Asus PQ321QE User Manual download pdf (Page 25)

Controlling the Monitor with a PC (RS-232C)

Response code format

When a command has been executed correctly

O K

Return code

(0DH, 0AH)

A response is returned after a command is executed.

When a command has not been executed

R R E

Return code

(0DH, 0AH)

• “ERR” is returned when there is no relevant command or when

the command cannot be used in the current 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).

• “ERR” may be returned when a command cannot be

received correctly due to interference from the surrounding

environment.

Please ensure that the system or software retries the command

if this occurs.

If execution of the command is taking some time

I W T A

Return code

(0DH, 0AH)

When the following commands are used, “WAIT” is returned. In this

case, a value will be returned if you wait a while. Do not send any

command during this period.

• Commands which return WAIT:

When one of the following commands is used:

RSET, INPS, WIDE, POWR, MWIN, MWIP, DPST

When control via RS-232C is locked (to prevent use) using the

operation lock function (See page 23.)

E C D K O L

Return code

(0DH, 0AH)

Communication interval

• After OK or ERR is returned, you must send the following

commands.

To set a timeout for the command response, specify 10 seconds

or longer.

• Provide an interval of 100 ms or more between the command

response and the transmission of the next command.

VOLM0020

INPS0001

WAIT

Interval of 100 ms or more

• When executing ALL RESET, set the timeout period to 30

seconds or longer.

NOTE:

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Asus PQ321QE User Manual Page 25

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