Ge-industrial-solutions AF-600 FP OPCMBTCP Modbus TCP Option Bedienungsanleitung PDF herunterladen (Seite 11)

3.1.4 Topology

The OPCMBTCP features a build-in Ethernet-switch, thus having two Ethernet RJ-45 connectors. This enables the possibility for connecting several Modbus TCP

options in a line topology as an alternative to the typical star-topology.

The two ports are equal, in the sense that they are transparent for the option. If only one connector is used, either port can be used.

Illustration 3.2: Star topology

Illustration 3.3: Line topology

NB!

For line topology please refer to section: “Recommended design rules” In a line topology all drives must be powered, either by mains or by their 24 V DC option

cards, for the build-in switch to work.

Modbus TCP