Contrel EMA90 - 6) Option Rs485 Port (S485)

EMA90 - USER MANUAL
-30-
8.4.6) OPTION RS485 PORT (S485)
With this option the instrument will be equipped with 2 digital inputs, 2 digital outputs and 2 serial
ports.
Personal Computer
Modem
N
L N
S1 S2 S1 S2 S1 S2
I1 I2 I3
L1V
23
4
5689
10
1112 7
1
L2V
L3V
TX
RX
COM
Di1+
Di1-
Di2+ Di2- A
Vaux
Do2-
Do2+
B
CE
Do2-
Do2+
A
B
0V
+5V
Rs485
A
B
0V
+5V
Do1- Do1+