Hvw-03C, Rs-232C Interface - A&D HV-C Series Instruction Manual

16.3. HVW-03C, RS-232C Interface

The HVW-03C enables duplex communication using the RS-232C interface.
The DCE (Data Communication Equipment) connector is type DSUB-9P.
To connect the HVW-03C to an external device, it is necessary to use a commercially available
communication cable.
AX-KO2466-200 (2 m) / AX-KO2466-500 (5 m) / AX-KO2466-1000 (10 m)
When confirming the communication format, refer to "16.5. Communication format".
Pin assignment
Pin No. Signal name of DCE side Direction
1
2
3
4
5
6
7
8
9
Inside of the scale
DCE side
Transmission
Transmission form
Data format
Bit format for data 7 bits
LSB
0
Start bit
Bit format for data 8 bits
LSB
0
Start bit
TXD
RXD
GND
DSR
RTS
CTS
TXD 2
RXD 3
RTS 7
CTS 8
DSR 6
GND 5
EIA RS-232C
Asynchronous, bi-directional
2400, 4800, 9600 bps
Baud rate :
Data length : 7 bits or 8 bits
1 bit
Parity :
1 bit
Start bit :
1 bit
Stop bit :
Code : ASCII
1 2 3 4
Data bits
1 2 3 4
Data bits
Description
No connection
Transmit data
Receive data
No connection
Signal ground
Data set ready
Request to send
Clear to send
Used internally
Terminal example of
RXD
the external device
TXD
DTE side
RTS
CTS
DSR
GND
EVEN, ODD
NONE (Non-parity)
MSB
5 6
Parity
MSB
5 6 7
Page 62
Inch screw
#4-40UNC
Data length is 7 bits
Data length is 8 bits
1 ( -15 V to -5 V )
LSB
0
0 ( 5 V to 15 V )
Stop bit
1 ( -15 V to -5 V )
LSB
0
0 ( 5 V to 15 V )
Stop bit
HV/HW-C/CP Series