PC Operation (Continued)

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.

 

 

 

 

Carriage return code

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

C1

C2

C3

 

C4

P1

 

P2

 

P3

 

P4

↵

 

 

Command field

 

 

Parameter field

 

 

 

 

(4 prescribed

 

(4 character string

 

 

 

alphanumerical

 

comprised of:

 

 

 

 

 

characters)

 

0-9, +, –, space, ?)

 

 

Example: VOLM0030

POWR1 (“” indicates a space.)

*Be sure to input 4 characters for the parameter. Pad with spaces if necessary. ⋅ VOLM30

￿VOLM30() (“” 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)

30001 ←Monitor to PC (“” indicates a space)

<Response code format>

■When a command has been executed correctly

Carriage return code (0DH, 0AH)

O K ↵

■When a command has not been executed correctly*

Carriage return code (0DH, 0AH)

E R R ↵

This is returned when execution of the command is finished.

*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

 

Carriage return

 

 

 

 

 

code (0DH, 0AH)

W

A

I

 

T

↵

 

■If RS-232C is locked

Carriage return code (0DH, 0AH)

L O C K E D ↵

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 control has been locked with Control lock (see page 54), LOCKED is returned as the returned value.

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