[Cause]
When the robot is the master, the robot checks the status of the DP slave. The DP slave at the address indicated by the number in parentheses has been configured by another DP master. For details, refer to the explanation of “Diag.Master_lock of Station_status_1” in 8.3.1 of “Draft Standard PROFIBUS-DP DIN 19245 Part3”.
[Countermeasure]
Change the settings of the DP slave at the address indicated by the number in parentheses so that it is not configured by another DP master.