P300iA Zero position problem

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Dear Ernesto!

You've observed it right, the possible causes can be:

1. Low voltage of the memory back up battery,
2. Unusual external start signal.
3. Incorrect parameter

You can go with below remedies respectively:

1. Replace the battery.
2. Investigate the cause
3. Revise parameters.

I am sure now you can probe the cause. 

Good luck!

Hello Ernesto!

Is your robot changing it's position when you power on the robot or under the power off condition? 

You should note:

• the robots doesn't start the servos automatically after power on. So if your robot doesn't have brakes on every axis there is nothing to hold the position before servos are on;
• if the position changes while the servos are off, the robot doesn't go back automatically after power on and servos on just when the program reach to "go to zero position " line (if the program contains such a command) .