In complex industrial processes the simplification of work is ensured using complex automation solutions. In such systems it is crucial to provide as much automated tasks as possible in order to reduce possibility of human error and ensure high level of excellence for final product. Complex automation solutions require high level of excellence in design, production and commissioning. In this paper the use of PLC application for testing single part of automated system is presented. The results of testing are described in several specific steps recorded during the actual testing. This will ensure determination of errors without connection of actual electrical machine drive.Olakšavanje rada u složenim industrijskim procesima osigurava se koriš...