The following is an example of an Arduino modbus RTU Slave program for Read Digital Input, Write Digital Output, Read Analog Input, Write Analog Output. For modbys library, please download HERE
OK, here's the code
#include <modbus.h> #include <modbusDevice.h> #include <modbusRegBank.h> #include <modbusSlave.h> /* PINS Add more registers if needed Digital input pins 2,3,4,5,6,7 Digital output pins 8,9,12,13 Analog output pins 10,11 (PWM) Analog input pins 0,1,2,3,4,5 */ modbusDevice regBank; modbusSlave slave; int AI0,AI1,AI2,AI3,AI4,AI5; void setup() { regBank.setId(1); ///Set Slave ID //Add Digital Input registers regBank.add(10002); regBank.add(10003); regBank.add(10004); regBank.add(10005); regBank.add(10006); regBank.add(10007); // Add Digital Output registers regBank.add(8); regBank.add(9); regBank.add(12); regBank.add(13); //Analog input registers regBank.add(30001); regBank.add(30002); regBank.add(30003); regBank.add(30004); regBank.add(30005); regBank.add(30006); //Analog Output registers regBank.add(40010); regBank.add(40011); slave._device = ®Bank; slave.setBaud(9600); pinMode(2,INPUT); pinMode(3,INPUT); pinMode(4,INPUT); pinMode(5,INPUT); pinMode(6,INPUT); pinMode(7,INPUT); pinMode(8,OUTPUT); pinMode(9,OUTPUT); pinMode(12,OUTPUT); pinMode(13,OUTPUT); } void loop(){ while(1){ //Digital Input byte DI2 = digitalRead(2); if (DI2 >= 1)regBank.set(10002,1); if (DI2 <= 0)regBank.set(10002,0); byte DI3 = digitalRead(3); if (DI3 >= 1)regBank.set(10003,1); if (DI3 <= 0)regBank.set(10003,0); byte DI4 = digitalRead(4); if (DI4 >= 1)regBank.set(10004,1); if (DI4 <= 0)regBank.set(10004,0); byte DI5 = digitalRead(5); if (DI5 >= 1)regBank.set(10005,1); if (DI5 <= 0)regBank.set(10005,0); byte DI6 = digitalRead(6); if (DI6 >= 1)regBank.set(10006,1); if (DI6 <= 0)regBank.set(10006,0); byte DI7 = digitalRead(7); if (DI7 >= 1)regBank.set(10007,1); if (DI7 <= 0)regBank.set(10007,0); //Digital output int DO8 = regBank.get(8); if (DO8 <= 0 && digitalRead(8) == HIGH)digitalWrite(8,LOW); if (DO8 >= 1 && digitalRead(8) == LOW)digitalWrite(8,HIGH); int DO9 = regBank.get(9); if (DO9 <= 0 && digitalRead(9) == HIGH)digitalWrite(9,LOW); if (DO9 >= 1 && digitalRead(9) == LOW)digitalWrite(9,HIGH); int DO12 = regBank.get(12); if (DO12 <= 0 && digitalRead(12) == HIGH)digitalWrite(12,LOW); if (DO12 >= 1 && digitalRead(12) == LOW)digitalWrite(12,HIGH); int DO13 = regBank.get(13); if (DO13 <= 0 && digitalRead(13) == HIGH)digitalWrite(13,LOW); if (DO13 >= 1 && digitalRead(13) == LOW)digitalWrite(13,HIGH); //Analog input ***READ Twice deliberately AI0 = analogRead(0); delay(5); AI0 = analogRead(0); regBank.set(30001, (word) A0); delay(10); AI1 = analogRead(1); delay(5); AI1 = analogRead(1); regBank.set(30002, (word) AI1); delay(10); AI2 = analogRead(2); delay(5); AI2 = analogRead(2); regBank.set(30003, (word) AI2); delay(10); AI3 = analogRead(3); delay(5); AI3 = analogRead(3); regBank.set(30004, (word) AI3); delay(10); AI4 = analogRead(4); delay(5); AI4 = analogRead(4); regBank.set(30005, (word) AI4); delay(10); AI5 = analogRead(5); delay(5); AI5 = analogRead(5); regBank.set(30006, (word) AI5); delay(10); //Analog output word AO10 = regBank.get(40010); analogWrite(10,AO10); delay(10); word AO11 = regBank.get(40011); analogWrite(11,AO11); delay(10); slave.run(); } }
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Next for the test .. we will use the qModmaster application
Modbus RTU configuration settings as shown above, for Serial Port, please adjust it to the serial port that you are using.
and here I will read the Analog input register data with addresses 30001, and 30002
here it can be seen that the data values of the registers 3001 = 1023, and 30002 = 952.
Okay that's it for now & good luck
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Selamat siang Pak. untuk file libary ada link untuk download? trims
ردحذفUntuk library modbus silahkan download disini pak, https://code.google.com/archive/p/arduino-modbus-slave/downloads
حذف