6
Others
52
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).
PC refers to the controller such as a personal computer.
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 Type Description
21 Operating command
3F Reference command
40 Response command
06 ACK
(When the command is accepted without error, it returns to
PC)
Unit ID
“8901”.
Pin No. Signal Function Signal Direction
2 RxD Receive data
3 TxD Transmit data
5 GND Signal ground -
1,4,6 - 9 N/C - -
Mode
Non-synchronous
Character Length
8 bit
Parity
None
Start Bit
1
Stop Bit
1
Data rate
19200 bps
Data format
Binary
This unit
Start Bit Stop Bit
D6 D7D4 D5D2 D3D0 D1
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