Abstract: A storage device for mobile provision of data at a technical installation includes a first connector for mechanical connection to a complementary mating connector, a second connector adjoining the first connector, and a housing enclosing the first connector and the second connector. The second connector can releasably receive a storage medium in a receptacle and can contact power and data connections of the storage medium when the storage medium is in the receptacle. The first connector is coupled to the second connector and, as a result of the coupling, the power and data connections of the storage medium can be contacted via the first connector. The first connector is a round plug connector with a connecting element having a circular cross-section or a heavy-duty connector.

Abstract: A safety switching device for the fail-safe disconnection of an external consumer has an internal consumer and switching elements for connecting in parallel the internal consumer with the external consumer. Read-back taps are arranged between the switching elements, a first and second pole of the external consumer, and the internal consumer. A signal processing unit includes a testing device and a memory, in which a first error pattern set is stored. The testing device is coupled to the read-back taps and executes a switching test having a minimum of three temporally-separated test intervals. In each test interval, the testing device receives a read-back signal from each read-back tap in order to generate a first test pattern. To identify a fault, the testing device matches the first test pattern with the first error pattern set.

Abstract: A storage device for mobile provision of data at a technical installation includes a first connector for mechanical connection to a complementary mating connector, a second connector adjoining the first connector, and a housing enclosing the first connector and the second connector. The second connector can releasably receive a storage medium in a receptacle and can contact power and data connections of the storage medium when the storage medium is in the receptacle. The first connector is coupled to the second connector and, as a result of the coupling, the power and data connections of the storage medium can be contacted via the first connector. The first connector is a round plug connector with a connecting element having a circular cross-section or a heavy-duty connector.

Abstract: Safety switching device for the fail-safe disconnection of an external consumer having an internal consumer and switching elements for connecting in parallel the internal consumer with the external consumer. Read-back taps are arranged between the switching elements, a first and second pole of the external consumer, and the internal consumer. A signal processing unit comprises a testing device and a memory, in which a first error pattern set is stored. The testing device is coupled to the read-back taps and executes a switching test having a minimum of three temporally-separated test intervals. In each test interval, the testing device receives a read-back signal from each read-back tap in order to generate a first test pattern. To identify a fault, the testing device matches the first test pattern with the first error pattern set.