fs (and other furnaces): fixes on interlock

- try to make interlock right
- merge status where ever possbile

frappy/ctrlby.py

@@ -82,8 +82,11 @@ class WrapControlledBy:
 
         on a FloatRange() the default value is 0
         """
-        self.self_controlled()
-        self.internal_set_target(self.parameters['target'].datatype.default)
+        zero = self.parameters['target'].datatype.default
+        try:
+            self.internal_set_target(zero)
+        except Exception as e:
+            self.target = zero
 
     def update_target(self, module, value):
         """update internal target value
@@ -94,7 +97,6 @@ class WrapControlledBy:
         override and super call, if other actions are needed
         """
         if self.controlled_by != module:
-            self.log.warning('UT %r %r', self.controlled_by, module)
             deactivate_control = self.inputCallbacks.get(self.controlled_by)
             if deactivate_control:
                 deactivate_control(module)