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RS-232C Command Reference
It is possible to remote control the V-40HD from an external device using the RS-232C jack.
Specification of the RS-232C Jack
fig.RS-232C.eps
5
4
3
2
1
9
8
7
6
Communication method
Communication speed
Parity
Data length
Stop bit
Code set
Flow Control
Overview of Commands
A command consists of an ASCII code sequence containing "stx, " three uppercase letters, and a semicolon (";"). The three letters
indicate the command type.
If the command has an argument, a colon (":") is inserted between the command letters and the argument. When multiple
arguments occur, they are separated by commas (", " ).
"stx"
This is the ASCII code signal name (code number 02H [hexadecimal]) and code that signals the command start. Your device's stx
command may not be the ASCII letters "stx" or "02H". Refer to your RS-232C controller's manual to send proper command.
":"
This is the code to separate the command and its argument.
";"
This is the code to make V-800HD recognize the end of a command.
* The codes of stx(02H) & ACK(06H) or Xon(11H) / Xoff(13H) are the control codes.
* If the external device sends multiple commands to the V-800HD sequentially, it must wait for ACK to be returned before sending the next
command.
14
Pin No.
Signal
1
2
3
4
5
6
7
8
9
Synchronous (asynchronous), full-duplex
9600 bps
none
8 bit
1 bit
ASCII
none
DCD
RXD
TXD
DTR
GND
DSR
RTS
CTS
RI
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