Input device for field device for acquiring e.g. temperature of gaseous medium, executes plausibility check to determine whether combination of actuated keys corresponds to impermissible input based on detection of key operation

摘要

The input device has keys (1-3) and an evaluation device (4) for detection of a key operation. The evaluation device executes plausibility check in which a determination of whether the combination of actuated keys corresponds to an impermissible input is performed upon detection of the key operation. The evaluation device displays error state based on detection of the impermissible input. An independent claim is included for method for processing of input on input device.