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Communication procedure
Basic operation
<Command 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
Command field
(4 prescribed
alphanumerical
characters)
Parameter field
(4 character string
comprised of:
0-9, +, –, space, ?)
Carriage return code
C2 C3 C4 P1 P2 P3 P4 ↵
O
Carriage return code
(0D
H, 0AH)
K ↵
Example: VOLM0030
POWR
1 (“ ” indicates a space.)
* Be sure to input 4 characters for the parameter. Pad with spaces if necessary.
× VOLM30
⅙ VOLM 30( )(“ ” indicates a space, “ ” is the carriage return code
(0D
H, 0AH or 0DH).)
If a command has “R” listed for “Direction” in the “RS-232C Command table” on page 46, the cur-
rent value can be returned by using “?” as the parameter.
Example: 1If an ID number has not been set:
VOLM???? ←From PC to monitor (current volume setting: ?)
30 ←From monitor to PC (current volume setting: 30)
2If an ID number has been assigned (For example, ID number = 001)
VOLM
? ←PC to monitor (“ ” indicates a space)
30
001 ←Monitor to PC (“ ” indicates a space)
<Response code format>
■ When a command has been executed correctly
This is returned when execution of the command is
finished.
■ When a command has not
been executed correctly*
E
Carriage return code
(0D
H
, 0A
H
)
R R ↵
* This is returned when there is no such command,
or when the command cannot be used in the
current state of the monitor (i.e. video auto-adjust-
ment with video display).
* If there is a bad connection between the PC and
monitor, or if communication has not been estab-
lished, nothing is returned (not even ERR).
■ If execution of the command is
taking some time
W
Carriage return
code (0D
H, 0AH)
A I T ↵
If a command takes some time to execute, WAIT may
be returned as the return value. Wait for a moment, and
OK or ERR will be returned. New commands cannot be
received during this time, even if they are sent.
PC Operation (Continued)
■ If RS-232C is locked
If RS-232C control has been locked with Control lock
(see page 54), LOCKED is returned as the returned
value.
L
Carriage return code
(0D
H, 0AH)
K E DOC ↵