Operating instructions

Communication
6.5 Communication via PROFINET
Control Units CU240S
176 Operating Instructions, 10/2007, A5E00766042B AC
6.5.4.1 Read Parameters
Requirements
● The PROFInet IO controller and supervisor have been commissioned and are fully
operational.
● Communication between supervisor, controller and device is operational.
● The supervisor can read and write data sets in conformance with Base mode parameter
access.
Read/write request
For the acyclic communication a read/write request must be send to the drive with RD_REC
(SFB52) and WR_REC (SFB53)
Figure 6-14 Acyclic communication for request and response data block.
The request is to be handled using a request and response data block.