diff --git a/scenes/pribor-externals/externals.gd b/scenes/pribor-externals/externals.gd
index 13575b0..2f708c6 100644
--- a/scenes/pribor-externals/externals.gd
+++ b/scenes/pribor-externals/externals.gd
@@ -3,6 +3,9 @@ class_name pribor_externals extends 'res://scenes/контроль/прибор.
 var UnitPanel = load('res://scenes/контроль/элемент-ю.tscn')
 
 
+func on_line_changed(unit_inst: unit.Unit, unit_panel: Control): unit_panel.state = unit_inst.online
+
+
 func _ready() -> void:
     if Engine.is_editor_hint():
         return
@@ -11,7 +14,4 @@ func _ready() -> void:
         unit_panel.fname = unit_inst.name
         $grid.add_child(unit_panel)
         unit_inst.connect('line_changed', on_line_changed.bind(unit_panel))
-
-
-func on_line_changed(unit_inst: unit.Unit, unit_panel):
-    unit_panel.state = unit_inst.online
+        on_line_changed(unit_inst, unit_panel)
diff --git a/scripts/sch3.gd b/scripts/sch3.gd
index 095695e..b43c97c 100644
--- a/scripts/sch3.gd
+++ b/scripts/sch3.gd
@@ -36,7 +36,7 @@ class Sch3 extends unit.Unit:
         mbc.close()
 
     func try_connect() -> bool:
-        var rc = mbc.open(port, params[0], params[1], params[2], params[3], params[4])
+        var rc: = mbc.open(port, params[0], params[1], params[2], params[3], params[4])
         if rc != Error.OK:  # TODO: убрать это отсюда (неуместный вывод сообщения)
             if not reconnect_failed:
                 push_error('%s: невозможно открыть \"%s\" %s' % [name, port, params])