Communication Port
14
ABB, 1SBC159101M0201
5
Communication Port
COM2 is used to connect the operator terminal to a controller via RS232,
RS422 or RS485. COM2 is a 9-pin female connector.
For connection between the operator terminal and the controller, please see the
controller documentation.
6
LCD Contrast Adjustment
The potentiometer on the back of the operator terminal is used to adjust LCD
Contrast (STN LCD). Use a small screwdriver to turn the potentiometer (clock-
wise = contrast down; counter-clockwise = contrast up).
Note:
Make sure that the connection is in accordance with the setting of the dip switch-
es, for example RS485 corresponds to SW10 = ON. See section
4 Dip Switches
.
Pin
Function
1
RS422 TX+ (RS485+)
2
RS232 RXD
3
RS232 TXD
4
RS422 RX+
5
Signal ground
6
RS422 TX- (RS485-)
7
RS232 RTS
8
RS232 CTS
9
RS422 RX-
