diff --git a/software/tools/modbus_tool/modbus_tool.py b/software/tools/modbus_tool/modbus_tool.py
index fce2423..97e2dff 100755
--- a/software/tools/modbus_tool/modbus_tool.py
+++ b/software/tools/modbus_tool/modbus_tool.py
@@ -65,7 +65,7 @@ def poll_status(slave_id, interval):
 
         new_data = {}
         try:
-            if not client.is_connected():
+            if not client.is_socket_open():
                 reconnect_attempts += 1
                 if reconnect_attempts >= max_reconnect_attempts:
                     new_data["error"] = f"Failed to reconnect after {max_reconnect_attempts} attempts. Exiting."
@@ -286,9 +286,9 @@ def main_menu(stdscr, slave_id):
             stdscr.addstr(h // 2 + 1, w // 2 - 25, msg.ljust(50))
         else:
             with status_lock: current_data = status_data.copy()
+            bold, normal = curses.color_pair(1) | curses.A_BOLD, curses.color_pair(1)
             if current_data.get("error"): stdscr.addstr(0, 0, current_data["error"], curses.color_pair(3) | curses.A_BOLD)
             else:
-                bold, normal = curses.color_pair(1) | curses.A_BOLD, curses.color_pair(1)
                 col1, col2, col3, col4 = 2, 30, 58, 88
                 stdscr.addstr(1, col1, "State:", bold); stdscr.addstr(1, col1 + 18, str(current_data.get('state', 'N/A')), normal)
                 stdscr.addstr(2, col1, "Movement:", bold); stdscr.addstr(2, col1 + 18, str(current_data.get('movement', 'N/A')), normal)