Communication between the Control Unit of the drive and the programming device (PG) or PC can be established via a serial interface, via PROFIBUS or PROFINET.

Option L91 "Commissioning interface cabinet door access" allows commissioning and diagnostics to be especially simply and reliably performed. With this option, the PROFIBUS interface is integrated in the cabinet door. This means that when the cabinet door is closed, a PROFIBUS connection can be established with the PG directly at the drive cabinet. A PROFIBUS communication module and a connecting cable for the PC are required to establish communication between a PG/PC and a CUD (for ordering data, refer to accessories).