Issue getting XYYZ gantry to home (using 7i92t with 7i76u)
- SteepLearningCurve
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07 Apr 2026 16:37 #345279
by SteepLearningCurve
Replied by SteepLearningCurve on topic Issue getting XYYZ gantry to home (using 7i92t with 7i76u)
Hi PWC
Thank you for the info, greatly appreciated
I thought I would start with double checking the wiring.
I removed some of the wiring, and rewired it, rather than getting confused messing about with it.
It seems pretty straight forward, up until I get to the gantry wiring.
I have a question about the wiring of these two Y axis gantry motors
I attach a makeshift collage of my best effort to display the motor info, and the motors together in one place, I am sorry that it's a bit messy.
Left side of image is the Y2 gantry motor. Left edge of the photo is the front of the machine.
Right side of photo is the Y1 gantry motor (green tape). Right edge of photo is the front of the machine.
I orientated the motor specification, to the same orientation as each motor.
From motor connector pin 1 to pin 11 . No matter the motor orientation , the order of these molded motor connectors is black, green, red, white
However , given that the motors are physically facing each other, if I were able to stand behind the machine , and be able to see both the motor connectors at the same time,
In my head , I would expect to see the wiring of the connector following the same (color?) order top to bottom (which they are not)
Should I be thinking of these as “top pair” of each motor connector , and “bottom pair” of each motor connector (Irrespective of the data sheet , or color of wire) so that I am always referring to the same physical winding on each side?
This is so confusing to me.
************************
The mesa 7i96u axis TB2 0 through 3 connectors are all the same , all straight, each connector has the same color order
Input Signal on DM566 drivers follows mesa outputs.
For each mesa TB2 connector 0 through 3
Using 0 as an example
Mesa DM566 color
Pin 6 not used
Pin 5 dir (+) -> dir (+) red
Pin4 dir (-) -> dir (-) green
Pin 3 step (+) -> pul (+) black
Pin 2 step (-) -> pul(-) white
Pin 1 not used
Please ignore DM566 output labeled (High Voltage) in Y2 photo because until I understand y1 and y2 wiring its unlikely to be correct , (it currently homes correctly, but still y2 jogs in the opposite direction).
************************
Thank you for the info, greatly appreciated
I thought I would start with double checking the wiring.
I removed some of the wiring, and rewired it, rather than getting confused messing about with it.
It seems pretty straight forward, up until I get to the gantry wiring.
I have a question about the wiring of these two Y axis gantry motors
I attach a makeshift collage of my best effort to display the motor info, and the motors together in one place, I am sorry that it's a bit messy.
Left side of image is the Y2 gantry motor. Left edge of the photo is the front of the machine.
Right side of photo is the Y1 gantry motor (green tape). Right edge of photo is the front of the machine.
I orientated the motor specification, to the same orientation as each motor.
From motor connector pin 1 to pin 11 . No matter the motor orientation , the order of these molded motor connectors is black, green, red, white
However , given that the motors are physically facing each other, if I were able to stand behind the machine , and be able to see both the motor connectors at the same time,
In my head , I would expect to see the wiring of the connector following the same (color?) order top to bottom (which they are not)
Should I be thinking of these as “top pair” of each motor connector , and “bottom pair” of each motor connector (Irrespective of the data sheet , or color of wire) so that I am always referring to the same physical winding on each side?
This is so confusing to me.
************************
The mesa 7i96u axis TB2 0 through 3 connectors are all the same , all straight, each connector has the same color order
Input Signal on DM566 drivers follows mesa outputs.
For each mesa TB2 connector 0 through 3
Using 0 as an example
Mesa DM566 color
Pin 6 not used
Pin 5 dir (+) -> dir (+) red
Pin4 dir (-) -> dir (-) green
Pin 3 step (+) -> pul (+) black
Pin 2 step (-) -> pul(-) white
Pin 1 not used
Please ignore DM566 output labeled (High Voltage) in Y2 photo because until I understand y1 and y2 wiring its unlikely to be correct , (it currently homes correctly, but still y2 jogs in the opposite direction).
************************
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