Sharp LC-M3700 LC-M3700 Operation Manual - Page 39

Communication procedure - code

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PC Operation (Continued) Communication procedure Basic operation 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. Carriage return code C1 C2 C3 C4 P1 P2 P3 P4 ↵ Command field (4 prescribed alphanumerical characters) Parameter field (4 character string comprised of: 0-9, +, -, space, ?) 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 (0DH, 0AH or 0DH).) If a command has "R" listed for "Direction" in the "RS-232C Command table" on page 46, the current 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) I When a command has been executed correctly Carriage return code (0DH, 0AH) OK↵ This is returned when execution of the command is finished. I When a command has not been executed correctly* Carriage return code (0DH, 0AH) ERR↵ * 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-adjustment with video display). * If there is a bad connection between the PC and monitor, or if communication has not been established, nothing is returned (not even ERR). I If execution of the command is taking some time Carriage return code (0DH, 0AH) WA 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. I If RS-232C is locked Carriage return code (0DH, 0AH) L OC K E D ↵ If RS-232C control has been locked with Control lock (see page 54), LOCKED is returned as the returned value. US 38

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US
38
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
, 0A
H
)
K
↵
Example:
VOLM0030
POWR
1
(
“
”
indicates a space.)
*
Be sure to input 4 characters for the parameter. Pad with spaces if necessary.
×
VOLM30
±
VOLM
30(
)(
“
”
indicates a space,
“
”
is the carriage return code
(0D
H
, 0A
H
or 0D
H
).)
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:
1
If an ID number has not been set:
VOLM????
←
From PC to monitor (current volume setting: ?)
30
←
From monitor to PC (current volume setting: 30)
2
If 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
, 0A
H
)
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
, 0A
H
)
K
E
D
O
C
↵