FIELD: electronic commutation systems. SUBSTANCE: each method involves setting of design threshold value of function request messages received, reception of function request messages, augmentation of message counter readings by one, computation of message counter value, comparison of computed value with threshold, and execution of requested function in case computed value is equal to or lower than design threshold; then processor unit is informed about result of work done; if computed value of message counter is higher than design threshold, processor is informed about impossibility of processing and overflow alarm signal is produced. EFFECT: provision for controlling overflow caused by many messages received at a time for primitive program. 2 cl, 4 dwg, 1 tbl
