Auto-init problems with teach pendant 3PE

Hello,

I have a problem with the auto-init via PLC.

After restarting the robot controller, the auto-init is not working.
After I switch the operation mode from remote control to normal auto mode, and back to remote control and trigger the auti-init again, it’s working.

I have this problem only with the teach pendant 3PE, the robot controller with the normal teach pendant is working without any problems like this.

To trigger the auto-init, i created a bit in the bit register of the PN interface. And made the auto-init settings with this bit in the installation of the robot.

What could be the reason why this function is not working after restarting the controller, with connected teach pendant 3PE?