12. Input/Output Functions
12.1 RS232C
Output
12.1.1
Connector pin numbers 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 the balance is powered ON)
5 GND
- Signal
ground
6 - -
-
7 - -
-
8 - -
-
9 - -
-
1
2
3
4
5
6
7
8
9
D-SUB9P Male Connector: Rear Panel
Caution:
Be sure to disconnect the AC adapter from the power outlet before plugging or unplugging the
connector.
42