Hitachi CPX4 Manuel D'utilisation page 209

Command Control via the Network (continued)
Command Format
[TCP #23]
1. Protocol
Consist of header (7 bytes) + command data (6 bytes)
2. Header
3. Command data
Command data chart
Action
low high
Action
1 Set
2 Get
4 Increment
5
6 Execute
Requesting projector status (Get command)
(1) Send the following request code from the PC to the projector.
Header + Command data ('02H' + '00H' + type (2 bytes) + '00H' + '00H')
(2) The projector returns the response code '1DH' + data (2 bytes) to the PC.
Changing the projector settings (Set command)
(1) Send the following setting code from the PC to the projector.
Header + Command data ('01H' + '00H' + type (2 bytes) + setting code (2 bytes))
(2) The projector changes the setting based on the above setting code.
(3) The projector returns the response code '06H' to the PC.
Using the projector default settings (Reset Command)
(1) The PC sends the following default setting code to the projector.
Header + Command data ('06H' + '00H' + type (2 bytes) + '00H' + '00H')
(3) The projector returns the response code '06H' to the PC.
Increasing the projector setting value (Increment command)
(1) The PC sends the following increment code to the projector.
Header + Command data ('04H' + '00H' + type (2 bytes) + '00H' + '00H')
(2) The projector increases the setting value on the above setting code.
(3) The projector returns the response code '06H' to the PC.
8
Type
low high
Content
Change setting to desired value.
Read projector internal setup value.
Increment setup value by 1.
Run a command.
Setting code
low high