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Dear @emelianov, I had my first project with Modbus RTU. I need only help to test a my hardware, custom board. Programs is only for HW testing, from your examples.
My device project is as a slave. CPU is ESP32 WROOM, with modbus converter MAX3485 with DE.
Some is bad, communication between this CPUs not working.
Dear @emelianov, I had my first project with Modbus RTU. I need only help to test a my hardware, custom board. Programs is only for HW testing, from your examples.
My device project is as a slave. CPU is ESP32 WROOM, with modbus converter MAX3485 with DE.
Some is bad, communication between this CPUs not working.
Slave program
For testing this my hardware project, I mount a master RTU with the same converter, EPS8266 Wemos D1 mini.
Master program
Thank you very much for help.
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