[Al_The_Man]

Normally the motor moves until the switch is seen and then goes into slow until the encoder marker is seen and then registers this as zero.
Does your motor slow down at the home switch, or appear to look for the marker?
Al.

[jmccracken]

Al,

No to both of your questions. Without my extension cable, upon seeing the signal from the home switch, it will behave as you describe finding its zero without trouble. However, with the extension cable, it simply ignores the home switch signal. In other words, I've verified that the switch (normally open, so that upon the switch being made, the input as measured at the controller goes to +24V) when made, the motor does not slow or behave any differently.

Again, without the extension cable, it behaves correctly.

Thus, to your point, I assumed that it may not be seeing the reference pulse from the encoder (pins 7 & 8), but I don't see it slow appreciably at all upon the limit / home switch being actuated.

Thanks!