A&D AD-8923-BCD - Rs-232 C Connector; RS-232 C Serial Interface Specifications

15
9 8 7 6
(Va)
(Vs)
SG
TXD R
XD
(CTS)
(RTS) (DSR)
5 4 3 2 1
AD-8923-CC
interior
Inch screw
(#4-40UNC)
To the weighing instrument
5. RS-232C CONNECTOR
5.1. RS-232C serial interface specifications
RS-232C
Transmission system : EIA RS-232C
Transmission form : Asynchronous, bi-directional, half duplex
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 bits : 1 bit or 2 bits
Code : ASCII
Terminator : <CR> or <CR><LF>
Circuit
Connection to the weighing instrument
D-Sub 9-pin male
Pin
No.
Signal
name
Direction Description
1 (Vs) − Used internally
2 RXD Input Receive data
3 TXD Output Transmit data
4 − − N.C.
5 SG − Signal ground
6 (DSR) Input Used internally
7 (RTS) Output Used internally
8 (CTS) Input Used internally
9 (Va) − Used internally
(The AD-8923-BCD is a DTE device. Connect
to a DCE device such as the weighing
instruments, using a straight through cable.)
Note
When the user prepares a cable, do not connect to the pins that are used internally.
0 1 2 3 4 5 6
LSB
MSB
1
0
-5V to -15V
+5V to +15V
RS-232C
Stop bit
Parity bit
Start bit
Data bits