Panasonic PT-DZ13KU Service Manual page 25

4. 2. 2. 2. Command transmission method
Transmit using the following command formats.
Transmitted data
Hash value
(4 2 2 1 -3)
32 bytes
Received data
Header
'0'
0x30
1 byte
Error response
"ERR1"
"ERR2"
"ERR3"
"ERR4"
"ERR5"
"ERRA"
Example: Query Power "QPW"
1. Connects to the projector
IP = 192.168.0.8
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 algorism.
"admin1" = Administrator authority user-name
"panasonic" = Password corresponding to "admin1"
Hash value = "01466bc27ed8c0b7e607471580c55953"
4. Transmits the command
Transmission data = "01466bc27ed8c0b7e607471580c5595300QPW" + (CR)
5. Receives a response.
Reception data = "00000" + (CR)
6. Disconnects the connection with the projector.
Header
'0'
0x30
1 byte
Data section
'0' Control command
0x30 (ASCII string)
1 byte Undefined length
Error message
Undefined control command
Out of parameter range
Busy state or no-acceptable period
Timeout or no-acceptable period
Wrong data length
Password mismatch
4 bytes
port = 1024
Data section
'0' Control command
0x30 (ASCII string)
1 byte Undefined length
Termination symbol
(CR)
0x0d
1 byte
Termination symbol
(CR)
0x0d
1 byte
Termination symbol
(CR)
0x0d
1 byte