Industrial Automatic Control Systems and Controllers Annotation << Back Stand for Software Diagnostics of Processor Devices and Systems V.P. Shevchuk A structural model of a hardware and software stand for software diagnostics of multifunctional monitoring and control systems is proposed. An algorithm for simulating digitized values of a measured physical quantity in real time is proposed. An algorithm for the formation of random digital sequences of a measured physical quantity is proposed for the case of using a three-dimensional moving average algorithm as a preliminary filtration, and a linear homogeneous diff erential equation of the first order as a software compensator. The properties and behavior of dynamic methodological errors of simulation modeling from time quantization in the channels of transmission and processing of measurement information are analyzed. The influence of the dynamic methodological error from time quantization on the software settings of the secondary device of the stand is shown. Algorithms for calculating the loss of measuring information according to the readings of the secondary instrument of the stand are proposed. Keywords: programmable logic controller, software diagnostics, algorithm for simulation of measurement information, processor secondary device, software tuning factor. DOI: 10.25791/asu.8.2023.1453 Pp. 29-39.