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.

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

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).)

 

 

 

 

 

 

ENGLISH

When inputting a negative value, specify a numerical value in three digits.

Example: AUTR-009

To use the six-digit command (MPOS), use a six-digit numerical value without spaces in between.

Example: MPOS010097

If a command has “R” listed for “DIRECTION” in the “RS-232C command table” on page 44, 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

 

 

 

 

 

 

Return code

This is returned when execution of the command is

 

 

 

 

 

 

(0DH, 0AH)

finished.

 

O

K

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

When a command has not been executed correctly*

 

 

 

 

 

 

 

 

 

Return code

* This is returned when there is no such command, or

 

 

 

 

 

 

 

 

 

(0DH, 0AH)

when the command cannot be used in the current

 

E

R

R

 

 

 

 

 

 

 

 

state of the monitor .

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

* If communication has not been established for

 

 

 

 

 

 

 

 

 

 

reasons such as a bad connection between the PC

 

 

 

 

 

 

 

 

 

 

and monitor, nothing is returned (not even ERR).

If execution of the command is taking some time

 

 

 

 

 

 

 

Return code

 

 

 

 

 

 

 

(0DH, 0AH)

W

A

I

T

 

 

 

 

 

 

 

 

 

 

 

 

 

 

If RS-232C is locked

Return code (0DH, 0AH)

L O C K E D

With some commands, “WAIT” is returned as a 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 the

 

operation lock (see page 34), LOCKED is returned

37 E

as the returned value.