How to set current encoder pos to current position while homing by Driver.

I have a problem. (EtherCAT Servo motor  Incremental )

1) while Homing by driver ..
2) begin to move  and then push Emstop.
3) Turn on " Machine Power "
4)  Suddenly servo motor move to the previous position( when I push homing button)  really crazy fast .

I think while homing, Servo driver control the position.

So I believe , While homing, LinuxCNC control position must be set by current servo driver encoder pos.

Please give me a hint to fix this problem.

I'm using ..
LinuxCNC Version 2.9.4
Lichuan LC10E Servo motor (17bit inc) 
CIA402, Custom Homing component
 

I would rather expect joint.N.motor-pos-cmd to re-init to the current encoder feedback value (joint.N.motor-pos-fb) on restart.
Maybe you have a missing HAL connection?
It's probably worth halscoping / halmetering those pins (and others) to see what is happening.

Thanks. I'm almost solving this problem and finalize my project. After that, I'm planning to share my "Lichuan-EtherCAT" project .