Thank you for your help.
When will the PIC Q43 series be supported?

I have tried various methods, but modbus tcp still does not work. When I scanned with a port scan program, port number 502 was not scanned. When I run the Modbus slave program, the PC's port 502 is scanned. Perhaps port number 502 is not assigned in FC10. Is there any way to solve this? Please help ...

Even if you change the SPI to software ch1 ch2, it does not work.
And even if I change the prescale to Fosc/64 Fosc/16 Fosc/4, it doesn't work.
PING is still works fine.
Thank you.

Ping to the IP address where W5500 is set works fine. And all other functions work normally.

Hello?

Project : Modbus gateway
MCU : PIC18F67K40(I made a PCB with PIC18F57Q43, but FC10 does not support the Q43 series)
Ethernet : W5500

While working on a project, Modbus TCP slave mode does not work.
I am sending the project file I wrote below. Please point out any mistakes.
Thank you

Thank you for your help.
But I don't understand why the register values change.
So I searched for MCU and found that PIC18F57Q43 is suitable.
But FC10 doesn't support it.
It seems that other people also want support for the Q43 series.
If possible, can you support the Q43 series?

I am working on a project using PIC18F45K40.
I need to use 4 UARTs. So two will use modbus and two will use soft serial.
A UART interrupt was created by referring to the data, but it does not compile.
Could you please help?
thank you.

When will the Q43 series be added?

Should I just get on with it?

Please let me know how I can handle it.

Sorry don't know.