Joining two motors

In the ini file there are missing
HOME_SEQUENCE = -2
entries for all joints, -2 should be for both of the tandem joints while X and Z in your case should be 0 and 1 respectively.
In the hal file, delete the ....maxerror......=0.005 lines.

What version of linuxcnc are you using?
It seems there are two things I see that are not quite right in the INI:

KINEMATICS = trivkins coordinates=XYYZ kinstype=BOTH
This allows individual jogging of joints before homing.
drop the 'kinstype=BOTH' to disallow individual joint jogging (so the docs say)

also the there are no home sequence entries for the joints.
the Y and Y2 should have it so they jog together.
J0 HOME_SEQUENCE = 2
J1 HOME_SEQUENCE = -1
J2 HOME_SEQUENCE = -1
J3 HOME_SEQUENCE = 2

I think that would fix things (test carefully)

tommylight wrote: In the ini file there are missing

In the hal file, delete the ....maxerror......=0.005 lines.

On an inch machine, that setting is fine.

cmorley wrote:

tommylight wrote: In the ini file there are missing

In the hal file, delete the ....maxerror......=0.005 lines.

On an inch machine, that setting is fine.

Nice to know, thank you Chris.

I’m using 2.9. Ok thank you. I’m not good at editing the files but I’ll try and let you know when I get home. Thank you

ok here try this -replace your old file with this.