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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
●
PC refers to the controller such as a personal computer.
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".
50
Pin No.
Signal
2
RxD
3
TxD
5
GND
1,4,6 - 9
N/C
Non-synchronous
8 bit
None
1
1
19200 bps
Binary
Type
Operating command
Reference command
Response command
ACK
Function
Receive data
Transmit data
Signal ground
-
D0 D1
D2 D3
D4 D5
Start Bit
Description
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
PC→This unit
This unit→PC
-
-
D6 D7
Stop Bit
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