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« on: February 25, 2019, 06:33:07 PM »
I have had no luck with Mach4 jogging correctly.
Setup is Mach4 hobby, UC100, Sherline motor drivers, Sherline lathe, Backlash disabled (set to 0.0000)
Jogging increment set to 0.001 inch.
Jogging .001 should require 16 steps.
Testing done on Z axis.
Axis homed to 0.000
Onscreen Z+ jog button clicked, and diagnostic screen shows for motor 2 (my Z axis motor)
EX_JOG_INCR, 0, 0, 0, 0, 0, 0, 0, 0
EX_JOG_INCR, 0, 0, 0, 0, 0, 0, 0, 0
EX_JOG_INCR, 0, 0, 0, 0, 0, 0, 0, 0
EX_JOG_INCR, 0, 0, 0, 0, 0, 0, 0, 0
EX_JOG_INCR, 0, 0, 1, 0, 0, 0, 0, 0
EX_JOG_INCR, 0, 0, 1, 0, 0, 0, 0, 0
EX_JOG_INCR, 0, 0, 1, 0, 0, 0, 0, 0
EX_JOG_INCR, 0, 0, 1, 0, 0, 0, 0, 0
EX_JOG_INCR, 0, 0, 1, 0, 0, 0, 0, 0
EX_JOG_INCR, 0, 0, 2, 0, 0, 0, 0, 0
EX_JOG_INCR, 0, 0, 2, 0, 0, 0, 0, 0
EX_JOG_INCR, 0, 0, 2, 0, 0, 0, 0, 0
EX_JOG_INCR, 0, 0, 3, 0, 0, 0, 0, 0
EX_JOG_INCR, 0, 0, 3, 0, 0, 0, 0, 0
EX_JOG_INCR, 0, 0, 4, 0, 0, 0, 0, 0
EX_JOG_INCR, 0, 0, 4, 0, 0, 0, 0, 0
EX_JOG_INCR, 0, 0, 4, 0, 0, 0, 0, 0
EX_JOG_INCR, 0, 0, 5, 0, 0, 0, 0, 0
EX_JOG_INCR, 0, 0, 6, 0, 0, 0, 0, 0
EX_JOG_INCR, 0, 0, 6, 0, 0, 0, 0, 0
EX_JOG_INCR, 0, 0, 7, 0, 0, 0, 0, 0
EX_JOG_INCR, 0, 0, 7, 0, 0, 0, 0, 0
EX_JOG_INCR, 0, 0, 8, 0, 0, 0, 0, 0
EX_JOG_INCR, 0, 0, 8, 0, 0, 0, 0, 0
EX_JOG_INCR, 0, 0, 9, 0, 0, 0, 0, 0
EX_JOG_INCR, 0, 0, 10, 0, 0, 0, 0, 0
EX_JOG_INCR, 0, 0, 10, 0, 0, 0, 0, 0
EX_JOG_INCR, 0, 0, 11, 0, 0, 0, 0, 0
EX_JOG_INCR, 0, 0, 11, 0, 0, 0, 0, 0
EX_JOG_INCR, 0, 0, 12, 0, 0, 0, 0, 0
EX_JOG_INCR, 0, 0, 12, 0, 0, 0, 0, 0
EX_JOG_INCR, 0, 0, 13, 0, 0, 0, 0, 0
EX_JOG_INCR, 0, 0, 13, 0, 0, 0, 0, 0
EX_JOG_INCR, 0, 0, 13, 0, 0, 0, 0, 0
EX_JOG_INCR, 0, 0, 14, 0, 0, 0, 0, 0
EX_JOG_INCR, 0, 0, 14, 0, 0, 0, 0, 0
EX_JOG_INCR, 0, 0, 14, 0, 0, 0, 0, 0
EX_JOG_INCR, 0, 0, 15, 0, 0, 0, 0, 0
EX_JOG_INCR, 0, 0, 15, 0, 0, 0, 0, 0
EX_STOP_REQ, 0, 0, 16, 0, 0, 0, 0, 0
EX_NONE , 0, 0, 0, 0, 0, 0, 0, 0
DRO shows position at 0.001 correctly.
When clicking Z+ again, diagnostics show
EX_JOG_INCR, 0, 0, 0, 0, 0, 0, 0, 0
EX_JOG_INCR, 0, 0, 0, 0, 0, 0, 0, 0
EX_JOG_INCR, 0, 0, 0, 0, 0, 0, 0, 0
EX_JOG_INCR, 0, 0, 0, 0, 0, 0, 0, 0
EX_JOG_INCR, 0, 0, 1, 0, 0, 0, 0, 0
EX_JOG_INCR, 0, 0, 1, 0, 0, 0, 0, 0
EX_JOG_INCR, 0, 0, 1, 0, 0, 0, 0, 0
EX_JOG_INCR, 0, 0, 1, 0, 0, 0, 0, 0
EX_JOG_INCR, 0, 0, 1, 0, 0, 0, 0, 0
EX_JOG_INCR, 0, 0, 2, 0, 0, 0, 0, 0
EX_JOG_INCR, 0, 0, 2, 0, 0, 0, 0, 0
EX_JOG_INCR, 0, 0, 2, 0, 0, 0, 0, 0
EX_JOG_INCR, 0, 0, 3, 0, 0, 0, 0, 0
EX_JOG_INCR, 0, 0, 3, 0, 0, 0, 0, 0
EX_JOG_INCR, 0, 0, 4, 0, 0, 0, 0, 0
EX_JOG_INCR, 0, 0, 4, 0, 0, 0, 0, 0
EX_JOG_INCR, 0, 0, 4, 0, 0, 0, 0, 0
EX_JOG_INCR, 0, 0, 5, 0, 0, 0, 0, 0
EX_JOG_INCR, 0, 0, 6, 0, 0, 0, 0, 0
EX_JOG_INCR, 0, 0, 6, 0, 0, 0, 0, 0
EX_JOG_INCR, 0, 0, 7, 0, 0, 0, 0, 0
EX_JOG_INCR, 0, 0, 7, 0, 0, 0, 0, 0
EX_JOG_INCR, 0, 0, 8, 0, 0, 0, 0, 0
EX_JOG_INCR, 0, 0, 8, 0, 0, 0, 0, 0
EX_JOG_INCR, 0, 0, 9, 0, 0, 0, 0, 0
EX_JOG_INCR, 0, 0, 10, 0, 0, 0, 0, 0
EX_JOG_INCR, 0, 0, 10, 0, 0, 0, 0, 0
EX_JOG_INCR, 0, 0, 11, 0, 0, 0, 0, 0
EX_JOG_INCR, 0, 0, 11, 0, 0, 0, 0, 0
EX_JOG_INCR, 0, 0, 12, 0, 0, 0, 0, 0
EX_JOG_INCR, 0, 0, 12, 0, 0, 0, 0, 0
EX_JOG_INCR, 0, 0, 13, 0, 0, 0, 0, 0
EX_JOG_INCR, 0, 0, 13, 0, 0, 0, 0, 0
EX_JOG_INCR, 0, 0, 13, 0, 0, 0, 0, 0
EX_JOG_INCR, 0, 0, 14, 0, 0, 0, 0, 0
EX_JOG_INCR, 0, 0, 14, 0, 0, 0, 0, 0
EX_JOG_INCR, 0, 0, 14, 0, 0, 0, 0, 0
EX_JOG_INCR, 0, 0, 15, 0, 0, 0, 0, 0
EX_JOG_INCR, 0, 0, 15, 0, 0, 0, 0, 0
EX_STOP_REQ, 0, 0, 16, 0, 0, 0, 0, 0
EX_NONE , 0, 0, 16, 0, 0, 0, 0, 0
DRO still shows 0.001, instead of 0.002
Jogging again moves Z by .001
Every other jogging move results in no actual movement.
A couple more diagnostic logs with the intermediate lines removed:
...
EX_JOG_INCR, 0, 0, 16, 0, 0, 0, 0, 0
EX_STOP_REQ, 0, 0, 32, 0, 0, 0, 0, 0
------ lines removed
EX_NONE , 0, 0, 16, 0, 0, 0, 0, 0
...
EX_JOG_INCR, 0, 0, 16, 0, 0, 0, 0, 0
------ lines removed
EX_STOP_REQ, 0, 0, 32, 0, 0, 0, 0, 0
EX_NONE , 0, 0, 32, 0, 0, 0, 0, 0
...
Also, setting jog increment to 0.100 inch and jogging Z+ should output 1600 pulses, but outputs only 1599. Then jogging Z- by 0.1 outputs 1600 pulses in reverse direction, so it does not return to zero. Every time jogging Z+ and then Z- leaves the position farther off from zero, so a cumulative error is introduced.
BTW, what does EX_NONE indicate