SINAMICS S200 PN Acyclic communication with SIMATIC S7-1200/1500

Siemens S7-1200 / 1500 PROFINET IO controller can read and write the parameters of SINAMICS S200 PN drive by acyclic data exchange via PROFINET communication protocol. The controller can read or write single parameter or multiple parameters.

The acyclic data exchange mode allows the following task:

• Exchange large “user data”.
• By using the PLC function blocks READ and WRITE the user can exchange the data.

The transferred data block structure should follow the DS47 data structure. The acyclic data exchange between S7-1500 CPU and V90 PN drive should use the system block “WRREC” and “RDREC”.

The quantity of the read or write parameter is not restricted. But the maximum data length is 240 bytes for each read or write job.

The “WRREC” block sends the request command to the V90 PN drive.

The “RDREC” sends the response back to PLC.