Matrix user forums

Hello,

I want to turn off Benq projectors via Ethernet.
The Benq projectors use a PJLink protocol. The projector is set as the server and the CONTROLLER as the client.
The message looks like this:
Message:"%1POWR 0\r"
Port:4352
IP:192.168.88.249
The hardware is W5100Ethernet shield + Arduino Mega. I upload the program that does not work.
PJLink spec: https://pjlink.jbmia.or.jp/english/data ... nk_5-1.pdf

Hello,

Instead of calling CreateTCPSocket and SetDestination have you tried calling TCPConnect instead? Also probably need a TCPClose at the end of the program before the loop to close the socket.

Hmm maybe you did have things right already, here is an example from our Internet solution.
Edit: No sorry I looked again and it does also use the TCPConnect macro.

The TCPConnect uses port 80 which makes sense as it is requesting a web page.

The CreateTCPSocket uses a random port number?

I'm a bit rusty on all of this, think I need to buy the solution and have a good read of the manual

Hello!
Thanks for the help.
I'm telling you I do not understand the TCP protocol.

The projector has a fixed IP address and a fixed port number.
The default PJLink port is 4352. This can be modified online.
I downloaded a free "Packet Sender" that works with shutdown.
I just set the IP address and the port number, enter the command and send it.
I do not know how to implement this in Flowcode.
Packet Sender:https://packetsender.com/