modbus rtu and zuno
Posted: 12 Jun 2019 21:09
Hey. I try to solve the problem by integrating z-wave and modbus RTU (RS-485) last 1-2 months. Does anyone have any experience with this? I'm trying to send a simple command to read or write the register, but it does not work. What I am sending is not recognized correctly. How to send a command to read and write? 
Code: Select all
if (varState > 0) {
sendText = '01030200017984';
}
else {
sendText = '0103020000b844';
}
digitalWrite(pin_direction_RX_TX, HIGH);
delay(5);
Serial.print(sendText, HEX);
Serial0.print(sendText, HEX);
delay(5);
digitalWrite(pin_direction_RX_TX, LOW);