A&D BA-T Series, Instruction Manual

Page: 168 / 220

168
15. Interface Specifications (Standard)
RS-232C specifications
Connector D-Sub 9-pin (male)
Transmission system EIA RS-232C
Transmission form Asynchronous, bi-directional, all half duplex
Transmission rate 5 times/second, 10 times/second
Signal format Baud rate 600, 1200, 2400, 4800, 9600, 19200, 38400 bps
Data bits 7 bits or 8 bits
Parity EVEN or ODD .................... At a data bit length of 7 bits
NONE ................................. At a data bit length of 8 bits
Stop bits 1 bit
Code ASCII
1 character format At a data bit length of 7 bits
1 ..... -5 V to -15 V
0 ..... +5 V to +15 V
0 1 2 3 4 5 6 P
LSB MSB
Start bits Parity bits Stop bits
Data bits
D-Sub 9-pin assignments
Pin No.
Signal
name
Direction Description
Inch screw #4-40UNC
RS-232C connector
Display unit (right side)
1 - -
Same potential as
SG
*1
2 TXD Output Transmit data
3 RXD Input Transmit data
4 - - N.C.
5 SG - Signal ground
6 DSR Output Data set ready
7 RTS Input Request to send
8 CTS Output Clear to send
9 - Output 12V output *1
Signal names other than TXD and RXD are names on the DTE side.
Wiring diagram Balance (DCE) Pin No.
(when connected to a TXD 2
personal computer) RXD 3
RTS 7
CTS 8
DSR 6
SG 5
PC (DTE)
RXD
TXD
RTS
CTS
DSR
SG
*1 Used with some A&D peripherals. When connecting to other companies' products such as personal
computers and PLCs, do not connect the wires. Make sure a compatible cable is used, as using the
wrong connection cable may damage the device.
For settings for RS-232C, refer to “ 13.13. RS-232C interface ”.
Display settings: MENU key System settings button Communication button
RS-232C interface button In the [RS-232C interface] screen,
select [Baud rate], [Data bit, parity bit], [Data format].