6
RS-232C Interface
Control of this unit via a computer is possible by connecting the computer to this unit with a RS-232C cross
cable (D-Sub 9 pin).
RS-232C Specifications
This unit
1
5
9
6
Mode
Character Length
Parity
Start Bit
Stop Bit
Data Rate
Data Format
Command Format
The command between this unit and the computer consists of "Header", "Unit ID", "Command", "Data" and "End".
Header (1 byte), Unit ID (2 bytes), Command (2 bytes), Data (n bytes), End (1 byte)
Header
This binary code indicates the start of communication.
Binary code
21
3F
40
06
Unit ID
This code specifies the unit. The binary code is fixed at "8901".
44
Others
Pin No.
2
3
5
1, 4, 6 b 9
PC refers to the controller such as a personal computer.
Non-synchronous
8 bit
None
1
1
19200 bps
Binary
Type
Operating command
Reference command
Response command
ACK
Signal
Operation
RxD
Receive data
TxD
Transmit data
GND
Signal ground
N/C
b
D0 D1
Start Bit
PC
This unit
PC
This unit
This unit
PC
This unit
PC
(When the command is accepted without error, it returns to PC)
Signal Direction
This unit
This unit
b
b
D2 D3
D4 D5
D6 D7
Stop Bit
Description
PC
PC