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.
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
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)
■
Unit ID
This code specifies the unit. The binary code is fixed at
“
8901
”
.
RS-232C Specifications
Pin No.
Signal
Function
Signal Direction
2
RxD
Receive data
PC→This unit
3
TxD
Transmit data
This unit→PC
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 D7
D4 D5
D2 D3
D0 D1
