r
Received data
Header
Data section
Termination symbol
Command
example
‘0’
0x30
‘0’
0x30
Control command
(ASCII string)
(CR)
0x0d
Data length
1 byte
1 byte
Undefined length
1 byte
f
Example: The projector is in standby status
“00000” (CR)
r
Error response
String
Details
Termination symbol
Message
"ERR1"
Undefined control command
(CR)
0x0d
"ERR2"
Out of parameter range
"ERR3"
Busy state or no-acceptable period
"ERR4"
Timeout or no-acceptable period
"ERR5"
Wrong data length
"ERRA"
Password mismatch
Data length
4 bytes
―
1 byte
Note
f
The projector automatically disconnects from the network immediately after sending the command. Such specifications are made from the
viewpoint of security, such as prevention of illegal operation of the projector by a malicious third party. To send commands continuously,
make a request for network connection every time and send it. For details, see “Communication flow between the server and the client (
x
page 165).
Communication flow between the server and the client
When sending / receiving commands via LAN, refer to the communication flow shown below.
Server
: the projector
Client
: the control device such as a computer
Client
Server
First session
Second session
Connection query
Sending key
Send first command
Respond first command
Cut off
Connection query
Sending key
Send second command
Respond second command
Cut off
ENGLISH
-
165
Chapter 7 Appendix - Technical information
