Rs-232 Interface - WEG PLC300 H3 Guia De Instalacion

Digital Inputs
1 2 3
ENC
ENC ENC
A A B
A B
1KR 1KR
ENC
Figure 3.6: PNP encoder connection with signals A and B

3.6 RS-232 INTERFACE

This non-insulated RS-232 serial interface is intended to point-to-point communication.
1 2 3
ENC ENC ENC ENC
A A B
14 | PLC300
4 5
6 7
ENC ENC ENC ENC
B Z Z +V*
+V*
4 5 7
6
ENC ENC ENC ENC
B Z Z +V* 0 V
RX
TX
Modem
RS232
GND
Figure 3.7: Connecting the RS-232
11
10
8 9
ENC 232 232 232
0 V TX RX GND
0 V
5/12 V
(*)
8 9 10 11
232 232 232
TX RX GND
12
13 14
485 485 485
A B GND
12 13 14
485 485 485
A B
GND