Controlling the monitor with a pc (rs-232c), Pc connection, Communication conditions – Sharp PN-E802 User Manual

Page 29: Communication procedure, None-to-one connection with a pc, Ndaisy chain connection, Ncommand format

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

You can control this monitor from a PC via RS-232C (COM

port) on the PC.

You can also connect multiple monitors via a daisy chain by

using a PC. By assigning ID numbers to each monitor (see

page 30), you can make input mode selection/adjustment or

can check the status of a specific monitor.

Precautions when the PN-ZB01 (optional) is attached

• To control the monitor via RS-232C, set RS-232C/LAN

SELECT to RS-232C.

• You cannot use RS-232C and LAN control simultaneously.

PC connection


One-to-one connection with a PC

Connect with RS-232 straight cable between the PC’s COM

port (RS-232C connector) and the RS-232C input terminal on

the monitor.

RS-232 straight cable

(commercially available)

To COM port


RS-232C input terminal


Daisy chain connection…

Advanced operation

Connect with RS-232 straight cable between the PC’s COM

port (RS-232C connector) and the RS-232C input terminal on

the first monitor.

Next, connect RS-232 straight cable to the first monitor’s

RS-232C output terminal and to the second monitor’s

RS-232C input terminal. Connect in the same way to the third

and subsequent monitors.

Up to 25 monitors can be connected. (Depending on the

length of the cable used and the surrounding environment.)

To COM port

RS-232 straight cables

(commercially available)


First monitor

Second monitor


input terminal


output terminal

Communication conditions

Set the RS-232C communication settings on the PC to match

the monitor’s communication settings as follows:

Baud rate


Stop bit

1 bit

Data length

8 bits

Flow control


Parity bit


* Set to the same baud rate as the BAUD RATE setting of

SETUP menu. (Initial setting: 38400 bps)

* When connecting multiple monitors in a daisy chain, set all

monitors to the same BAUD RATE.

Communication procedure


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, ?)

Example: VOLM0030


* Be sure to input 4 characters for the parameter. Pad with

spaces (“ ”) if necessary.

(“ ” is a return code (0D


, 0A


or 0D



Wrong : VOLM30

Right : VOLM 30

When inputting a negative value, specify a numerical value in

three digits.

Example: AUTR-005

Do not use spaces for MPOS, DATE, and SC01 through

SC08. Specify parameters using a specified number of


Example: MPOS010097

If a command has “R” listed for “DIRECTION” in the

“RS-232C command table” on page 33, the current value can

be returned by using “?” as the parameter.


VOLM ? ? ? ?

From PC to monitor (How much

is current volume setting?).


From monitor to PC (Current

volume setting: 30).

* If an ID number (see page 30) has been assigned

(For example, ID number = 1).



From PC to monitor.

30 001

From monitor to PC.

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