Abstract: A peripheral assembly system which can be arranged in a decentralized manner, including a basic assembly (1) and at least one expansion module. The basic assembly (1) has integrated input/output units (4, 5) of, for example, 16 or 32 bits as well as an expansion connection (7). Via the expansion connection (7), the basic assembly (1) can be expanded, in a fine-tuned manner, with expansion modules, modules having channels numbering not more than 2.

Abstract: An integrating module which can be fed back and operates recursively according to the trapezoidal rule, across which a pass-through value channel is shunted. For feeding back the module a separate feedback output is provided at which the output signal of the internal rectangle rule integrating module is available for feedback. The deviation between the output signal proper of the module and the signal at the feedback output is corrected separately outside the feedback branch. In one embodiment, the correction is brought about by a suitable adjustment of an amplifier in the channel of the input variable.