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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).
The command between this unit and the computer consists of “Header”, “Unit ID”, “Command”, “Data” and “End”.
z
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.
Unit ID
This code specifies the unit. The binary code is fixed at “8901”.
RS-232C Specifications
Pin No. Signal Operation Signal Direction
2 RxD Receive data This unit PC
3 TxD Transmit data This unit PC
5 GND Signal ground b
1, 4, 6 b 9N/C bb
zPC refers to the controller such as a personal computer.
Mode Non-synchronous
Character Length 8 bit
Parity None
Start Bit 1
Stop Bit 1
Data Rate 19200 bps
Data Format Binary
Command Format
Binary code Type Description
21 Operating command PC This unit
3F Reference command PC This unit
40 Response command This unit PC
06 ACK
This unit PC
(When the command is accepted without error, it returns to PC)
1
6
5
9
This unit
D6 D7D4 D5D2 D3D0 D1
Start Bit Stop Bit
DLA-RS2_EN.book Page 44 Friday, October 12, 2007 2:43 PM