Z probe communication error

[NormL1]

I have searched for this on the forums and haven't found an answer, so, if I am blind in both eyes, I apologize.

Whenever I try one of the calibration scripts, v3probing or the one on the forums by the same name, I get a z-axis communications error. I get the error at the same juncture every time. It will probe the surface near each axis without issue, re-center on top and then come down and probe the center and that is when the error comes.

I asked SeeMeCNC and they said it was a lose connection. I looked at the Z end stop switch and nothing lose, but, I re-seated them anyway. I looked at the Rambo board and the connections are solid. I traced the wires and they are not compromised. This error first appeared two weeks after the build and after numerous uses.

Any ideas where to look?

[mhackney]

The connector on the HE280 (the 8 pin connector with the push in wires) is the likely suspect.

[NormL1]

Thanks, I will start some conductivity tests.

[mhackney]

It is likely intermittent. The cable flex as the nozzle lowers could cause a momentary open circuit. You might just have to reseat everything and make sure the connector is well seated and test.

[NormL1]

I did that immediately and still got the error, which is why I was going to switch to conductivity. Your point is valid though, so, maybe I need to forum search for strain relief