NOTE:
The Rexroth drive has absolute encoders, therefore a battery is necessary to back-up the encoder signals. If the battery is low you will receive an error message.
Exchange the battery, according to the Rexroth manual.
NOTE:
In case the position is lost you need to reset to the reference point, you will find instructions in the Rexroth manual.
![](https://www.canman.ch/wp-content/uploads/2017/04/Screen-Shot-2017-04-26-at-10.27.09-AM.png)
ATTENTION:
Do not switch off the machine when you exchange the battery, otherwise the position gets lost.
![](https://www.canman.ch/wp-content/uploads/2017/04/Screen-Shot-2017-04-26-at-10.28.03-AM.png)