It works correctly with compiler version 2.10. With compiler version 2.50, it compiles successfully and the UART functions properly; however, the digital input fails to read values. I have not tested other functions.

The digital input isn't working. What might I have configured incorrectly?
Please help.
MCU: PIC18F47Q10
I am uploading the project.



Title:
Description:
Device: PIC.18F.18F47Q10
Generated by: Flowcode v11.0.2.17
Date: Wednesday, September 09, 2026 17:34:54
Users: 1
Registered to:
Licence key ...

Thank you for your interest.

I was unable to check.

Thank you.

I have a question.

Is it impossible to use the RD7 as the UART RX on the PIC24FJ512GA606?

Thank you.

I tried to communicate between an RS-485 RTU-based Modbus master and slave, but I am getting the following error.

Using <2.50> user settings for compiler
Launching the compiler...
C:\ProgramData\MatrixTSL\FlowcodeV11\FCD\PIC\batch\pic_xc8_comp.bat "C:\Program Files\Microchip\xc8\v2.50\pic\bin ...

I tried to communicate between an RS-485 RTU-based Modbus master and slave, but I am getting the following error.

Using <2.50> user settings for compiler
Launching the compiler...
C:\ProgramData\MatrixTSL\FlowcodeV11\FCD\PIC\batch\pic_xc8_comp.bat "C:\Program Files\Microchip\xc8\v2.50\pic\bin ...

Communication works if the pull-up resistor is changed to 3 kiloohms. It is expected that this result is due to the threshold level. It appears that a pull-up resistor of about 2k ohms is necessary for stable communication.
The pink color is the waveform directly connected to the MCU, and the yellow ...

This seems to be about RS-485 terminator resistors.

Of course, I tried attaching 4.7K Ohm and 10K Ohm pull-up resistors, but the result is a communication failure.

The pink waveform is the waveform outputting "Test" from the PIC18F57Q84.

The second yellow waveform is the waveform outputting "Test" from another device (PC USB-Serial).

Hello.

I am trying to proceed with a project using the PIC18F57Q84. I had trouble because it wouldn't compile. After receiving advice on how to switch compilers, it now compiles successfully. However, UART communication is not working. When I checked with an oscilloscope, the waveform phase was ...