Sharp PN-655U User Manual Page 41

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ENGLISH
39
E
Example: VOLM0030
VOLM 30 (“ indicates a space.)
* Be sure to input 4 characters for the parameter. Pad with spaces if necessary.
Wrong: VOLM30
Right: VOLM 30 (“ indicates a space. is the 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: 1. If an ID number has not been set:
VOLM???? From PC to monitor (How much is current volume setting?)
30 From monitor to PC (Current volume setting: 30)
2. If an ID number has been assigned (For example, ID number = 1)
VOLM ? From PC to monitor (“ indicates a space.)
30 001 From 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*
* This is returned when there is no such command, or
when the command cannot be used in the current
state of the monitor (Example: When
ADJUSTMENT” is used (a command which is
effective when the input mode is “ANALOG”), while
video is displayed (the input mode is “VIDEO”)).
* If there is a bad connection between the PC and
monitor, or if communication has not been
established, nothing is returned (not even ERR).
If execution of the command is taking some time
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.
If RS-232C is locked
If RS-232C control has been locked with the
operation lock (see page 26), LOCKED is returned
as the returned value.
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 C2 C3 C4 P1 P2 P3 P4
Return code
Command field
(4 prescribed
alphanumerical
characters)
Parameter field
(4 character string
comprised of:
0-9, +, space, ?)
OK
Return code
(0D
H
, 0A
H
)
RRE
Return cod
e
(0DH, 0AH)
IWTA
Return code
(0DH, 0AH)
ECDKOL
Return code (0D
H
, 0A
H
)
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