Joining two motors

Since when does pncconf do dual motor gantries?

Cant say for sure since i do not use it very often, but at least 6 months that i know of.

I will be putting the limit switches on today. I see numbers, and I’ll have to post my config files in a couple hours. I’m not with my machine now

Aldenflorio wrote: I will be putting the limit switches on today. I see numbers, and I’ll have to post my config files in a couple hours. I’m not with my machine now

Its the homing switches that are needed for dual axis but they can also be used as combined home and limit and then setup soft limits.

linuxcnc.org/docs/2.8/html/config/ini-homing.html

A long time, though I havent got real world tested feedback much.

It's still a configuration problem, as you should't be able to single joint jog a dual axis machine by default.

cmorley wrote: A long time, though I havent got real world tested feedback much.

No feedback = good !

sorry for the late reply it took longer then i though it would. here are my configuration files. i think

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)