Method for the secure configuration of automation systems

1. A method for configuring a control device of an automation system, the control device being configured to operate at least one automation device of the automation system to perform a task, the method comprising:

detecting a local access token via an interface of the control device;

temporarily modifying, in response to detecting the local access token, at least one parameter of the control device that configures a data connection of the control device; and

while the at least one parameter is modified, at least one of (i) configuring, using an external device, the control device via the data connection and (ii) performing, using the external device, a maintenance procedure on the control device via the data connection; and

resetting the modified at least one parameter in response to one of (i) the local access token no longer being detected or (ii) a predetermined time period having elapsed since the at least one parameter was modified.

2. The method according to claim 1 , the modifying the at least one parameter comprising:

changing the at least one parameter from a first value that prevents communication between the control device and a network to a second value that allows the communication between the control device and the network.

3. The method according to claim 1 further comprising:

receiving at least one data element from the local access token; and

selecting at least one stored value for the at least one parameter based on the received data element, the at least one parameter being modified using the selected at least one stored value.

4. The method according to claim 1 further comprising:

receiving at least one value for the at least one parameter from the local access token; and

modifying the at least one parameter based on the received at least one value.

5. The method according to claim 1 , the resetting further comprising:

resetting the modified at least one parameter in response to the local access token no longer being detected; and

resetting the modified at least one parameter in response to the predetermined time period having elapsed since the at least one parameter was changed.

6. The method according to claim 1 further comprising:

performing an authentication of the local access token, the least one parameter being left unmodified in response to the authentication failing.

7. The method according to claim 1 , the modifying the at least one parameter comprising at least one of:

assigning an IP address for the control device;

defining filter rules for at least one of received packet data and sent packet data; and

changing access permissions for the control device.

8. An automation system comprising:

at least one automation device configured to perform a task;

a control device configured to operate the at least one automation device to perform the task;

an interface configured to detect a local access token;

a configurable connection between the control device and at least one network;

an access module connected to the interface and the control device, the access module being configured to (i) detect the local access token via the interface, (ii) temporarily modify, in response to detecting the local access token, at least one parameter of the control device that configures the configurable connection between the control device and the at least one network, and (iii) reset the modified at least one parameter in response to one of (i) the local access token is no longer being detected or (ii) a predetermined time period having elapsed since the at least one parameter was modified; and

an external device configured to, while the at least one parameter is modified, at least one of (i) configure the control device via the data connection and (ii) perform a maintenance procedure on the control device via the data connection.

9. The automation system according to claim 8 , wherein the interface is one of a wired interface and a wireless interface.

10. The automation system according to claim 8 , further comprising:

the local access token configured to one of unidirectionally communicate with the interface and bidirectionally communicate with the interface, the local access token being one of (i) a USB memory element, (ii) a flash memory card, (iii) an active RFID tag, (iv) a passive RFID tag, (v) an NFC tag, (vi) a mobile device, and (vii) a smart card.

11. A processing unit for configuring a control device of an automation system, the control device being configured to operate at least one automation device of the automation system to perform a task, the processing unit configured to:

detect a local access token via an interface of the control device; and

temporarily modify, in response to detecting the local access token, at least one parameter of the control device that configures a data connection of the control device; and

reset the modified at least one parameter in response to one of (i) the local access token is no longer being detected or (ii) a predetermined time period having elapsed since the at least one parameter was modified,

wherein, while the at least one parameter is modified, an external device at least one of (i) configures the control device via the data connection and (ii) performs a maintenance procedure on the control device via the data connection.

12. The processing unit according to claim 11 , wherein the processing unit is configured to execute a computer program to perform the detection of the local access token and the modification of the at least one parameter.

13. The processing unit according to claim 11 , wherein the computer program is stored on a machine-readable storage medium.