Hi pavlovand,

here is an excerpt from the manual:

DP/DP Coupler is used to interconnect two PROFIBUS DP networks in order to enable the transfer of data between the master of both networks.

This means for 5 masters, you would need 10 couplers to enable data transfer between all masters. Or as shown in your illustration, with 4 couplers you will enable master #1 and #3 to #5 a data transfer with master #2.

Kind regards
Stefan

Hi pavlovand

if the aim is for Master 1 to communicate with 4 other Masters via DP/DP couplers, you need 4 DP/DP couplers.

Your sketch was almost correct and attached is a revised version that will allow this.