diff --git a/cfg/kapillarheizung_cfg.py b/cfg/kapillarheizung_cfg.py
index eee22d13..18bd5b9f 100644
--- a/cfg/kapillarheizung_cfg.py
+++ b/cfg/kapillarheizung_cfg.py
@@ -79,7 +79,7 @@ Mod('Cernox',
      'frappy_psi.logo.TempSensor',
      'sensor',
      io = 'io',
-     vm_address ="VW14",
+     vm_address ="VW16",
  )
 
 Mod('T_cx',
@@ -107,7 +107,7 @@ Mod('HeaterState',
     vm_address_off = "V1246.1",
 )
 '''
-
+"""
 Mod('HeaterState',
     'frappy_psi.logo.HeaterParam',
     'heater state',
@@ -121,9 +121,9 @@ Mod('HeaterState_a',
     io = 'io',
     vm_address = "V0.0",
 )
+"""
 
 
-'''
 Mod('HeaterState',
     'frappy_psi.logo.ControlHeater',
     'heater state',
@@ -137,7 +137,6 @@ Mod('HeaterState_a',
     io = 'io',
     vm_address = "V0.0",
 )
-'''
 
 
 # currently unused:
diff --git a/frappy_psi/logo.py b/frappy_psi/logo.py
index 6824714d..dd265723 100644
--- a/frappy_psi/logo.py
+++ b/frappy_psi/logo.py
@@ -144,7 +144,6 @@ class TempSensor(Snap7Mixin, Readable):
 
 class HeaterParam(Snap7Mixin, Writable):
     vm_address = Property('VM address output', datatype= StringType())
-
     target = Parameter('Heater target', datatype = FloatRange(unit='%'))
     value = Parameter('Heater Param', datatype = FloatRange(unit='%'))
 
@@ -156,3 +155,21 @@ class HeaterParam(Snap7Mixin, Writable):
 
     def read_status(self):
         return IDLE, ''
+
+
+class ControlHeater(Snap7Mixin, Writable):
+    vm_address = Property('VM address on switch', datatype= StringType())
+    target = Parameter('Heater state', datatype = BoolType())
+    value = Parameter('Heater state', datatype = BoolType())
+
+    def read_value(self):
+        return self.get_vm_value(self.vm_address)
+
+    def write_target(self, target):
+        if (target):
+            return self.set_vm_value(self.vm_address, True)
+        else:
+            return self.set_vm_value(self.vm_address, False)
+
+    def read_status(self):
+        return IDLE, ''