Communication Format - NEC MultiSync V422 Control Manual

4. Communication Format

Header
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
Header
Header
Header
Header
Header
Header
Header
Header
% For the special command (see the part 7 to 14. and 5.5.2)
Controller
Header
Header
Message
Get Parameter
Check Code
Message
Get Parameter Reply
Check Code
Message
Set Parameter
Check Code
Message
Set Parameter Reply
Check Code
Message
Get Parameter
Check Code
Message
Get Parameter Reply
Check Code
Message
Save Current Setting Command
Check Code
Message
Save Current Setting Command Reply
Check Code
Message
Command
Check Code
Message
Command Reply
Check Code
Message
Check Code Delimiter
Monitor
Delimiter
Delimiter
Delimiter
Delimiter
Delimiter
Delimiter
Delimiter
Delimiter
Monitor
Delimiter
Delimiter
(6/71)
The controller sends command to
get a value from the monitor that
you want to change.
The monitor replies a current value
of the requested item.
The controller sends commands to
set an adjusted value.
The monitor replies
controller for confirmation.
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.
The monitor replies
controller for confirmation.
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
message defined for each control.
to the
to the
a proper