diff --git a/CMakeLists.txt b/CMakeLists.txt
index cae14e7..d1a5dcc 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -18,7 +18,10 @@ file(GLOB SOURCES
 add_library(libhoymiles STATIC ${SOURCES})
 
 add_subdirectory(src/libmodbus)
-target_link_libraries(libhoymiles INTERFACE libmodbus)
+target_link_libraries(libhoymiles libmodbus)
+
+add_executable(libhoymiles_example src/main.cpp)
+target_link_libraries(libhoymiles_example libhoymiles)
 
 
 if(WIN32)
diff --git a/inc/microinverter.h b/inc/microinverter.h
index 0eaf563..beba6e5 100644
--- a/inc/microinverter.h
+++ b/inc/microinverter.h
@@ -13,7 +13,7 @@ class Microinverter {
       private:
 	modbus_t *modbus;
 
-	Sunspec sunspec;
+	// Sunspec sunspec;
 
 	int startAddress;
 
diff --git a/src/dtu.cpp b/src/dtu.cpp
index a19fec1..484fbb1 100644
--- a/src/dtu.cpp
+++ b/src/dtu.cpp
@@ -20,6 +20,8 @@ Dtu::Dtu(const char *address, int id, bool rtu, bool tcp) {
 		modbus_rtu_set_serial_mode(this->modbus, MODBUS_RTU_RS485);
 	}
 
+	modbus_set_debug(this->modbus, 1);
+
 	this->connected = false;
 	if (modbus_connect(this->modbus) == -1) {
 		std::cerr << "NOT CONNECTED" << std::endl;
@@ -41,13 +43,21 @@ Dtu::~Dtu() {
 
 void Dtu::populateMicroinverters() {
 	int portStartAddress = 0x4000;
-	uint16_t registers[19];
+	int registersToRead{19};
+	uint16_t registers[registersToRead];
+
+	bool lastSuccesful{true};
 
 	while (portStartAddress <= (0x4000 + (0x0019 * 99))) {
-		int registerCount;
-		registerCount = modbus_read_registers(this->modbus, portStartAddress, 19, registers);
+		int registerCount{-1};
+		int timesTried{0};
+		while((timesTried < 3) && (lastSuccesful && registerCount == -1)) {
+			registerCount = modbus_read_registers(this->modbus, portStartAddress, registersToRead, registers);
+			timesTried++;
+		}
 		portStartAddress += 0x0019;
-		if (registers[0] == 12) {
+		if (registers[0] == 12 && registerCount != -1) {
+			lastSuccesful = true;
 			Port port{portStartAddress};
 			port.setParametersFromMicroinverterArray(registers, 0);
 
@@ -56,10 +66,24 @@ void Dtu::populateMicroinverters() {
 				this->microinverters.push_back(microinverter);
 			}
 
-			this->getMicroinverterBySerialNumber(port.getParameterByName("microinverterSerialNumber").first.get()->getValue().first.i).first->ports.push_back(port);
+			Microinverter* microinverter = this->getMicroinverterBySerialNumber(port.getParameterByName("microinverterSerialNumber").first.get()->getValue().first.i).first;
+			std::vector<Port>::iterator portsIterator = microinverter->ports.begin();
+			bool valueExists{false};
+			while(portsIterator != microinverter->ports.end() && !valueExists) {
+				if(portsIterator->getParameterByName("portNumber").first.get()->getValue().first.i == port.getParameterByName("portNumber").first.get()->getValue().first.i) {
+					valueExists = true;
+				}
+				portsIterator++;
+			}
+			if(!valueExists) {
+				microinverter->ports.push_back(port);
+			}
+		}
+		else{
+			lastSuccesful = false;
 		}
 
-		std::this_thread::sleep_for(std::chrono::milliseconds(10));
+		std::this_thread::sleep_for(std::chrono::milliseconds(20));
 	}
 }
 
diff --git a/src/main.cpp b/src/main.cpp
new file mode 100644
index 0000000..fa82526
--- /dev/null
+++ b/src/main.cpp
@@ -0,0 +1,7 @@
+#include "dtu.h"
+
+int main() {
+    Dtu dtu{"/dev/ttyUSB0", 101, true, false};
+
+    return 0;
+}
\ No newline at end of file
diff --git a/src/microinverter.cpp b/src/microinverter.cpp
index a6542a2..cd3ff2c 100644
--- a/src/microinverter.cpp
+++ b/src/microinverter.cpp
@@ -8,7 +8,7 @@
 #include "port.h"
 #include "sunspec.h"
 
-Microinverter::Microinverter(modbus_t *modbus, int startAddress, long long serialNumber) : sunspec(40000, modbus) {
+Microinverter::Microinverter(modbus_t *modbus, int startAddress, long long serialNumber) {
 	this->modbus = modbus;
 	this->startAddress = startAddress;
 	this->serialNumber = serialNumber;
diff --git a/src/sunspec.cpp b/src/sunspec.cpp
index 3ad2f64..b475c6d 100644
--- a/src/sunspec.cpp
+++ b/src/sunspec.cpp
@@ -16,10 +16,10 @@ Sunspec::Sunspec(int address, modbus_t *modbus) {
 }
 
 void Sunspec::setValues() {
-    uint16_t registers[70];
+    uint16_t registers[2];
 
     int registerCount;
-    registerCount = modbus_read_registers(this->modbus, this->sunspecAddress, 70, registers);
+    registerCount = modbus_read_registers(this->modbus, this->sunspecAddress, 2, registers);
 
     std::vector<std::shared_ptr<SunspecParameter>>::iterator parametersIterator = this->parameters.begin();
     while(parametersIterator != this->parameters.end()) {