MR ETOS ED - Page 74

6 Mounting
Maschinenfabrik Reinhausen GmbH 202074 6385142/08 ENETOS
®
ED
▪ The CPU assembly contains a terminating resistor (120Ω) at the COM2
interface. Install another terminating resistor (120Ω, 0.5W) at the other
end of the bus.
▪ The CPU assembly contains a pull-up resistor and a pull-down resistor
(each of 680Ω in accordance with the Modbus specification). No addi-
tional pull-up/pull-down resistors are needed.
CPU-COM2
Sensor 1
Sensor x
D0 (A)
D1 (B)
Com. (C)
1
2
3
4
5
6
7
8
9
D0 (A)
D1 (B)
Com. (C)
D0 (A)
D1 (B)
Com. (C)
120 Ω
Figure55: MR sensor bus