Communication Ports
Beijer Electronics, MAEN834A
17
Pin
Function
Pin
Function
1
N/A
14
RS422 TX+ (RS485+)
2
RS232 TXD
15
RS422 TX- (RS485-)
3
RS232 RXD
16
RS422 RX+
4
RS232 RTS
17
RS422 RX-
5
RS232 CTS
18
N/A
6
N/A
19
7
Signal ground
20
8
Optional;
+5V@100mA output
21
9
N/A
22
10
23
RS422 RTS+
11
24
RS422 RTS-
12
RS422 CTS+
25
N/A
13
RS422 CTS-
COM 2
1
10
11
13 12
6
7
9 8
5
2
3
4
14
17
22
25 24 23
20
21
19 18
15
16
