Specifications

14. RS-232C Serial Interface

The balance is a Data Communication Equipment (DCE) device. Connect the balance to a personal

computer (DTE) using a straight through cable.

Transmission system : EIA RS-232C (D-Sub 9-pin, female connector)

Transmission form : Asynchronous, bi-directional, half duplex

Transmission rate : Approx. 10 or 5 times/second (same as data refresh rate)

Data format : Baud rate : 600, 1200, 2400, 4800, 9600, 19200 bps

Data bits : 7 or 8 bits

Parity : Even, Odd (Data bits 7 bits)

None (Data bits 8 bits)

Stop bit : 1 bit

Code : ASCII

D-Sub 9-Pin Assignments

Pin No. Signal name Direction Description

1 - - No connection

2 TXD Output Transmit data

3 RXD Input Receive data

4 - - No connection

5 SG - Signal ground

6 DSR Output Data set ready

7 RTS Input Request to send

8 CTS Output Clear to send

9 - - No connection

Signal names of the balance side are the same as the

DTE side with TXD and RXD reversed.

54321

9876

#4-40UN

RS-232C

1 -5 V to -15 V

0 +5 V to +15 V

Data bits Stop bit

Start bit Parity bit