ABB REF615 G - COM0023 Jumper Locations and Connections

13.3.8.2 COM0023 jumper locations and connections
The optional communication module supports EIA-232/EIA-485 serial
communication (X6 connector), EIA-485 serial communication (X5 connector) and
optical ST serial communication (X12 connector).
Two independent communication ports are supported. The two 2-wire-ports are
called COM1 and COM2. Alternatively, if only one 4-wire-port is configured, the
port is called COM2. The fibre-optic ST connection uses the COM1 port.
Table 673: Configuration options of the two independent communication ports
COM1 connector X6 COM2 connector X5 or X12
EIA-232 Optical ST (X12)
EIA-485 2-wire EIA-485 2-wire (X5)
EIA-485 4-wire EIA-485 4-wire (X5)
Section 13 1YHT530004D05 D
IED physical connections
858 615 series
Technical Manual