Falgsc-al: First Upload

2020-12-08T23:55:02Z

First Upload

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==Synopsis==
==Notes==

This was developed to test communication to the EPEVER AN Solar controller from the Arduino

==Code==
<syntaxhighlight lang="C++" line='line'>
//Power is not currently working for battery or panel

#include <ModbusMaster.h>

#define MAX485_DE 49
#define MAX485_RE 48

#define PANEL_VOLTS 0x00
#define PANEL_AMPS 0x01
#define PANEL_POWER_L 0x02
#define PANEL_POWER_H 0x03
#define BATT_VOLTS 0x04
#define BATT_AMPS 0x05
#define BATT_POWER_L 0x06
#define BATT_POWER_H 0x07
#define OVERVOLT_DISC 0x00
#define CHARGING_LIMIT 0x01
#define OVERVOLT_RECON 0x02
#define EQUILIBRIUM_CV 0x03
#define BOOST_CV 0x04
#define FLOAT_CV 0x05
#define BOOST_RECON 0x06

// instantiate ModbusMaster object
ModbusMaster node;

//#include <SoftwareSerial.h>

//SoftwareSerial mySerial(10, 11); // RX, TX

void setup()
{
Serial.begin(115200);
while (!Serial) {
;
}
Serial.println("Moooooo!");

pinMode(MAX485_RE, OUTPUT);
pinMode(MAX485_DE, OUTPUT);
// Init in receive mode
digitalWrite(MAX485_RE, 0);
digitalWrite(MAX485_DE, 0);

// Modbus at 115200 baud
Serial1.begin(115200);

// EPEver Device ID 1
node.begin(1, Serial1);

// Callbacks
node.preTransmission(preTransmission);
node.postTransmission(postTransmission);
}

void loop()
{
uint8_t result;

// Read 8 registers starting at 0x3100)
node.clearResponseBuffer();
result = node.readInputRegisters(0x3100, 8);

if (result == node.ku8MBSuccess)
{
Serial.print("VPanel: ");
Serial.println(node.getResponseBuffer(PANEL_VOLTS)/100.0f);
Serial.print("IPanel: ");
Serial.println(node.getResponseBuffer(PANEL_AMPS)/100.0f);
Serial.print("PPanel: ");
Serial.println((node.getResponseBuffer(PANEL_POWER_L) +
node.getResponseBuffer(PANEL_POWER_H) << 16)/100.0f);

Serial.print("VBatt: ");
Serial.println(node.getResponseBuffer(BATT_VOLTS)/100.0f);
Serial.print("Ibatt: ");
Serial.println(node.getResponseBuffer(BATT_AMPS)/100.0f);
Serial.print("PBatt: ");
Serial.println((node.getResponseBuffer(BATT_POWER_L) +
node.getResponseBuffer(BATT_POWER_H) << 16)/100.0f);
Serial.println();
Serial.println();
} else {
Serial.print("Miss read, ret val:");
Serial.println(result);
}
//delay(1000);

// Read 6 registers starting at 0x9003)
node.clearResponseBuffer();
result = node.readHoldingRegisters(0x9003, 7);

if (result == node.ku8MBSuccess)
{
Serial.print("Overvolt Disconnect Voltage: ");
Serial.println(node.getResponseBuffer(OVERVOLT_DISC)/100.0f);
Serial.print("Charging Limit Voltage: ");
Serial.println(node.getResponseBuffer(CHARGING_LIMIT)/100.0f);
Serial.print("Overvolt Disconnect Voltage: ");
Serial.println(node.getResponseBuffer(OVERVOLT_DISC)/100.0f);
Serial.print("Overvolt Reconnect Voltage: ");
Serial.println(node.getResponseBuffer(OVERVOLT_RECON)/100.0f);
Serial.print("Equilibrium Charge Voltage: ");
Serial.println(node.getResponseBuffer(EQUILIBRIUM_CV)/100.0f);
Serial.print("Boost Charging Voltage: ");
Serial.println(node.getResponseBuffer(BOOST_CV)/100.0f);
Serial.print("Float Charging Voltage: ");
Serial.println(node.getResponseBuffer(FLOAT_CV)/100.0f);
Serial.print("Boost Reconnect Voltage: ");
Serial.println(node.getResponseBuffer(BOOST_RECON)/100.0f);

Serial.println();
Serial.println();
} else {
Serial.print("Miss read, ret val:");
Serial.println(result);
}

delay(2000);
}

void preTransmission()
{
digitalWrite(MAX485_RE, 1);
digitalWrite(MAX485_DE, 1);
}

void postTransmission()
{
digitalWrite(MAX485_RE, 0);
digitalWrite(MAX485_DE, 0);
}

</syntaxhighlight>

EPEVER Solar Controller RS485 MODBUS test - Revision history

Falgsc-al: First Upload