Communication Flow; Command Transmission (Pc Side); Command Reception (Projector Side); Command/Response - Canon WUX500ST User Commands

3. Communication Flow

Command Transmission (PC side)

Commands should be sent from PC in a way that each character is sent within the specified Tc
(inter-character timeout).

Command Reception (projector side)

The projector retains incoming characters within a specific Tc, and recognizes the data as "received
command" when delimiter is received.
If the character interval received exceeds the Tc or if a delimiter is not received within 256 characters, all
data already received is lost, and the mode is reset to standby to receive commands again.

Command/Response

A response is always returned within Tr(*) for a command sent from the PC.
PC
Within Tr Tr以内
(*) The timeout interval between command and response (Tr) is 15 seconds.

Response Reception Timeout

If a response is not received within the Tr (timeout interval between command and response) while standing
by a waiting response after sending a command from the PC, it is deemed to have exceeded the "response
reception timeout." Please resend the command.

Other Items

To execute commands via wired LAN or wireless LAN, the wired LAN or wireless LAN function must be
enabled in advance.
To execute commands via HDBaseT, the HDBaseT function must be enabled and serial communication
must be set to HDBaseT in advance.
The PC side cannot send the next user command before a response for the first command is returned. If
two or more user commands are received, user commands from 2nd one are discarded. If 2 or more user
commands are received, only the 1st command is processed, and a response is returned when finished.
For commands sent via wired LAN or wireless LAN, if multiple commands are embedded in a single packet,
the projector processes the first command and discards the rest.
Within Tr
プロジェクター
Projector
Command コマンド
Response
レスポンス
Projector
Command 1
Command 2
Command 3
Response to Command 1
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WUX500ST User Commands