ITRON CF Echo2 Manuel D'installation page 7

Installation for a CF Echo2, CF 51, CF 55
The CFEcho2, CF 51, CF 55 meter must be in the mains RF version.
The mains version module must be: OB-MAIN-MOD
Install the mains power supply
Connect the mains power supply Supply the CF
(short cable)
1
2
Install the configured Modbus card
3
Supply the Modbus card (3-colour cable)
Modbus output on the
terminal block
A = D+
B = D-