Electrical requirements/Connection
1. Connect the wires on the RS485 connections X1 and X2 as shown in the circuit diagram. Safe
isolation from dangerous voltages must be ensured outside the device for this control cable.
2. Set the meters used as shown in the table, see Meters with Modbus RTU (RS485) interface. Refer
to the installation instructions provided by the meter manufacturer for this purpose.
Ethernet1 connection X4
The Ethernet1 connection takes the form of a terminal block in LSA+® form. Permanently wired
communication can be enabled using the Ethernet1 connection.
Colour coding
To suit the cabling standard used in the building, the contacts are wired in accordance with
TIA-568A/B for 100BaseT as follows:
Pin -568A
Pair
-568B
Pair
-568A
Colour
-568B
Colour
1 (Tx+) 3 2
White/Green line White/Orange line
2 (Tx−) 3 2
Green/White line
or green
Orange/White line
or orange
3 (Rx+) 2 3
White/Orange line White/Green line
4 (Rx−) 2 3
Orange/White line
or orange
Green/White line
or green
EN
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