40
12. Input/Output Functions
12.1 RS232C Output
1. Pin Nos. and Functions
Pin No.
Signal Name
Input/Output
Function & Remarks
1
―
―
―
2 RXD Input
Receiving
data
3 TXD Output
Transmitting
data
4
DTR
Output
HIGH (When balance is powered up)
5 GND
―
Signal ground
6
―
―
―
7
―
―
―
8
―
―
―
9
―
―
―
D-SUB 9-Pin Male Connector: Rear Panel
1
2
3
4
5
6
7
8
9
Caution:
Be sure to disconnect the AC adapter from the power outlet before plugging or unplugging the
connector.