The FL SWITCH 1605 M12 has five front Ethernet ports in M12 format. Only CAT5/CAT6 Ethernet cables with D-coded M12 connectors can be connected to these. The data transmission rate is 10 Mbps or 100 Mbps. In addition, each port has an Autocrossing function at 100 Mbps: It is not necessary to distinguish between 1:1 and crossover Ethernet cables.
Switching properties of FL SWITCH 1605 M12
All data telegrams that are received by the switch are saved and their validity is checked. Invalid or faulty data packets (>1522 bytes or CRC errors) and fragments (<64 bytes) are rejected. Valid data telegrams are forwarded by the switch. The switch always forwards the data using the data transmission speed that is used in the destination network segment.
The switch independently learns the addresses for termination devices, which are connected via a port, by evaluating the source addresses in the data telegrams. Only packets with unknown addresses, with a source address of this port or with a multicast/broadcast address in the destination address field are forwarded via the corresponding port. The switch can store up to 4096 addresses in its address table with an aging time of 40 seconds. This is important when more than one termination device is connected to one or more ports. In this way, several independent subnetworks can be connected to one switch.
- Quality of Service (QoS)
With help from the Quality of Service function, the switch can preferentially process PROFINET traffic. To do so, the switch detects the Ethernet packets by means of QoS priority and forwards on the higher priority Ethernet packets.