diff --git a/scripts/network.gd b/scripts/network.gd
index 7578b7ca..9979a342 100644
--- a/scripts/network.gd
+++ b/scripts/network.gd
@@ -147,6 +147,9 @@ func _ready() -> void:
     send_sockets['уарэп-яу07-3н'] = sock_unicast
     send_sockets['уарэп-яу07-3к'] = sock_unicast
 
+    var bind_serials: = []
+    var bind_modbuses: = []
+
     for unit_name in settings.UnitProfiles:
         var st = settings.UnitProfiles[unit_name]
         var proto = st[0]
@@ -176,6 +179,7 @@ func _ready() -> void:
             var unit_key = settings.get_unit_key(unit_name)
             units_modbus[unit_key] = unit_modbus
             units[unit_key] = unit_modbus
+            bind_modbuses.append([unit_modbus, unit_name])
 
         if proto in SERIAL_PROTO:
             var unit_serial = SERIAL_PROTO[proto].new(unit_name)
@@ -184,11 +188,10 @@ func _ready() -> void:
             units_serial[unit_key] = unit_serial
             units[unit_key] = unit_serial
             serials[unit_key] = serial
-            var rc = serial.try_open(on_serial_data.bind(unit_serial))
-            if rc != Error.OK:
-                log.message(log.ERROR, 'невозможно открыть %s для \"%s\"' % [serial, unit_name])
-            else:
-                log.message(log.INFO, '%s для \"%s\"' % [serial, unit_name])
+            bind_serials.append([serial, unit_serial, unit_name])
+
+    ProjectSettings.connect('settings_changed', Callable(self, '_on_settings_changed_modbus').bind(bind_modbuses))
+    ProjectSettings.connect('settings_changed', Callable(self, '_on_settings_changed_serial').bind(bind_serials))
 
     tcp_sockets.append([create_tcpsocket('уарэп-5п28'), units_tcp[settings.get_unit_key('уарэп-5п28')]])
     for key in dst_ports:
@@ -200,6 +203,28 @@ func _ready() -> void:
             u.connect('command_fail', Callable(logger_page, 'on_command_fail').bind(key))
 
 
+func _on_settings_changed_modbus(bind_modbuses: Array):
+    var external_ctl = ProjectSettings.get_setting('application/config/Внешнее управление', false)
+    for bm in bind_modbuses:
+        var unit_modbus = bm[0]
+        var unit_name = bm[1]
+
+
+func _on_settings_changed_serial(bind_serials: Array):
+    var external_ctl = ProjectSettings.get_setting('application/config/Внешнее управление', false)
+    for bs in bind_serials:
+        var serial = bs[0]
+        var unit_serial = bs[1]
+        var unit_name = bs[2]
+        serial.try_close()
+        if not external_ctl:
+            var rc = serial.try_open(on_serial_data.bind(unit_serial))
+            if rc != Error.OK:
+                log.message(log.ERROR, 'невозможно открыть %s для \"%s\"' % [serial, unit_name])
+            else:
+                log.message(log.INFO, '%s для \"%s\"' % [serial, unit_name])
+
+
 func poll_receive_udp(sock: Socket) -> bool:
     while sock.get_available_packet_count() > 0:
         var data: = sock.get_packet()