Controlling The Monitor With A Pc; Pc Connection; Communication Conditions; Communication Procedure - Sharp PN-425 Operation Manual

Controlling the Monitor with a PC

You can control this monitor from a PC via RS-232C (COM
port) on the PC.

PC connection

Connect with RS-232 straight cable between the PC's COM
port (RS-232C connector) and the RS-232C input terminal on
the monitor.
RS-232C input terminal
RS-232 straight cable
(commercially available)

Communication conditions

Set the RS-232C communication settings on the PC to match
the monitor's communication settings as follows:
Baud rate 9600 bps
Data length 8 bits
Parity bit None
12
E
PC
To COM port
Stop bit 1 bit
Flow control None

Communication procedure

nCommand format
When a command is sent from the PC to the monitor, the
monitor operates according to the received command and
sends a response message to the PC.
C1 C2 C3 C4
Command field
(4 prescribed
alphanumerical characters)
Example: VOLM0030
VOLM 30
* Be sure to input 4 characters for the parameter. Pad with
spaces (" ") if necessary.
(" " is a return code (0D
Wrong : VOLM30
Right : VOLM 30
When inputting a negative value, specify a numerical value in
3 digits.
Example: AUTR-009
Do not use spaces for MPOS. Specify parameters using 6
numerical characters.
Example: MPOS010097
If a command has "R" listed for "Direction" in the
"RS-232C command table" on page 14, the current value can
be returned by using "?" as the parameter.
Example:
VOLM ? ? ? ?
←
30
←
* If an ID number (see page 7) has been assigned
(For example, ID number = 1).
VOLM ?
←
30 001
←
Return code
P1 P2 P3 P4
Parameter field
(4 character string comprised of:
0-9, +, -, space, ?)
, 0A or 0D ))
H H H
From PC to monitor (How much
is current volume setting?).
From monitor to PC (Current
volume setting: 30).
From PC to monitor.
From monitor to PC.