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Overview
S1 S2 communication speed setting
switch
Output RS 485 Modbus D+
D on the CF 800 terminal block
D+ or A
D –or B
Power supply connector
(To the CF power supply (2 wires)
Configuring the CF meter
The CF meter must have the following Mbus parameters:
Communication speed = 2400 bauds, Mbus primary address = Required Modbus address (1- 247)
(Adjustable by pushbutton on the CF)
Default Mbus frame configured on frame 00= Challenger frame (Adjustable with the CFCS software and the optical connector)
To configure these parameters and microswitches, disconnect the Modbus card from power supply. Parameters are only
updated during power up.
Level 2 display Mbus speed
Configuring the Mbus card
Adjust Modbus communication speed with the micro switches.
The Modbus card address is the value of the Mbus primary address of meter 1-247
R 120 ohm S4 =1
Sales references
62790 00006
6203001106
Modbus card for CF51/55 and CF Echo2 (Output on terminal block)
Specific mains power supply for CF51/55 and CF Echo2 equipped with a Modbus card
Connection to the CF
S4 termination resistance
Only one 120 ohms resistance must be placed on
the RS485 loop
Level 2 display Mbus address
Modbus communication speed
2400 bd
4800 bd
9600 bd
19200 bd
S1
S2
1
1
0
1
1
0
0
0
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