Port Submodule

Port-specific settings can be made on the ‘Properties’ tab. The menu of possible settings always depends on the RTClass employed.

In addition some port properties can be read out.

The information here is subdivided into local port information and remote port properties. I.e. the LLDP protocol (IEEE Std 802.1AB) is prescribed in PROFINET from Conformance Class A (CCA). The devices exchange neighbourhood IDs via this protocol, so that each port is known to its neighbor. Furthermore, the Simple Network Management Protocol (SNMP) can be used as an aid at this point. On opening the ‘Port Diagnosis’ tab, TwinCAT acts as a Network Management Station (NMS) and collects the required device information via SNMP. In the above illustration, for example, it can be seen that the local Port 1 of the BK9053 is connected to Port 2 of the BK9103. For correct topology recognition it is important that only devices are present in the strand that also support the LLDP protocol (this is also applies to switches!).