A method for replacing an existing control device in an automation system by a new control device, the existing and new control devices being configured to receive measured values from automation components of the automation system, process the received measured values and generate control values for at least one of at least one automation component of the automation components and other automation components of the automation system, the method comprising the steps of:
- receiving, by the existing control device, measured values and outputting control values from the existing control device to the automation components to test the new control device during operation of the existing control device;
- transmitting the measured values and control values wirelessly to the new control device;
- comparing control values generated by the new control device with the control values generated by the existing control device;
- and
- outputting the control values generated by the new control device to the automation components after the test instead of the control values generated by the existing control device.