Controlling the Monitor with a PC RS-232C, Volm

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

You can control this monitor from a PC via RS-232C (COM port) on the PC.

PC connection

Connect the COM port on the PC (RS-232C connector) to the CONTROL terminal (RS-232C input terminal) on the monitor using the RS-232C conversion cable (supplied) and an RS- 232 straight cable (commercially available).

Bind the RS-232C conversion cable with the cable clamp.

CONTROL terminal (RS-232C input terminal)

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

Command field

Parameter field

(4 prescribed

(4 character string comprised of:

alphanumerical characters)

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

To COM port
RS-232 straight cable	RS-232C conversion
(commercially available)	cable (supplied)

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	None

Parity bit	None

*Set to the same baud rate as the BAUD RATE setting of SETUP menu. (Initial setting: 38400 bps)

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

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

Example: OFSR-127

If a command has “R” listed for “Direction” in the “RS-232C command table” on page 26, 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).

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