diff --git a/scripts/network.gd b/scripts/network.gd
index 1a4d7127..adc4ba52 100644
--- a/scripts/network.gd
+++ b/scripts/network.gd
@@ -64,7 +64,10 @@ class Modbus extends ModbusClientRtu:
         var params = settings.UnitProfiles[unit_name][2]
         thread_stop()
         close()
-        open(port, params[1], params[0], params[2], params[3], params[4])
+        var rc = open(port, params[0], params[1], params[2], params[3], params[4])
+        if rc != Error.OK:
+            push_error('ошибка: \"%s\" - не открывается' % port)
+        set_indication_timeout(params[5])
         thread_run()