Downlink ports X01 ... X08
Notice | |
Do not use angled plugs The cable outlet of an angled plug would cover other downlink ports or collide with plugs on the other downlink ports. |
Ports X01 ... X08 are D-coded M12 sockets.
Pin assignment
M12 socket, D-coded | Pin | Function |
|---|---|---|
| 1 | Tx + |
2 | Rx + | |
3 | Tx - | |
4 | Rx - | |
Housing | Shield |
LEDs
There is an LED labeled “L/A” on each downlink port.
Color | Meaning |
|---|---|
Green | Link/Act signal |
Orange | Error: Internal buffer overflow or alignment error |
Ports for increased data throughput
Ports X01 and X05 have a larger data buffer than the other ports. This enables a higher data throughput.
These ports are particularly suitable for connecting EtherCAT segments with many devices (over 100) and/or devices with high data requirements (e.g. devices with analog channels and oversampling).
EtherCAT cable redundancy
If a downlink port of the CU2508-0022 is used as an EtherCAT port, another port can be used as a second EtherCAT port for the purpose of cable redundancy. The configuration is described in the chapter Configuration of two ports for EtherCAT cable redundancy.
Only the following combinations of ports can be used for cable redundancy:
- X01 and X02
- X03 and X04
- X05 and X06
- X07 and X08
Example for EtherCAT port X01 and redundancy port X02:
