4. Communication Format

Header

Message

Check Code

Delimiter

The command packet consists of four parts, Header, Message, Check code and Delimiter.

Recommended sequence of a typical procedure to control a monitor is as follows, [A controller and a monitor, two-way communication composition figure]

■ For the general command (see the part "6.3. Operation Code (OP code) Table”)

Controller

Get Parameter

Header

Message

Check Code

Delimiter

Get Parameter Reply

Monitor

The controller sends command to get a value from the monitor that you want to change.

Header Message

Check Code

Delimiter

The monitor replies a current value of the requested item.

Set Parameter

Header Message

Check Code

Delimiter

The controller sends commands to set an adjusted value.

Set Parameter Reply

Header

Message

Check Code

Delimiter

The monitor replies to the controller for confirmation.

Get Parameter

Header

Message

Check Code

Delimiter

Get Parameter Reply

Header

Message

Check Code

Delimiter

Save Current Setting Command

Header

Message

Check Code

Delimiter

The controller sends command to get a value for confirmation.

The monitor replies an adjusted value.

The controller requests to store the adjusted value to the monitor.

Save Current Setting Command Reply

 

 

 

 

The monitor replies to the

Header

Message

Check Code

Delimiter

controller for confirmation.

■ For the special command (see the part 7 to 14. and 5.5.2)

Controller

Monitor

Command

Header

Message

Check Code

Delimiter

Command Reply

Header

Message

Check Code

Delimiter

The control does not suitable for above fixed protocol; use the proper command for each control. Please refer section 5.5 and section 7 to 13.

The monitor replies a proper message defined for each control.

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NEC RS-232C manual Communication Format, Get Parameter Reply Monitor