ScreenMaster RVG200
Paperless recorder
3 Installation
22
OI/RVG200-EN
Fig. 3.10 4-wire connection
8
9
10
11
12
13
Terminal block E
Host computer
COM
GND
1.8 k
pull-up resistor
1.8 k
pull-down resistor
Tx +
Tx –
Rx +
Rx –
0 V
+5 V
'B'
'B'
'A'
'A'
GND
1.8 k
pull-down resistor
0 V
1.8 k
pull-up resistor
+5 V