diff --git a/Software/Software.ino b/Software/Software.ino
index eeb9d5a5..bf011743 100644
--- a/Software/Software.ino
+++ b/Software/Software.ino
@@ -124,6 +124,7 @@ void setup() {
   init_contactors();
 
   init_modbus();
+
   init_serialDataLink();
 
   inform_user_on_inverter();
@@ -241,6 +242,11 @@ void init_modbus() {
   handle_static_data_modbus_byd();
 #endif
 #if defined(BYD_MODBUS) || defined(LUNA2000_MODBUS)
+  #if defined(SERIAL_LINK_RECEIVER) || defined(SERIAL_LINK_TRANSMITTER)
+    // Check that Dual LilyGo via RS485 option isn't enabled, this collides with Modbus!
+    #error MODBUS CANNOT BE USED IN DOUBLE LILYGO SETUPS! CHECK USER SETTINGS!
+  #endif
+
   // Init Serial2 connected to the RTU Modbus
   RTUutils::prepareHardwareSerial(Serial2);
   Serial2.begin(9600, SERIAL_8N1, RS485_RX_PIN, RS485_TX_PIN);
@@ -627,18 +633,18 @@ void update_values() {
 }
 
 void runSerialDataLink() {
-  static unsigned long sdlTimer = 0;
+  static unsigned long updateTime = 0;
   unsigned long currentMillis = millis();
 #ifdef SERIAL_LINK_RECEIVER
-  if (currentMillis - sdlTimer >= 1) {  //--- try 2 second
-    sdlTimer = currentMillis;
+  if ((currentMillis - updateTime) > 1) {  //Every 2ms
+    updateTime = currentMillis;
     manageSerialLinkReceiver();
   }
 #endif
 
 #ifdef SERIAL_LINK_TRANSMITTER
-  if (currentMillis - sdlTimer >= 1) {  //--- try 2 second
-    sdlTimer = currentMillis;
+  if ((currentMillis - updateTime) > 1) {  //Every 2ms
+    updateTime = currentMillis;
     manageSerialLinkTransmitter();
   }
 #endif
diff --git a/Software/USER_SETTINGS.h b/Software/USER_SETTINGS.h
index 417c2bb9..a5c521a3 100644
--- a/Software/USER_SETTINGS.h
+++ b/Software/USER_SETTINGS.h
@@ -44,6 +44,6 @@
 //#define DUAL_CAN              //Enable this line to activate an isolated secondary CAN Bus using add-on MCP2515 controller (Needed for FoxESS inverters)
 //#define SERIAL_LINK_RECEIVER  //Enable this line to receive battery data over RS485 pins from another Lilygo (This LilyGo interfaces with inverter)
 //#define SERIAL_LINK_TRANSMITTER  //Enable this line to send battery data over RS485 pins to another Lilygo (This LilyGo interfaces with battery)
-#define WEBSERVER  //Enable this line to enable WiFi, and to run the webserver
+//#define WEBSERVER  //Enable this line to enable WiFi, and to run the webserver
 
 #endif
diff --git a/Software/src/battery/SERIAL-LINK-RECEIVER-FROM-BATTERY.cpp b/Software/src/battery/SERIAL-LINK-RECEIVER-FROM-BATTERY.cpp
index aee4dd1f..e4ddf207 100644
--- a/Software/src/battery/SERIAL-LINK-RECEIVER-FROM-BATTERY.cpp
+++ b/Software/src/battery/SERIAL-LINK-RECEIVER-FROM-BATTERY.cpp
@@ -19,8 +19,6 @@ const uint8_t sendingNumVariables = 0;
 #define SerialReceiver Serial2
 #endif
 
-#define REPORT_SDL_DATA 1
-
 //                                          txid,rxid,  num_send,num_recv
 SerialDataLink dataLinkReceive(SerialReceiver, 0, 0x01, sendingNumVariables,
                                INVERTER_RECV_NUM_VARIABLES);  // ...
@@ -55,8 +53,8 @@ void __getData() {
 void updateData() {
   // --- update with fresh data
   dataLinkReceive.updateData(0, inverterAllowsContactorClosing);
-  //dataLinkReceive.updateData(1,var2);
-  //dataLinkReceive.updateData(2,var3);
+  //dataLinkReceive.updateData(1,var2); // For future expansion, 
+  //dataLinkReceive.updateData(2,var3); // if inverter needs to send data to battery
 }
 
 /*
@@ -156,7 +154,7 @@ void manageSerialLinkReceiver() {
 // --- printUsefullData();
 //Serial.print("SOC = ");
 //Serial.println(SOC);
-#ifdef REPORT_SDL_DATA
+#ifdef DEBUG_VIA_USB
     update_values_serial_link();
 #endif
   }
diff --git a/Software/src/inverter/SERIAL-LINK-TRANSMITTER-INVERTER.cpp b/Software/src/inverter/SERIAL-LINK-TRANSMITTER-INVERTER.cpp
index 838b94df..ccf07c8f 100644
--- a/Software/src/inverter/SERIAL-LINK-TRANSMITTER-INVERTER.cpp
+++ b/Software/src/inverter/SERIAL-LINK-TRANSMITTER-INVERTER.cpp
@@ -17,8 +17,6 @@ const uint8_t receivingNumVariables = BATTERY_RECV_NUM_VARIABLES;
 const uint8_t receivingNumVariables = 0;
 #endif
 
-//#define REPORT_SDL_DATA 1
-
 //                                     txid,rxid,num_tx,num_rx
 SerialDataLink dataLinkTransmit(Serial2, 0x01, 0, BATTERY_SEND_NUM_VARIABLES, receivingNumVariables);
 
@@ -26,8 +24,8 @@ void printSendingValues();
 
 void _getData() {
   inverterAllowsContactorClosing = dataLinkTransmit.getReceivedData(0);
-  //var2 = dataLinkTransmit.getReceivedData(1);
-  //var3 = dataLinkTransmit.getReceivedData(2);
+  //var2 = dataLinkTransmit.getReceivedData(1); // For future expansion, 
+  //var3 = dataLinkTransmit.getReceivedData(2); // if inverter needs to send data to battery
 }
 
 void manageSerialLinkTransmitter() {
@@ -92,7 +90,7 @@ void manageSerialLinkTransmitter() {
       Serial.print(currentTime);
       Serial.println(" - Transmit Good");
 //  printUsefullData();
-#ifdef REPORT_SDL_DATA
+#ifdef DEBUG_VIA_USB
       void printSendingValues();
 #endif
     }