Communication Format - NEC MultiSync C431 User Manual

4. Communication Format

Header
The command packet consists of four parts, Header, Message, Check code and Delimiter.
Note: Don't add extra data (Example: padding data) after 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
■ For the special command (see the part 7 to 24. and 5.5.2)
Controller
Message
Get Parameter
Get Parameter Reply
Set Parameter
Set Parameter
Get Parameter
Get Parameter Reply
Save Current Setting Command
Save Current Setting Command Reply
Command
Command Reply
Check Code Delimiter
Monitor
Monitor
(7/104)
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
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
control. Please refer section
5.5 and section 7 to 26.
The monitor replies
message defined
to the
to
to the
for each
a proper
for each