Assembly with at least two redundant analog input units for measurement current

At least two redundant analog input units (1, 2) for a measurement current (I) have analog inputs (3, 4) which are connected in parallel and on which voltage measuring devices (8, 19) directly lie inorder to convert the respective applied voltage into a digital measurement value (16, 30). The analog input units (1, 2) are connected together via a communication connection (29) and determine one analog input unit (e.g. 1) which switches its analog input (3) to the low-resistance state in order to measure and convert the measurement current (I) into a digital measurement value (16) while the analog input (4) in each remaining analog input unit (2) is switched to a high-resistance state. The current-measuring analog input unit (1) outputs its generated measurement value (16) and transmit sameto the at least one other analog input unit (2), which outputs said measurement value instead of its own measurement value (30), via the communication connection (29). In order to detect errors, in particular in order to dete