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 33), you can make input mode selection/adjustment or can check the status of a specific monitor.

TIPS

To control the monitor via RS-232C, set STANDBY MODE to STANDARD.

Communication conditions

Set the RS-232C communication settings on the PC to match the monitor’s communication settings as follows:

Baud rate

9600bps

 

Stop bit

1 bit

 

 

 

 

 

Data length

8 bits

 

Flow control

None

 

 

 

 

 

Parity bit

None

 

 

 

 

 

 

 

 

PC connection

nOne-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-232C input terminal

PC

To COM port

RS-232 straight cable (commercially available)

nDaisy chain connection… Advanced operation

PN-Y555/PN-Y475/PN-Y425/PN-Y325 monitors can be connected together in a daisy chain connection.

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.)

 

RS-232C

 

 

 

PC

First monitor

input terminal

To COM port

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

RS-232C

RS-232 straight cables

output terminal

(commercially available)

Second monitor

 

Communication procedure

nCommand 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 comprised of:

alphanumerical characters)

 

0-9, +, -, space, ?)

Example: VOLM0030

VOLM 30

*Be sure to input 4 characters for the parameter. Pad with spaces (“ ”) if necessary.

(“ ” is a return code (0DH, 0AH or 0DH))

Wrong : VOLM30

Right : VOLM

30

Do not use spaces for DATE. Specify parameters using a specified number of characters.

If a command has “R” listed for “DIRECTION” in the “RS-232C command table” on page 36, the current value can be returned by using “?” as the parameter.

Example:

VOLM ? ? ? ?

From PC to monitor (How much

 

 

is current volume setting?).

30

From monitor to PC (Current

 

 

volume setting: 30).

*If an ID number (see page 33) has been assigned

(For example, ID number = 1).

VOLM

?

From PC to monitor.

30 001

From monitor to PC.

E32

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Sharp PN-Y425 Controlling the Monitor with a PC RS-232C, Communication conditions, PC connection, Communication procedure

PN-Y425, PN-Y475, PN-Y555 specifications

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