50
16.
Communication Specifications
16.1.
RS-232C Interface
Bidirectional communication with RS-232C is available.
A communication cable is required for connecting to DTE (Data Terminal Equipment) such as a PC,
external device, etc.
AX-KO2466-200 (2m) / AX-KO2466-500 (5m)
Connector form
D-Sub 9 pin (male)
Transmission method
Conforms to EIA RS-232C
Transmission form
Asynchronous, bidirectional
Signal form
Baud rate
2400, 4800, 9600 bps
Data bits
7 bits or 8 bits
Parity
EVEN, ODD (Data bits: 7 bits)
NONE
(Data bits: 8 bits)
Stop bit
1 bit
Code
ASCII
Format for one character (when the data bits are 7 bits)
Pin layout
Pin No.
Signal
name
Direction
Meaning,
remarks
1
–
–
N.C.
2
TXD
Output Transmit data
3
RXD
Input
Receive 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
–
7V output*
Other than TXD and RXD are the names on DTE side.
*For use with some A&D products.
Do not connect the cables to other manufacturers’ products such as a PC and PLC.
Using the wrong connection cable may damage the device. Be sure to check the compatible cable.
0
1
2
3
5
4
6
P
Sp
St
LSB
MSB
Start bit
Data bits
Parity bit
1 –5V to –15V
0 +5V to +15V
Stop bit
インチネジ
#4-40UNC
6 7 8 9
1 2 3 4 5
RS-232C terminal
Inch screw
外部機器側
(
DTE
)
はかり側
(
DCE
)
はかりの内部
外部機器側
端子例
RXD
TXD
RTS
CTS
DSR
SG
2
3
7
8
6
5
TXD
RXD
RTS
CTS
DSR
SG
Scale side
(DCE)
Device side
(DTE)
Inside of scale
Terminal
example for
device side