Programmable logic controllers (PLCs) for distributed fault-tolerant management information systems

摘要

The invention relates to the field of computing, and more particularly to systems automate process control of industrial plants, and can be used as a display device as the control device as a recording device and data storage, with the possibility of duplication of communication channels for the remote control subject. Utility model contains in its composition a microcontroller and memory that enable you to control the program, non-volatile Compact Flash memory card to change the management and conduct of business protocol algorithm, galvanically isolated from internal circuits Ethernet interfaces Power (2 channel), CAN (2 channels), RS- 485 (2 channels), 1-wire (2 channels) for connecting the sensors, computers and other PLC duplicate the organization of communication channels and providing a "hot" backup internal real time clock for determining the time of occurrence, a temperature sensor, as well as analog input / output lines, digital lines, I / O load break diagnostic functions, insulation against + U, -U, short circuit and overheating, overvoltage protection, as well as a display unit to display the status of mechanisms , sensors and the PLC itself. The algorithm of the programmable controller is loaded with a Compact Flash memory card, depending on the requirements of a specific control system.