NEC LCD8205 - MultiSync - 82" LCD Flat Panel Display Control Manual page 5

5. Basic Commands
5.1. Communication Format (for Basic Commands)
The command packet consists of four parts, Header, Message, Check code and
Delimiter.
Sequence of a typical procedure to control a monitor is as follows,
[A controller and a monitor, two-way communication composition figure]
=
a
Delim it er
Delim it er
=
5.1.1. Header block format (fixed length)
SOH Reserved '0'
st nd
1 2
1 s t byte) SOH: Star t of H ead er
ASC II S OH (0 1 h)
nd
2 byte) Reserved: Reserved for future extensions.
On this monitor, it must be ASCII '0'(30h).
3 rd byte) Destination: Destination equipment ID. (Receiver)
Specify a commands receiver's address.
This value must match the "Monitor ID No." set in the OSD.
Header
Get Parameter
= = =
j
Get Parameter Reply
e = j
=
Set Parameter
Check Code
M es sage
Set Parameter Reply
Header M es sage
Get Parameter
Check Code
M es sage
Get Parameter Reply
Header M es sage
Destination
rd
3
Message
e =
=
= =
= a
Header
Check Code
Delim it er
Header
Check Code
Delim it er
Message
Header
Source Message Type
th th
4 5
Check Code Delimiter
j =
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 to the
controller for confirmation.
The controller sends command to
get a value for confirmation.
The monitor replies an adjusted
value.
Check code
Message Length
th th
6 -7
Delimiter