Panasonic PT-RZ21К Operating Instructions Manual page 236

Data length 1 byte
f Example: Transmission of power supply status acquisition command
"00QPW" (CR)
r Received data
Command
example 0x30
Data length 1 byte
f Example: The power of the projector is in standby status
"00000" (CR)
r Error response
String
"ERR1"
"ERR2"
"ERR3"
Message
"ERR4"
"ERR5"
"ERRA"
Data length 4 bytes
Note
f The projector will automatically disconnect the connection with the network right after sending the command. This is the specification based
on the security view point to prevent unauthorized operation of this product by a malicious third party. To send commands continuously,
execute the network connection request every time the command is to be sent. For details, refer to "Communication flow between server
and client" (x page 236).
Communication flow between server and client
To send/receive a command via LAN, refer to the communication flow indicated below.
Server: Projector
Client: Control device such as a computer
236 - ENGLISH
Chapter 7 Appendix — Technical information
Header
Header
'0'
Undefined control command
Out of parameter range
Busy state or no-acceptable period
Timeout or no-acceptable period
Wrong data length
Password mismatch
Session 1
Responding to command 1
Session 2
Responding to command 2
1 byte
'0' Control command
0x30
1 byte
Details
―
Server
Connection request
Sending of key
Sending of command 1
Disconnection
Connection request
Sending of key
Sending of command 2
Disconnection
Data section
Undefined length
Data section
(ASCII string)
Undefined length
Termination
symbol
1 byte
Termination
symbol
(CR)
0x0d
1 byte
Termination
symbol
(CR)
0x0d
1 byte