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INF-19
SECTION 1 SERVICE INFORMATION
4. 2. 2. 2. Command transmission method
Transmit using the following command formats.
Transmitted date
Transmitted date
Header
Data section
Termination symbol
Hash value
(4. 2. 2. 1. -3)
'0'
0x30
'0'
0x30
Control command
(ASCII string)
(CR)
0x0d
32 bytes
1 byte
1 byte
Undefined length
1 byte
Received data
Header
Data section
Termination symbol
'0'
0x30
'0'
0x30
Control command
(ASCII string)
(CR)
0x0d
1 bytes
1 byte
Undefined length
1 byte
Error response
Error message
Termination symbol
“ERR1”
Undefined control command
“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
(CR)
0x0d
4 byte
1 byte
Example: Query Power "QPW"
1. Connects to the projector
1. Connects to the projector
IP = 192.168.0.8
port = 1024
2. Receives a response
Response = "NTCONTROL 1 1aa6c14e" + (CR)
"1aa6c14e" = 8 bytes random characters
3. Generates a hash value (message digest) from "admin1:panasonic:1aa6c14e" by using the MD5 algorithm.
"admin1" = Administrator authority user-name
"panasonic" = Password corresponding to "admin1"
Hash value = "01466bc27ed8c0b7e607471580c55953"
4. Transmits the command
Transmission data = "01466bc27ed8c0b7e607471580c5595300QPW" + (CR)
Transmission data = "01466bc27ed8c0b7e607471580c5595300QPW" + (CR)
5. Receives a response.
Reception data = "00000" + (CR)
6. Disconnects the connection with the projector.
6. Disconnects the connection with the projector.
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