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

nResponse code format

When a command has been executed correctly

O

K

 

 

 

Return code

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

(0DH, 0AH)

A response is returned after a command is executed. * If an ID number has been assigned

 

 

 

Space (20H)

 

Return code

 

 

 

 

(0DH, 0AH)

 

 

 

 

 

 

 

 

 

 

O

K

SPC

0

0

1

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

ID number of responding monitor

nCommunication 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.

When connecting multiple monitors in a daisy chain, set the timeout to at least the product of the monitor’s position from the computer multiplied by 10 seconds.

Example) 3rd monitor from computer: 30 seconds or longer.

•Provide an interval of 100 ms or more between the command response and the transmission of the next command.

VOLM0020

When a command has not been executed

ER R Return code (0DH, 0AH)

*If an ID number has been assigned

 

Space (20H)

Return code

 

 

 

 

 

(0DH, 0AH)

 

 

 

 

 

 

 

 

 

 

E

R

R

SPC

0

0

1

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

ID number

TIPS

•“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 no monitor has been assigned the designated ID number (e.g. if the command IDSL0002 is used, but no monitor with ID number: 2 is found), no response is returned.

If execution of the command is taking some time

W

A

I

T

 

 

 

 

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.

No ID number is attached to WAIT response.

•Commands which return WAIT:

1.When repeater control is used

2.When an IDSL or IDLK command is used

3.When one of the following commands is used: RSET,

INPS, ASNC, WIDE, EMAG, EPOS, PXSL, POWR, AGIN, MWIN, MWIP, MWPP, ESTG, EMHV, EPHV,

ESHV, ENLG

When control via RS-232C is locked (to prevent use) using the operation lock function (see page 33)

L

O

C

K

E

D

 

 

 

Return code

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

(0DH, 0AH)

When RS-232C/LAN SELECT is set to LAN

OK

Interval of 100 ms or more

INPS0001

WAIT

OK

TIPS

•When executing ALL RESET, set the timeout period to 30 seconds or longer.

•When turning the power on while the POWER ON DELAY function is in use, set the timeout period to the POWER ON

DELAY period + 10 seconds or longer.

Advanced operation

This section explains commands for daisy chain connection. The basic communication procedure is the same as in the “One-to-one connection with a PC” section.

nID numbers

You can assign a unique ID number to each monitor (see page 25). This allows you to control a particular monitor in a daisy chain of monitors.

You can assign ID numbers either from the menu screen or from the PC using RS-232 cable.

[Example]

ID number: 1 ID number: 2 ID number: 3 ID number: 4

If monitors are connected as shown above, you can execute commands like “Set the volume of the monitor with ID 4 to 20”.

When designating ID numbers for a set of monitors linked in a daisy chain, you should basically avoid any duplication of ID numbers.

ID numbers do not have to be assigned in ascending order starting from the PC. They can also be connected as shown below.

[Example]

ID number: 3 ID number: 2 ID number: 4 ID number: 1

 

U

N

S

E

L

E

C

T

E

D

 

 

 

Return code

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

E 34

 

 

 

 

 

 

 

 

 

 

 

 

 

(0DH, 0AH)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Page 33 Page 35
Page 34
Image 34
Sharp PN-R603, PN-R703 operation manual NCommunication interval, NID numbers
Page 33 Page 35

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