** 2. The LED light flashes once per second, that is, the serial port sends a command to read the number of pulses ** 3. The serial monitor can observe that a position value is output per second ...

This sketch is supposed to test Dragino RS485-BL (Modbus master), using an Arduino UNO as a Modbus slave. The Dragino will be configured to read data stored in Arduino variables (an array), when ...