Station Communication Rear Connection; Optical Serial Rear Connection; Eia-485 Serial Rear Connection - ABB RET650 Technical Manual

Section 18
IED physical connections
18.4.2
18.4.3
18.4.4
612
The default IP address of the IED through this port is 10.1.150.3.
The front port supports TCP/IP protocol. A standard Ethernet CAT 5 crossover cable
is used with the front port.

Station communication rear connection

The default IP address of the IED through the Ethernet connection is 192.168.1.10.
The physical connector is X1/LAN1. The interface speed is 100 Mbps for the
100BASE-FX LC alternative.
If the COM03 communication module is used, the X1/LAN1 A should be used. For
redundant kommunication, X1/LAN A and X2/LAN B should be used. LAN2 A is not
used in this product.

Optical serial rear connection

Serial communication can be used via optical connection in star topology. Connector
type is glass (ST connector). Connection's idle state is indicated either with light on or
light off. The physical connector is X9/Rx,Tx.

EIA-485 serial rear connection

The communication module follows the EIA-485 standard and is intended to be used
in multi-point communication.
For the complete list of available connection diagrams, please refer to Section
Connection diagrams.
For four-wire connections, to terminate far end of the RS485 bus with the built-in 120
ohm resistors, connect X8:4 – 11 for Tx and X8:2 – 9 for Rx. This can be set via the
local HMI under Configuration/Communication/Station communication/RS485
port/RS485GEN:1/WireMode = Four-wire.
For two-wire connections, to terminate far end of the RS485 bus with the built-in 120
ohm resistors, connect X8:4 - 11. This can be set via the local HMI under
Configuration/Communication/Station communication/RS485 port/
RS485GEN:1/WireMode = Two-wire.
Configure one of the node on the bus with BIAS (On) in order to set the bus signals on
a defined level and non-floating which makes the bus more robust to disturbances.
This can be set via the local HMI under Configuration/Communication/Station
communication/RS485 port/RS485GEN:1/BIAS = On/Off.
To use the chassis grounds (grounding the cable shield, for example), the cable shield
should be grounded on one end at X8:8 (direct ground) and at the other end at X8:1 (via
capacitor).
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Technical manual