Dear all,

I have a problem with actual servo position after turn of and turn on volteage. I have absolut enocder and as I know postion should be remeber. I homed axis in 0.0 position and when I turn of voltege and turn on again I recieved actual position -110.0. 

This axis is programed using TO object and before I tested active homing and I put this value to offset. But now is 0.0.

Do you have any idea where is the problem or what I have to do to get the same postion after turn off/on voltage?

In axis area I have no additional sensor to homing axis, so before start I will go to correct position by jog mode and I homed axis using axis control panel.

And another question. Do you know what is the best way to home absolut encoder axis using mc_home without physical sensors? 

TiaPortal V18
Technology object - positioning axis
S120 CU310 - motor 1FK7034-xAK71-xRGx

Thank you

Hi,

I know this FAQ for this behaviour:

Why is the absolute value encoder adjustment no longer correct after switching the S7-1200 / S7-1500 on again?

Regards,

Towome