Program structure and diagnostic aspects in applications applied in PLCs

摘要

The main task of control program loaded in any PLC is to ensure proper functionality of the designed machine or echnological line. rom the diagnositc and maintenance point of view the same program is to ensoure fault detection, machine status check and machine rstart to be done with ease. Such aspects are connected with many items, one of the most important is prgram structure. Intention of tbe authros is to present some remarks regarding different program structures, programming aspects, which support users and miantenance to detect and cover faults and stoppages.