I got the information on the Event Log:
IO Access Error
The signal given in parameter Signal is not write protected for user access from teach pendant or Rapid.
Actions
Change the access mode to system type for the signal in the I/O configuration.
The problem is, i dont see this option access mode to system type.
You are probably defining/using an input for some safetyfeature or something, maybe worldzones. If it would be possible to edit the value by hand or from the rapid things could go wrong.
For this the I/O must be set to acces level “read only” in the I/O signal definenition.
To do this go to:
control panel
Configuration
I/O
Signals
Select the signal in question and edit the acces level to “Read Only”
Putting ReadOnly solved the problem, but in other robot this signal is with access INTERNAL.