PN-T321/T322B
CONTROLLING THE MONITOR WITH A PC
3 – 1
CHAPTER 3. CONTROLLING THE MONITOR WITH A PC
1. RS-232C
You can control this monitor from a PC via RS-232C (COM port) on the PC.You can also connect multiple monitors via a daisy chain by using a PC.
1 - 1. COMMUNICATION CONDITIONS
Set the RS-232C communication settings on the PC to match the monitor’s communication settings as follows.
1 - 2. COMMUNICATION PROCEDURE (BASIC OPERATION)
■
COMMAND FORMAT
When a command is sent from the PC to the monitor, the monitor oper-
ates according to the received command and sends a response mes-
sage to the PC.
If a command has “R” listed for “DIRECTION” in the “RS-232C com-
mand table”, the current value can be returned by using “?” as the
parameter.
Baud rate
9600bps
Data length
8 bits
Parity bit
None
Stop bit
1 bit
Flow control
None
Return code
Command field
(4 prescribed
alphanumerical characters)
Parameter field
(4 character string comprised of:
0-9, +, -, space, ?)
C1
C2
C3
C4
P1
P2
P3
P4
VOLM0030
VOLM 30
Example
Be sure to input 4 characters for the parameter.
Pad with spaces (" ") if necessary.
(" " is a return code (0D
H
, 0A
H
or 0D
H
))
Wrong : VOLM30 .
Right : VOLM 30 .
VOLM ? ? ? ?
30
Example
From PC to monitor.
(How much is current
volume setting?).
From monitor to PC.
(Current volume
setting: "30").
