Epever Registers

Projects Networking, Protocols, and Devices
1

I need help figuring out what I'm doing wrong. I can access all the registers except for the ones related to power generation statistics. Specifically, I'm having trouble getting those registers to work. Can anyone guide me in the right direction?
A or BSeriesControllerProtocolv2.6.pdf (716.1 KB)

#include <ModbusMaster.h>






#define MAX485_DE      26
#define MAX485_RE_NEG  25

ModbusMaster node;





    uint16_t energyTodayL;
    uint16_t energyTodayH;
    uint32_t energyToday;



void preTransmission()
{
  digitalWrite(MAX485_RE_NEG, 1);
  digitalWrite(MAX485_DE, 1);
}

void postTransmission()
{
  digitalWrite(MAX485_RE_NEG, 0);
  digitalWrite(MAX485_DE, 0);
}



void setup() {

  // Defined in thingProperties.h
  initProperties();

  // Connect to Arduino IoT Cloud
  ArduinoCloud.begin(ArduinoIoTPreferredConnection);

  /*
     The following function allows you to obtain more information
     related to the state of network and IoT Cloud connection and errors
     the higher number the more granular information you’ll get.
     The default is 0 (only errors).
     Maximum is 4
  */
  setDebugMessageLevel(2);
  ArduinoCloud.printDebugInfo();


  pinMode(MAX485_RE_NEG, OUTPUT);
  pinMode(MAX485_DE, OUTPUT);

  digitalWrite(MAX485_RE_NEG, 0);
  digitalWrite(MAX485_DE, 0);

  Serial2.begin(115200);
  Serial.begin(9600);




  // ...

  node.begin(1, Serial2);

  node.preTransmission(preTransmission);
  node.postTransmission(postTransmission);




}






void loop() {
  ArduinoCloud.update();
  uint8_t result = node.readInputRegisters(0x3100, 11);
  if (result == node.ku8MBSuccess) {
    // ePbatterycurrent2 = (node.getResponseBuffer(0x05) / 100.0f);
    // ePPVcurrent2 = (node.getResponseBuffer(0x01) / 100.0f) ;
    // ePPVvoltage2 = (node.getResponseBuffer(0x00) / 100.0f);
    // ePvatteryvoltage2 = (node.getResponseBuffer(0x04) / 100.0f) ;
    Serial.print("PV array voltage : ");
    Serial.println(node.getResponseBuffer(0x00) / 100.0f);
    Serial.print("PV array current : ");
    Serial.println(node.getResponseBuffer(0x01) / 100.0f);
    Serial.print("PV array power : ");
    Serial.println(node.getResponseBuffer(0x02) / 100.0f);
    Serial.print("Battery voltage : ");
    Serial.println(node.getResponseBuffer(0x04) / 100.0f);
    Serial.print("Battery charging current : ");
    Serial.println(node.getResponseBuffer(0x05) / 100.0f);
    Serial.print("Battery charging power : ");
    Serial.println(node.getResponseBuffer(0x06) / 100.0f);
    Serial.print("Load voltage : ");
    Serial.println(node.getResponseBuffer(0x0C) / 100.0f);
    Serial.print("Load current : ");
    Serial.println(node.getResponseBuffer(0x0D) / 100.0f);
    Serial.print("Load power : ");
    Serial.println(node.getResponseBuffer(0x0E) / 100.0f);
    Serial.print("Battery SOC : ");
    Serial.println(node.getResponseBuffer(0x311A) / 1.0f);
    Serial.print("Remote battery temperature : ");
    Serial.println(node.getResponseBuffer(0x10) / 100.0f);


    Serial.println("==========================");

    uint8_t result2 = node.readInputRegisters(0x3300, 7);
    energyTodayL = node.getResponseBuffer(0x330C);
    energyTodayH = node.getResponseBuffer(0x330D);
    energyToday = (energyTodayH << 16) | energyTodayL;
    //maxBV = (node.getResponseBuffer(0x02) / 100.0f);
    // maxPV = (node.getResponseBuffer(0x00) / 100.0f);
    // minBV = (node.getResponseBuffer(0x03) / 100.0f);
    // minPV = (node.getResponseBuffer(0x01) / 100.0f);
    // genEnergytoday = (node.getResponseBuffer(0x0C) / 100.0f);

    Serial.print("Maximum PV voltage today: ");
    Serial.println(node.getResponseBuffer(0x00) / 100.0f);
    Serial.print("Minimum PV voltage today: ");
    Serial.println(node.getResponseBuffer(0x01) / 100.0f);
    Serial.print("Maximum battery voltage today: ");
    Serial.println(node.getResponseBuffer(0x02) / 100.0f);
    Serial.print("Minimum battery voltage today: ");
    Serial.println(node.getResponseBuffer(0x03) / 100.0f);
    Serial.print("Generated energy today: ");
    Serial.println(energyToday / 100.0f);


  } else {
    Serial.println("Failed to read from Modbus device.");
  }




  delay(1000);

}
2

Hello

This function expect a uint8_t parameter

3

most of the "power generation" values consists of two values - HI and LO
You have to combine them.

I use something like:

Serial.println((node.getResponseBuffer(0x0E) + ((uint32_t)node.getResponseBuffer(0x0F) << 16))/100.0f); // cast and brackets`
4

Hello.
Was it somehow solved?
Can you read everything?
Thank you.