity set.  Why?


The X/Z switch works fine.


The step selector is very odd, I have it connected to 3 inputs set as OEMTrig 1,2 and 3, these are configured as OEM codes 191,192 and 193.  The gen config is set so the first 3 entries of the steps are 0.01, 0.1 and 1.0


When turning from X1 to X10 to X100 I see 0.01, 0.1, 0.01 in the DRO and when going back I see 0.01, 1.0, 0.01 By my reckoning I should see 0.01, 0.1, 1.0, 0.1, 0.01  Why? ?


Also there is no movement in Step or Multistep mode? ?


Please help its driving me nuts.
 
All I want is to be able to move 0,01,  0.1 or 1.0 with one detent.

It sounds like the MPG is being interpreted as a velocity jog rather than one increment per detent. Check the encoder pulse settings and use separate active inputs or a macro for the X1/X10/X100 selector, as OEM codes 191–193 may be cycling rather than selecting fixed steps.

The 40 mm jump suggests the MPG calibration or pulse scaling is being interpreted incorrectly. I would first test with one pulse per detent and configure the selector through the MPG increment inputs rather than separate OEM triggers, then verify each switch position in the diagnostics screen.