Hi,

I am working on V90 servo Profinet with absolute encoder, S7-1215C PLC. I am using Technology object version 6.0 for servo configuration TIA V15.1. servo drive firmware V1.04.03

In S mode configuration servo homing block mode 7 used(absolute value adjust). initially I done homing that time servo position 0.0. servo working fine but after power off and on position value change. it not come retain. 

RB91

Hmm...in your TO settings please check the encoder configuration. Is the encoder evaluation set to "cyclic absolute"? 

 hi,

PFA, in this cyclic absolute like the option not available. I am using telegram-3.

ah you are right, its a 1200 PLC.

And you do not move the axis for sure while it is switched off (e.g. movement via hand)? Do you have a mutliturn or singleturn absolute encoder?

RB91

ah you are right, its a 1200 PLC.

And you do not move the axis for sure while it is switched off (e.g. movement via hand)? Do you have a mutliturn or singleturn absolute encoder?

 In servo have brake motor and multitrun absolute encoder only. Power off condition motor rotation not possible.