Download Downloading - Beijer Electronics

MAEN922.book Page 16 Wednesday, November 7, 2007 9:57 AM
Communication Ports
5
Communication Ports
COM1, a 9-pin female connector, is used to connect the operator terminal to a
controller via RS232 or RS485.
COM2, a 25-pin female connector, is used to connect the operator terminal to
a controller via RS232, RS422 or RS485.
COM3, a 9-pin female connector, is used to connect the operator terminal to a
controller via RS422 or RS485.
Note:
Make sure that the connection is in accordance with the setting of the dip switches,
for example RS485 corresponds to SW10 and SW11 = ON. See section 4 Dip Switches.
Pin
Function
Pin
Function
1
RS485+
1
RS422 TX+ (RS485+)
2
RS232 RXD
2
RS422 CTS+
3
RS232 TXD
3
RS422 CTS-
4
N/A
4
RS422 RX+
5
Signal ground
5
Signal ground
6
RS485-
6
RS422 TX- (RS485-)
7
RS232 RTS
7
RS422 RTS+
8
RS232 CTS
8
RS422 RTS-
9
Optional;
+5V@100mA output
9
RS422 RX-
16
Beijer Electronics, MAEN922