5i25 - Using Encoder on Axis

I'm having a problem with the Zaxis drifting in the + direction.. I've tried to figure it out but have come up empty handed so far. I added an encoder to it this evening but when i ran pncconf and configured the encoder input for the Z axis linxucnc will not start giving me this error (see attached pic). Also attached is my config folder for the working configuration (without encoder), i forgot to grab the new config with encoder . What can i add to my working config so it uses the encoder on the Zaxis? Also does it matter where you ground the encoder? I see TB3 has +5v and GND for encoder but evidently from what i'm told you need at least 7v for this encoder to work so i tied it into my 12v source grounding it there. Will it still function this way?

Thank you!!
Jake

Pic didn't attach..

It is telling you that you are trying to connect two ouput pins to one signal and you cannot do this.

Comment out the line in your hal file that connects the feedback signal to the stepgen output and try again.

I tried that. Linuxcnc starts now but when I try to jog the z axis I get no movement and following error.

Please provide your new config with the encoder connected.

Here is the new config

It did seem to function while testing in pncconf. It would jog. But for some reason the encoder a input is not responding.it stays true even though I've verified it is switching at the input pin(physical). The b channel does alternate between true and false when turning the encoder. But I guess that is a whole other issue there.

I am going to go back to the beginning post.

You are using a stepper motor to drive the Z axis. Is this correct?

What do you mean that the axis is drifting in the +Z direction? Does that mean that the tool moves upward when it should be stationary? Does that mean that you perform a move and the tool does not return to the original zero (missed steps)?

I am asking this to determine if what you are trying to do is a good approach or not.

Sorry I should have been more clear. The z axis is driven via stepper motor. Running gcode with allot of fast z axis movement causes it to drift up as it goes until its not even cutting the material Any more.I've ruled out collect slip and Mr mechanical issues.

When you return to zero it is off by some amount usually linearlinear to run time

Figured out the encoder problem. I neglected to change the jumpers to TTL mode.. still not sure about the stepper not working. I noticed my slave Y axis is not working either.

The z jogs fine in pncconf and the encoder is working.