I am working on a potential new project using a G400. I know there are limits to the number of open and listening TCP/UDP sockets. Does anyone know what they are with the current 4.3 SDK release? There is a possibility for multiple (>32) MODBUS TCP connections. There also might be a need for more than 32 UDP sockets.
Thanks.
I think the Limit is lower than that. Or at least not really higer.
I had a bug in my Modbus TCP device implementation where the socket was not closed on disconnect.
The effect was that at some Point, I got strange Errors (on UART if I remember right), I could only solve by rebooting the device.
I still could connect, which was a bit strange.
I recommend you simply try it.
You can use my Modbus implementation from codeshare for a quick try.