diff --git a/.~lock.tmp.xlsx# b/.~lock.tmp.xlsx#
new file mode 100644
index 0000000..f88d1b6
--- /dev/null
+++ b/.~lock.tmp.xlsx#
@@ -0,0 +1 @@
+,DESKTOP-M40GG9U/Thad,DESKTOP-M40GG9U,15.10.2025 14:33,file:///C:/Users/Thad/AppData/Roaming/LibreOffice/4;
\ No newline at end of file
diff --git a/downloader.py b/downloader.py
new file mode 100644
index 0000000..4d26884
--- /dev/null
+++ b/downloader.py
@@ -0,0 +1,415 @@
+import requests
+from typing import List, Optional, Union, Tuple
+import re
+
+class RSLoggerDownloader:
+    def __init__(self, base_url: str):
+        """
+        Initialize downloader for RS Logger device
+        
+        Args:
+            base_url: Base URL like "http://rslogger" or "http://192.168.1.100"
+        """
+        self.base_url = base_url.rstrip('/')
+        self.session = requests.Session()
+        
+    def get_config(self) -> dict:
+        """Get logger configuration parameters"""
+        url = f"{self.base_url}/logc.xml"
+        response = self.session.get(url, timeout=5)
+        response.raise_for_status()
+        
+        parts = response.text.split('#')
+        config = {
+            'date_from': parts[0],
+            'date_to': parts[1],
+            'timestamp': int(parts[2]),
+            'file_mode': int(parts[3]),
+            'data_format': int(parts[4]),
+            'timestamp_char': chr(int(parts[5])),
+            'time_format': int(parts[6])
+        }
+        
+        return config
+    
+    def _get_progress(self, data: bytearray) -> int:
+        """Extract progress percentage from end of data"""
+        length = len(data)
+        while length >= 2 and data[length-1] == 10 and data[length-2] == 13:
+            length -= 2
+        
+        if length > 0:
+            return data[length - 1]
+        return 0
+    
+    def _clear_endofline(self, data: bytearray) -> int:
+        """Remove trailing carriage returns and get data length"""
+        length = len(data)
+        while length >= 2 and data[length-1] == 10 and data[length-2] == 13:
+            length -= 2
+        return length
+    
+    def decode_control_characters(self, data: bytes) -> str:
+        """
+        Decode the <13>, <10>, etc. control character sequences back to actual characters.
+        
+        Args:
+            data: Raw bytes with <NN> sequences
+            
+        Returns:
+            String with control characters properly decoded
+        """
+        # Convert bytes to string
+        text = data.decode('ascii', errors='replace')
+        
+        # Replace <NN> patterns with actual characters
+        def replace_control(match):
+            code = int(match.group(1))
+            return chr(code)
+        
+        # Match <digits> pattern and replace with the actual character
+        decoded = re.sub(r'<(\d+)>', replace_control, text)
+        
+        return decoded
+    
+    def parse_log_data(self, chunks: List[bytearray], config: dict, channel: int = 3) -> bytearray:
+        """
+        Parse raw log data chunks into readable format
+        
+        Args:
+            chunks: List of raw data chunks
+            config: Configuration dictionary from get_config()
+            channel: Channel to parse (1=A, 2=B, 3=both)
+            
+        Returns:
+            Parsed data as bytearray
+        """
+        result = bytearray()
+        
+        # State variables for parsing
+        state = {
+            'last_ch': 0,
+            'last_char': 0,
+            'day_stamp': True,
+            'last_ta': 0,
+            'last_tb': 0,
+            'h': 0,
+            'd': 0,
+            'm': 0,
+            'y': 0
+        }
+        
+        timestamp = config['timestamp']
+        data_format = config['data_format']
+        ts_char = config['timestamp_char']
+        time_format = config['time_format']
+        
+        # Determine time interval
+        t_interval = 0
+        if timestamp >= 50000:
+            t_interval = timestamp - 50000
+        elif timestamp > 1000:
+            t_interval = timestamp - 1000
+        elif timestamp > 2:
+            timestamp = 2
+        
+        for chunk_idx, chunk in enumerate(chunks):
+            length = self._clear_endofline(chunk)
+            if length <= 0:
+                continue
+                
+            # Remove progress byte at end
+            length -= 1
+            
+            if length <= 0:
+                continue
+                
+            parsed = self._parse_chunk(
+                chunk, length, channel, timestamp, t_interval,
+                data_format, ts_char, time_format, state
+            )
+            result.extend(parsed)
+        
+        return result
+    
+    def _parse_chunk(self, data: bytearray, length: int, channel: int,
+                     timestamp: int, t_interval: int, data_format: int,
+                     ts_char: str, time_format: int, state: dict) -> bytearray:
+        """Parse a single chunk of data"""
+        result = bytearray()
+        index = 0
+        
+        while index < length:
+            if (length - index) < 4:
+                break
+            
+            byte0 = data[index]
+            byte1 = data[index + 1]
+            byte2 = data[index + 2]
+            byte3 = data[index + 3]
+            
+            # Check if this is a timestamp marker (high bit set)
+            if byte0 & 0x80:
+                # Date/time record
+                state['h'] = byte0 & 0x7F
+                dtmp = byte1
+                mtmp = byte2
+                ytmp = byte3 + 2000
+                
+                if state['d'] != dtmp or state['m'] != mtmp or state['y'] != ytmp:
+                    state['d'] = dtmp
+                    state['m'] = mtmp
+                    state['y'] = ytmp
+                    
+                    if timestamp != 0:
+                        if len(result) > 0:
+                            result.extend(b'\r\n')
+                        date_str = f"[{ytmp}-{mtmp:02d}-{dtmp:02d}]"
+                        result.extend(date_str.encode('ascii'))
+                    
+                    state['last_ta'] = 0
+                    state['last_tb'] = 0
+                    state['last_ch'] = 0
+                    state['day_stamp'] = True
+            else:
+                # Data record
+                ch = 'B' if (byte0 & 0x40) else 'A'
+                ch_mask = 2 if ch == 'B' else 1
+                
+                minute = byte0 & 0x3F
+                data_byte = byte1
+                tu16 = byte2 | (byte3 << 8)
+                ms = tu16 & 0x3FF
+                s = (byte3 >> 2) & 0x3F
+                
+                if (channel & ch_mask):
+                    # Format time string
+                    if time_format == 0:
+                        h_str = f"{state['h']:2d}"
+                    else:
+                        if state['h'] == 0:
+                            h_str = "A12"
+                        elif state['h'] < 12:
+                            h_str = f"A{state['h']:2d}"
+                        elif state['h'] == 12:
+                            h_str = "P12"
+                        else:
+                            h_str = f"P{state['h']-12:2d}"
+                    
+                    time_str = f"{h_str}:{minute:02d}:{s:02d}.{ms:03d}"
+                    if channel == 3:
+                        time_str += ch
+                    time_str += ts_char
+                    
+                    # Decide if we need to add timestamp based on config
+                    add_time = self._should_add_timestamp(
+                        timestamp, t_interval, ch_mask, s, minute, state['h'],
+                        state, channel
+                    )
+                    
+                    if add_time:
+                        result.extend(b'\r\n')
+                        result.extend(time_str.encode('ascii'))
+                    
+                    # Add the data byte
+                    if data_format == 1:
+                        # Hex format
+                        result.extend(ts_char.encode('ascii'))
+                        result.extend(f"{data_byte:x}".encode('ascii'))
+                    else:
+                        # ASCII format
+                        if data_byte < 32:
+                            result.extend(f"<{data_byte}>".encode('ascii'))
+                        else:
+                            result.append(data_byte)
+                    
+                    state['day_stamp'] = False
+                
+                state['last_ch'] = ch_mask
+                state['last_char'] = data_byte
+            
+            index += 4
+        
+        return result
+    
+    def _should_add_timestamp(self, timestamp: int, t_interval: int,
+                             ch_mask: int, s: int, minute: int, h: int,
+                             state: dict, channel: int) -> bool:
+        """Determine if timestamp should be added based on configuration"""
+        if timestamp == 1:
+            return True
+        
+        if timestamp >= 50000:
+            if timestamp < 50256:
+                if t_interval == state['last_char']:
+                    return True
+        elif timestamp == 2 or t_interval > 0:
+            t = s + 60 * minute + 3600 * h
+            should_add = False
+            
+            if state['last_ch'] != ch_mask:
+                should_add = True
+            if t_interval > 0 and channel != 3:
+                should_add = False
+            
+            if t_interval > 0:
+                t_last = state['last_ta'] if ch_mask == 1 else state['last_tb']
+                if (t - t_last) > t_interval:
+                    should_add = True
+            
+            if should_add:
+                if channel == 3:
+                    state['last_ta'] = t
+                    state['last_tb'] = t
+                elif ch_mask == 1:
+                    state['last_ta'] = t
+                else:
+                    state['last_tb'] = t
+                return True
+        
+        return False
+    
+    def download_via_pages(self, output_file: str = None, decode_controls: bool = True) -> Union[bytes, str]:
+        """
+        Download data by fetching pages (like the preview does).
+        This bypasses the date range issue entirely.
+        
+        Args:
+            output_file: Optional filename to save to
+            decode_controls: If True, decode <13>, <10> etc. to actual control characters
+            
+        Returns:
+            Parsed log data as bytes or string (if decoded)
+        """
+        print("Getting configuration...")
+        config = self.get_config()
+        print(f"Config: {config}")
+        
+        all_data = bytearray()
+        
+        # Get first page
+        print("\nFetching first page...")
+        url = f"{self.base_url}/page.xml?Page=0"
+        response = self.session.get(url, timeout=10)
+        response.raise_for_status()
+        
+        first_page = bytearray(response.content)
+        print(f"First page: {len(first_page)} bytes")
+        
+        if len(first_page) > 4:
+            all_data.extend(first_page)
+        
+        # Get last page to see total size
+        print("Fetching last page...")
+        url = f"{self.base_url}/page.xml?Page=1"
+        response = self.session.get(url, timeout=10)
+        response.raise_for_status()
+        
+        last_page = bytearray(response.content)
+        print(f"Last page: {len(last_page)} bytes")
+        
+        # Now keep getting next pages until we get back to the last page
+        print("\nFetching all pages...")
+        current_page = first_page
+        page_count = 1
+        max_pages = 1000  # Safety limit
+        
+        while page_count < max_pages:
+            url = f"{self.base_url}/page.xml?Page=3"  # 3 = next page
+            response = self.session.get(url, timeout=10)
+            response.raise_for_status()
+            
+            next_page = bytearray(response.content)
+            
+            # Check if we've reached the end (data repeats)
+            if next_page == current_page or next_page == last_page:
+                print(f"Reached end after {page_count} pages")
+                break
+            
+            if len(next_page) > 4:
+                all_data.extend(next_page)
+                page_count += 1
+                if page_count % 10 == 0:
+                    print(f"Fetched {page_count} pages, {len(all_data)} bytes total...")
+            
+            current_page = next_page
+        
+        print(f"\nTotal raw data collected: {len(all_data)} bytes from {page_count} pages")
+        
+        # Parse the data
+        print("Parsing data...")
+        file_mode = config['file_mode']
+        
+        # Treat all_data as a single chunk
+        chunks = [all_data]
+        
+        if file_mode == 2:
+            # Separate files for channel A and B
+            data_a = self.parse_log_data(chunks, config, channel=1)
+            data_b = self.parse_log_data(chunks, config, channel=2)
+            
+            # Decode control characters if requested
+            if decode_controls:
+                data_a_decoded = self.decode_control_characters(data_a)
+                data_b_decoded = self.decode_control_characters(data_b)
+                
+                if output_file:
+                    with open(f"{output_file}_A.txt", 'w', encoding='utf-8') as f:
+                        f.write(data_a_decoded)
+                    with open(f"{output_file}_B.txt", 'w', encoding='utf-8') as f:
+                        f.write(data_b_decoded)
+                    print(f"\nSaved decoded data to {output_file}_A.txt and {output_file}_B.txt")
+                
+                return data_a_decoded, data_b_decoded
+            else:
+                if output_file:
+                    with open(f"{output_file}_A.txt", 'wb') as f:
+                        f.write(data_a)
+                    with open(f"{output_file}_B.txt", 'wb') as f:
+                        f.write(data_b)
+                    print(f"\nSaved raw data to {output_file}_A.txt and {output_file}_B.txt")
+                
+                return data_a, data_b
+        else:
+            # Combined file
+            data = self.parse_log_data(chunks, config, channel=3)
+            
+            # Decode control characters if requested
+            if decode_controls:
+                data_decoded = self.decode_control_characters(data)
+                
+                if output_file:
+                    with open(f"{output_file}.txt", 'w', encoding='utf-8') as f:
+                        f.write(data_decoded)
+                    print(f"\nSaved {len(data_decoded)} characters to {output_file}.txt")
+                
+                return data_decoded
+            else:
+                if output_file:
+                    with open(f"{output_file}.txt", 'wb') as f:
+                        f.write(data)
+                    print(f"\nSaved {len(data)} bytes to {output_file}.txt")
+                
+                return data
+
+
+# Usage example
+if __name__ == "__main__":
+    downloader = RSLoggerDownloader("http://rslogger")
+    
+    print("Downloading via page-by-page method...")
+    print("="*60 + "\n")
+    
+    data = downloader.download_via_pages(
+        output_file="rslogger_data",
+        decode_controls=True  # This will decode <13>, <10> etc.
+    )
+    
+    if data and len(data) > 0:
+        print("\n" + "="*60)
+        print("Download complete!")
+        print("="*60)
+        print(f"\nFirst 1000 characters:")
+        print(data[:1000])
+    else:
+        print("\nNo data was downloaded.")
\ No newline at end of file
diff --git a/main.py b/main.py
index 6d219fb..d7cf280 100644
--- a/main.py
+++ b/main.py
@@ -5,14 +5,408 @@ from tkinter import filedialog, messagebox
 import subprocess
 import os
 from datetime import datetime
-import shutil
 import platform
+import requests
+from typing import List, Union
 try:
     from openpyxl import load_workbook
     XLSX_AVAILABLE = True
 except ImportError:
     XLSX_AVAILABLE = False
 
+# RSLogger Downloader Classes
+class RSLoggerDownloader:
+    def __init__(self, base_url: str):
+        """
+        Initialize downloader for RS Logger device
+        
+        Args:
+            base_url: Base URL like "http://rslogger" or "http://192.168.1.100"
+        """
+        self.base_url = base_url.rstrip('/')
+        self.session = requests.Session()
+        
+    def get_config(self) -> dict:
+        """Get logger configuration parameters"""
+        url = f"{self.base_url}/logc.xml"
+        response = self.session.get(url, timeout=5)
+        response.raise_for_status()
+        
+        parts = response.text.split('#')
+        config = {
+            'date_from': parts[0],
+            'date_to': parts[1],
+            'timestamp': int(parts[2]),
+            'file_mode': int(parts[3]),
+            'data_format': int(parts[4]),
+            'timestamp_char': chr(int(parts[5])),
+            'time_format': int(parts[6])
+        }
+        
+        return config
+    
+    def _get_progress(self, data: bytearray) -> int:
+        """Extract progress percentage from end of data"""
+        length = len(data)
+        while length >= 2 and data[length-1] == 10 and data[length-2] == 13:
+            length -= 2
+        
+        if length > 0:
+            return data[length - 1]
+        return 0
+    
+    def _clear_endofline(self, data: bytearray) -> int:
+        """Remove trailing carriage returns and get data length"""
+        length = len(data)
+        while length >= 2 and data[length-1] == 10 and data[length-2] == 13:
+            length -= 2
+        return length
+    
+    def decode_control_characters(self, data: bytes) -> str:
+        """
+        Decode the <13>, <10>, etc. control character sequences back to actual characters.
+        
+        Args:
+            data: Raw bytes with <NN> sequences
+            
+        Returns:
+            String with control characters properly decoded
+        """
+        # Convert bytes to string
+        text = data.decode('ascii', errors='replace')
+        
+        # Replace <NN> patterns with actual characters
+        def replace_control(match):
+            code = int(match.group(1))
+            return chr(code)
+        
+        # Match <digits> pattern and replace with the actual character
+        decoded = re.sub(r'<(\d+)>', replace_control, text)
+        
+        return decoded
+    
+    def parse_log_data(self, chunks: List[bytearray], config: dict, channel: int = 3) -> bytearray:
+        """
+        Parse raw log data chunks into readable format
+        
+        Args:
+            chunks: List of raw data chunks
+            config: Configuration dictionary from get_config()
+            channel: Channel to parse (1=A, 2=B, 3=both)
+            
+        Returns:
+            Parsed data as bytearray
+        """
+        result = bytearray()
+        
+        # State variables for parsing
+        state = {
+            'last_ch': 0,
+            'last_char': 0,
+            'day_stamp': True,
+            'last_ta': 0,
+            'last_tb': 0,
+            'h': 0,
+            'd': 0,
+            'm': 0,
+            'y': 0
+        }
+        
+        timestamp = config['timestamp']
+        data_format = config['data_format']
+        ts_char = config['timestamp_char']
+        time_format = config['time_format']
+        
+        # Determine time interval
+        t_interval = 0
+        if timestamp >= 50000:
+            t_interval = timestamp - 50000
+        elif timestamp > 1000:
+            t_interval = timestamp - 1000
+        elif timestamp > 2:
+            timestamp = 2
+        
+        for chunk_idx, chunk in enumerate(chunks):
+            length = self._clear_endofline(chunk)
+            if length <= 0:
+                continue
+                
+            # Remove progress byte at end
+            length -= 1
+            
+            if length <= 0:
+                continue
+                
+            parsed = self._parse_chunk(
+                chunk, length, channel, timestamp, t_interval,
+                data_format, ts_char, time_format, state
+            )
+            result.extend(parsed)
+        
+        return result
+    
+    def _parse_chunk(self, data: bytearray, length: int, channel: int,
+                     timestamp: int, t_interval: int, data_format: int,
+                     ts_char: str, time_format: int, state: dict) -> bytearray:
+        """Parse a single chunk of data"""
+        result = bytearray()
+        index = 0
+        
+        while index < length:
+            if (length - index) < 4:
+                break
+            
+            byte0 = data[index]
+            byte1 = data[index + 1]
+            byte2 = data[index + 2]
+            byte3 = data[index + 3]
+            
+            # Check if this is a timestamp marker (high bit set)
+            if byte0 & 0x80:
+                # Date/time record
+                state['h'] = byte0 & 0x7F
+                dtmp = byte1
+                mtmp = byte2
+                ytmp = byte3 + 2000
+                
+                if state['d'] != dtmp or state['m'] != mtmp or state['y'] != ytmp:
+                    state['d'] = dtmp
+                    state['m'] = mtmp
+                    state['y'] = ytmp
+                    
+                    if timestamp != 0:
+                        if len(result) > 0:
+                            result.extend(b'\r\n')
+                        date_str = f"[{ytmp}-{mtmp:02d}-{dtmp:02d}]"
+                        result.extend(date_str.encode('ascii'))
+                    
+                    state['last_ta'] = 0
+                    state['last_tb'] = 0
+                    state['last_ch'] = 0
+                    state['day_stamp'] = True
+            else:
+                # Data record
+                ch = 'B' if (byte0 & 0x40) else 'A'
+                ch_mask = 2 if ch == 'B' else 1
+                
+                minute = byte0 & 0x3F
+                data_byte = byte1
+                tu16 = byte2 | (byte3 << 8)
+                ms = tu16 & 0x3FF
+                s = (byte3 >> 2) & 0x3F
+                
+                if (channel & ch_mask):
+                    # Format time string
+                    if time_format == 0:
+                        h_str = f"{state['h']:2d}"
+                    else:
+                        if state['h'] == 0:
+                            h_str = "A12"
+                        elif state['h'] < 12:
+                            h_str = f"A{state['h']:2d}"
+                        elif state['h'] == 12:
+                            h_str = "P12"
+                        else:
+                            h_str = f"P{state['h']-12:2d}"
+                    
+                    time_str = f"{h_str}:{minute:02d}:{s:02d}.{ms:03d}"
+                    if channel == 3:
+                        time_str += ch
+                    time_str += ts_char
+                    
+                    # Decide if we need to add timestamp based on config
+                    add_time = self._should_add_timestamp(
+                        timestamp, t_interval, ch_mask, s, minute, state['h'],
+                        state, channel
+                    )
+                    
+                    if add_time:
+                        result.extend(b'\r\n')
+                        result.extend(time_str.encode('ascii'))
+                    
+                    # Add the data byte
+                    if data_format == 1:
+                        # Hex format
+                        result.extend(ts_char.encode('ascii'))
+                        result.extend(f"{data_byte:x}".encode('ascii'))
+                    else:
+                        # ASCII format
+                        if data_byte < 32:
+                            result.extend(f"<{data_byte}>".encode('ascii'))
+                        else:
+                            result.append(data_byte)
+                    
+                    state['day_stamp'] = False
+                
+                state['last_ch'] = ch_mask
+                state['last_char'] = data_byte
+            
+            index += 4
+        
+        return result
+    
+    def _should_add_timestamp(self, timestamp: int, t_interval: int,
+                             ch_mask: int, s: int, minute: int, h: int,
+                             state: dict, channel: int) -> bool:
+        """Determine if timestamp should be added based on configuration"""
+        if timestamp == 1:
+            return True
+        
+        if timestamp >= 50000:
+            if timestamp < 50256:
+                if t_interval == state['last_char']:
+                    return True
+        elif timestamp == 2 or t_interval > 0:
+            t = s + 60 * minute + 3600 * h
+            should_add = False
+            
+            if state['last_ch'] != ch_mask:
+                should_add = True
+            if t_interval > 0 and channel != 3:
+                should_add = False
+            
+            if t_interval > 0:
+                t_last = state['last_ta'] if ch_mask == 1 else state['last_tb']
+                if (t - t_last) > t_interval:
+                    should_add = True
+            
+            if should_add:
+                if channel == 3:
+                    state['last_ta'] = t
+                    state['last_tb'] = t
+                elif ch_mask == 1:
+                    state['last_ta'] = t
+                else:
+                    state['last_tb'] = t
+                return True
+        
+        return False
+    
+    def download_via_pages(self, output_file: str = None, decode_controls: bool = True) -> Union[bytes, str]:
+        """
+        Download data by fetching pages (like the preview does).
+        This bypasses the date range issue entirely.
+        
+        Args:
+            output_file: Optional filename to save to
+            decode_controls: If True, decode <13>, <10> etc. to actual control characters
+            
+        Returns:
+            Parsed log data as bytes or string (if decoded)
+        """
+        print("Getting configuration...")
+        config = self.get_config()
+        print(f"Config: {config}")
+        
+        all_data = bytearray()
+        
+        # Get first page
+        print("\nFetching first page...")
+        url = f"{self.base_url}/page.xml?Page=0"
+        response = self.session.get(url, timeout=10)
+        response.raise_for_status()
+        
+        first_page = bytearray(response.content)
+        print(f"First page: {len(first_page)} bytes")
+        
+        if len(first_page) > 4:
+            all_data.extend(first_page)
+        
+        # Get last page to see total size
+        print("Fetching last page...")
+        url = f"{self.base_url}/page.xml?Page=1"
+        response = self.session.get(url, timeout=10)
+        response.raise_for_status()
+        
+        last_page = bytearray(response.content)
+        print(f"Last page: {len(last_page)} bytes")
+        
+        # Now keep getting next pages until we get back to the last page
+        print("\nFetching all pages...")
+        current_page = first_page
+        page_count = 1
+        max_pages = 1000  # Safety limit
+        
+        while page_count < max_pages:
+            url = f"{self.base_url}/page.xml?Page=3"  # 3 = next page
+            response = self.session.get(url, timeout=10)
+            response.raise_for_status()
+            
+            next_page = bytearray(response.content)
+            
+            # Check if we've reached the end (data repeats)
+            if next_page == current_page or next_page == last_page:
+                print(f"Reached end after {page_count} pages")
+                break
+            
+            if len(next_page) > 4:
+                all_data.extend(next_page)
+                page_count += 1
+                if page_count % 10 == 0:
+                    print(f"Fetched {page_count} pages, {len(all_data)} bytes total...")
+            
+            current_page = next_page
+        
+        print(f"\nTotal raw data collected: {len(all_data)} bytes from {page_count} pages")
+        
+        # Parse the data
+        print("Parsing data...")
+        file_mode = config['file_mode']
+        
+        # Treat all_data as a single chunk
+        chunks = [all_data]
+        
+        if file_mode == 2:
+            # Separate files for channel A and B
+            data_a = self.parse_log_data(chunks, config, channel=1)
+            data_b = self.parse_log_data(chunks, config, channel=2)
+            
+            # Decode control characters if requested
+            if decode_controls:
+                data_a_decoded = self.decode_control_characters(data_a)
+                data_b_decoded = self.decode_control_characters(data_b)
+                
+                if output_file:
+                    with open(f"{output_file}_A.txt", 'w', encoding='utf-8') as f:
+                        f.write(data_a_decoded)
+                    with open(f"{output_file}_B.txt", 'w', encoding='utf-8') as f:
+                        f.write(data_b_decoded)
+                    print(f"\nSaved decoded data to {output_file}_A.txt and {output_file}_B.txt")
+                
+                return data_a_decoded, data_b_decoded
+            else:
+                if output_file:
+                    with open(f"{output_file}_A.txt", 'wb') as f:
+                        f.write(data_a)
+                    with open(f"{output_file}_B.txt", 'wb') as f:
+                        f.write(data_b)
+                    print(f"\nSaved raw data to {output_file}_A.txt and {output_file}_B.txt")
+                
+                return data_a, data_b
+        else:
+            # Combined file
+            data = self.parse_log_data(chunks, config, channel=3)
+            
+            # Decode control characters if requested
+            if decode_controls:
+                data_decoded = self.decode_control_characters(data)
+                
+                if output_file:
+                    with open(f"{output_file}.txt", 'w', encoding='utf-8') as f:
+                        f.write(data_decoded)
+                    print(f"\nSaved {len(data_decoded)} characters to {output_file}.txt")
+                
+                return data_decoded
+            else:
+                if output_file:
+                    with open(f"{output_file}.txt", 'wb') as f:
+                        f.write(data)
+                    print(f"\nSaved {len(data)} bytes to {output_file}.txt")
+                
+                return data
+
+
+# Log parsing and conversion functions
 def parse_logs(log_text):
     lines = log_text.splitlines()
     if lines and '=~' in lines[0]:
@@ -39,7 +433,7 @@ def parse_logs(log_text):
                     try:
                         dt = datetime.strptime(ts_line, '%I:%M %p %m/%d/%y')
                         excel_ts = dt.strftime('%m/%d/%Y %I:%M %p')
-                        pairs.append((weight, units, excel_ts))
+                        pairs.append((weight, units, excel_ts, dt))
                         print((weight, units, excel_ts))
                     except ValueError:
                         i += 1
@@ -52,35 +446,143 @@ def parse_logs(log_text):
     
     return pairs
 
+def remove_duplicates(pairs):
+    """Remove duplicate entries based on weight (within 20) and timestamp (within 1 minute)
+    Returns list of tuples where each tuple contains all the duplicate entries"""
+    if not pairs:
+        return []
+    
+    # Group entries that are duplicates
+    deduplicated = []
+    i = 0
+    
+    while i < len(pairs):
+        weight, units, excel_ts, dt = pairs[i]
+        duplicate_group = [(weight, units, excel_ts)]
+        
+        # Look ahead for duplicates
+        j = i + 1
+        while j < len(pairs):
+            next_weight, next_units, next_excel_ts, next_dt = pairs[j]
+            
+            # Check if it's a duplicate:
+            # - Weight within 20
+            # - Timestamp within 1 minute
+            weight_diff = abs(weight - next_weight)
+            time_diff = abs((dt - next_dt).total_seconds())
+            
+            if weight_diff <= 20 and time_diff <= 60:
+                # It's a duplicate, add to group
+                duplicate_group.append((next_weight, next_units, next_excel_ts))
+                j += 1
+            else:
+                break
+        
+        # Add the group as a tuple
+        deduplicated.append(tuple(duplicate_group))
+        i = j if j > i + 1 else i + 1
+    
+    return deduplicated
+
 def write_csv1(pairs, filename):
+    """Write sequential CSV with duplicates pushed to the right"""
     with open(filename, 'w', newline='') as f:
         writer = csv.writer(f)
-        writer.writerow(['WEIGHT', 'UNITS', 'TIME'])
-        for weight, units, timestamp in pairs:
-            writer.writerow([weight, units, timestamp])
+        
+        # Find max number of duplicates to determine column count
+        max_dups = max(len(group) for group in pairs)
+        
+        # Create headers: WEIGHT, UNITS, TIME repeated for each duplicate
+        headers = []
+        for i in range(max_dups):
+            suffix = f"_{i+1}" if i > 0 else ""
+            headers.extend([f'WEIGHT{suffix}', f'UNITS{suffix}', f'TIME{suffix}'])
+        writer.writerow(headers)
+        
+        # Write data rows
+        for group in pairs:
+            row = []
+            for weight, units, timestamp in group:
+                row.extend([weight, units, timestamp])
+            # Pad with empty strings if this group has fewer duplicates than max
+            while len(row) < max_dups * 3:
+                row.append('')
+            writer.writerow(row)
 
 def write_csv2(pairs, filename):
+    """Write joined CSV with duplicates pushed to the right"""
     with open(filename, 'w', newline='') as f:
         writer = csv.writer(f)
-        writer.writerow(['GROSS_WT', 'TARE_WT', 'NET_WT', 'GROSS_T', 'TARE_T', 'GROSS_UNITS', 'TARE_UNITS', 'NET_UNITS'])
+        
+        # Find max number of duplicates to determine column count
+        max_dups = max(len(group) for group in pairs) if pairs else 1
+        
+        # Create headers for gross and tare, repeated for duplicates
+        headers = []
+        for i in range(max_dups):
+            suffix = f"_{i+1}" if i > 0 else ""
+            headers.extend([f'GROSS_WT{suffix}', f'GROSS_UNITS{suffix}', f'GROSS_T{suffix}'])
+        for i in range(max_dups):
+            suffix = f"_{i+1}" if i > 0 else ""
+            headers.extend([f'TARE_WT{suffix}', f'TARE_UNITS{suffix}', f'TARE_T{suffix}'])
+        # Add NET columns at the end
+        for i in range(max_dups):
+            suffix = f"_{i+1}" if i > 0 else ""
+            headers.extend([f'NET_WT{suffix}', f'NET_UNITS{suffix}'])
+        
+        writer.writerow(headers)
+        
+        # Process pairs (gross/tare)
         for j in range(0, len(pairs), 2):
+            row = []
+            
+            # Write all GROSS entries
+            if j < len(pairs):
+                gross_group = pairs[j]
+                for weight, units, timestamp in gross_group:
+                    row.extend([weight, units, timestamp])
+                # Pad gross to max_dups
+                while len(row) < max_dups * 3:
+                    row.append('')
+            
+            # Write all TARE entries
             if j + 1 < len(pairs):
-                gross_weight, gross_units, gross_time = pairs[j]
-                tare_weight, tare_units, tare_time = pairs[j + 1]
-                net = gross_weight - tare_weight
-
-                net_units = tare_units
-                if (tare_units != gross_units):
-                    net_units = 'MISMATCH'
-                    net = 'UNIT MISMATCH'
-
-                writer.writerow([gross_weight, tare_weight, net, gross_time, tare_time, gross_units, tare_units, net_units])
-        if (len(pairs) % 2): # if odd number of items
-            gross_weight, gross_units, gross_time = pairs[-1]
-            writer.writerow([gross_weight, '', '', gross_time, '', gross_units, '', ''])
+                tare_group = pairs[j + 1]
+                for weight, units, timestamp in tare_group:
+                    row.extend([weight, units, timestamp])
+                # Pad tare to max_dups
+                while len(row) < max_dups * 6:
+                    row.append('')
+                
+                # Calculate NET for each duplicate pair
+                gross_group = pairs[j]
+                for k in range(max_dups):
+                    if k < len(gross_group) and k < len(tare_group):
+                        gross_weight = gross_group[k][0]
+                        gross_units = gross_group[k][1]
+                        tare_weight = tare_group[k][0]
+                        tare_units = tare_group[k][1]
+                        
+                        if gross_units == tare_units:
+                            net = gross_weight - tare_weight
+                            net_units = tare_units
+                        else:
+                            net = 'UNIT MISMATCH'
+                            net_units = 'MISMATCH'
+                        row.extend([net, net_units])
+                    else:
+                        row.extend(['', ''])
+            else:
+                # Odd number of items, pad tare and net
+                while len(row) < max_dups * 6:
+                    row.append('')
+                for k in range(max_dups):
+                    row.extend(['', ''])
+            
+            writer.writerow(row)
 
 def write_xlsx(pairs, output_filename, template_path='template.xlsx'):
-    """Write sequential data to XLSX file using template"""
+    """Write sequential data to XLSX file using template with duplicates pushed to the right"""
     if not XLSX_AVAILABLE:
         raise ImportError("openpyxl is required for XLSX export. Install with: pip install openpyxl")
     
@@ -102,11 +604,26 @@ def write_xlsx(pairs, output_filename, template_path='template.xlsx'):
     if ws.max_row > 1:
         ws.delete_rows(2, ws.max_row - 1)
     
-    # Write new data starting from row 2
-    for row_idx, (weight, units, timestamp) in enumerate(pairs, start=2):
-        ws.cell(row=row_idx, column=1, value=weight)
-        ws.cell(row=row_idx, column=2, value=units)
-        ws.cell(row=row_idx, column=3, value=timestamp)
+    # Find max number of duplicates
+    max_dups = max(len(group) for group in pairs) if pairs else 1
+    
+    # Update headers if needed (row 1)
+    col = 1
+    for i in range(max_dups):
+        suffix = f"_{i+1}" if i > 0 else ""
+        ws.cell(row=1, column=col, value=f'WEIGHT{suffix}')
+        ws.cell(row=1, column=col+1, value=f'UNITS{suffix}')
+        ws.cell(row=1, column=col+2, value=f'TIME{suffix}')
+        col += 3
+    
+    # Write data starting from row 2
+    for row_idx, group in enumerate(pairs, start=2):
+        col = 1
+        for weight, units, timestamp in group:
+            ws.cell(row=row_idx, column=col, value=weight)
+            ws.cell(row=row_idx, column=col+1, value=units)
+            ws.cell(row=row_idx, column=col+2, value=timestamp)
+            col += 3
     
     # Set COMBINED as the active sheet (default sheet when opened)
     if 'COMBINED' in wb.sheetnames:
@@ -149,17 +666,15 @@ def run_update_script():
     except Exception as e:
         messagebox.showerror("Error", f"Failed to run update.sh: {str(e)}")
 
-def select_input_file():
-    filename = filedialog.askopenfilename(filetypes=[("Text files", "*.txt"), ("All files", "*.*")])
-    if filename:
-        input_file_var.set(filename)
-
-def process_files():
-    input_file = input_file_var.get()
+def convert_local_file():
+    """Convert a local file selected by the user"""
+    input_file = filedialog.askopenfilename(
+        title="Select Log File to Convert",
+        filetypes=[("Text files", "*.txt"), ("All files", "*.*")]
+    )
     
     if not input_file:
-        messagebox.showerror("Error", "Please select an input file.")
-        return
+        return  # User cancelled
     
     generate_csv = csv_var.get()
     generate_xlsx = xlsx_var.get()
@@ -182,6 +697,9 @@ def process_files():
             log_text = f.read()
         pairs = parse_logs(log_text)
         
+        # Remove duplicates
+        pairs = remove_duplicates(pairs)
+        
         # Generate CSV files if checked
         if generate_csv:
             try:
@@ -222,20 +740,104 @@ def process_files():
     except Exception as e:
         messagebox.showerror("Error", f"An error occurred: {str(e)}")
 
-root = tk.Tk()
-root.title("Log to CSV Converter")
-root.geometry("500x200")
+def download_and_convert():
+    """Download from RS Logger and convert"""
+    # Ask for destination file
+    output_file = filedialog.asksaveasfilename(
+        title="Save Downloaded Log As",
+        defaultextension=".txt",
+        filetypes=[("Text files", "*.txt"), ("All files", "*.*")]
+    )
+    
+    if not output_file:
+        return  # User cancelled
+    
+    generate_csv = csv_var.get()
+    generate_xlsx = xlsx_var.get()
+    
+    if not generate_csv and not generate_xlsx:
+        messagebox.showerror("Error", "Please select at least one output format (CSV or XLSX).")
+        return
+    
+    try:
+        # Download from RS Logger
+        messagebox.showinfo("Downloading", "Connecting to RS Logger at http://rslogger\nThis may take a moment...")
+        
+        downloader = RSLoggerDownloader("http://rslogger")
+        log_text = downloader.download_via_pages(
+            output_file=os.path.splitext(output_file)[0],
+            decode_controls=True
+        )
+        
+        if not log_text:
+            messagebox.showerror("Error", "No data was downloaded from RS Logger")
+            return
+        
+        # Now convert the downloaded data
+        base = os.path.splitext(output_file)[0]
+        output_file1 = f"{base}.sequential.csv"
+        output_file2 = f"{base}.joined.csv"
+        output_xlsx = f"{base}.xlsx"
+        
+        generated_files = [f"{base}.txt"]  # The downloaded txt file
+        error_messages = []
+        
+        pairs = parse_logs(log_text)
+        
+        # Remove duplicates
+        pairs = remove_duplicates(pairs)
+        
+        # Generate CSV files if checked
+        if generate_csv:
+            try:
+                write_csv1(pairs, output_file1)
+                generated_files.append(output_file1)
+                write_csv2(pairs, output_file2)
+                generated_files.append(output_file2)
+            except Exception as e:
+                error_messages.append(f"CSV export failed: {str(e)}")
+        
+        # Generate XLSX file if checked
+        if generate_xlsx:
+            try:
+                write_xlsx(pairs, output_xlsx)
+                generated_files.append(output_xlsx)
+            except ImportError as e:
+                error_messages.append(f"XLSX export skipped: {str(e)}")
+            except Exception as e:
+                error_messages.append(f"XLSX export failed: {str(e)}")
+        
+        # Build success message
+        if generated_files:
+            files_list = "\n".join(generated_files)
+            error_info = ""
+            if error_messages:
+                error_info = "\n\nWarnings:\n" + "\n".join(error_messages)
+            
+            # Custom dialog with "Show the files" button
+            response = messagebox.askquestion("Success", 
+                f"Downloaded and converted!\n\nFiles generated:\n{files_list}{error_info}\n\nShow the files?",
+                icon='info')
+            
+            if response == 'yes':
+                show_files_in_explorer(generated_files)
+        else:
+            messagebox.showerror("Error", "No files were generated.\n\n" + "\n".join(error_messages))
+            
+    except Exception as e:
+        messagebox.showerror("Error", f"Download failed: {str(e)}")
+
+# GUI Setup
+root = tk.Tk()
+root.title("RS Logger Converter")
+root.geometry("500x220")
 
-input_file_var = tk.StringVar()
 csv_var = tk.BooleanVar(value=False)  # CSV unchecked by default
 xlsx_var = tk.BooleanVar(value=True)  # XLSX checked by default
 
-# Input file selection
-input_frame = tk.Frame(root)
-input_frame.pack(pady=5, padx=10, fill='x')
-tk.Label(input_frame, text="Select Input Log File:").pack(side='left')
-tk.Entry(input_frame, textvariable=input_file_var, width=40).pack(side='left', padx=5)
-tk.Button(input_frame, text="Browse Input", bg="#2196F3", command=select_input_file).pack(side='left')
+# Title label
+title_label = tk.Label(root, text="RS Logger Data Converter", font=("Arial", 16, "bold"))
+title_label.pack(pady=10)
 
 # Output format checkboxes
 format_frame = tk.Frame(root)
@@ -244,10 +846,16 @@ tk.Label(format_frame, text="Output Formats:").pack(side='left')
 tk.Checkbutton(format_frame, text="CSV", variable=csv_var).pack(side='left', padx=10)
 tk.Checkbutton(format_frame, text="XLSX", variable=xlsx_var).pack(side='left', padx=10)
 
-# Convert button
-tk.Button(root, text="CONVERT", command=process_files, font=("Arial", 14), relief="raised", bg="#4CAF50", fg="white").pack(pady=10, padx=10, fill='x')
+# Convert local file button
+tk.Button(root, text="CONVERT LOCAL FILE", command=convert_local_file, 
+          font=("Arial", 12), relief="raised", bg="#2196F3", fg="white").pack(pady=5, padx=10, fill='x')
+
+# Download and convert button
+tk.Button(root, text="DOWNLOAD FROM RS LOGGER", command=download_and_convert, 
+          font=("Arial", 12), relief="raised", bg="#4CAF50", fg="white").pack(pady=5, padx=10, fill='x')
 
 # Update script button
-tk.Button(root, text="Update this Application", command=run_update_script, font=("Arial", 12), relief="raised").pack(pady=5, padx=10, fill='x')
+tk.Button(root, text="Update this Application", command=run_update_script, 
+          font=("Arial", 10), relief="raised").pack(pady=5, padx=10, fill='x')
 
 root.mainloop()
\ No newline at end of file