The application of PLC in the remote control system

PLC in the control system of the remote application newmaker welcome to e hall exhibition hall 3 PLC PLC programmable controller, PLC programming cable. 。 。 This paper introduces the FBs series PLC in the application of remote wireless control system. This device is mainly divided into two parts, one set of PLC in the control of pump start stop inoue, read the equipment's electricity meter, inoue A/B/C phase current value and the voltage value. The second is the remote control room of a PLC through GPRS in yi tang technology - DTU module to realize the two PLC local - Remote online communication, written to the control and monitoring the status of PLC controller inoue and reading value, and connect a touch screen for customer operation and monitoring. Keywords: FBs series PLC, remote wireless, read the meters, GPRS - DTU。 This remote control system is introduced in this paper, the industry is for shiyao group subsidiary a control scheme of the design. Mainly supporting GPRS - DTU product realizes remote data sharing between PLC and PLC. So as to achieve the purpose of the wireless data to control and read remote monitoring. Second, the customer needs ( 1) At least 2 - customers can control in the control room 3 km inoue two pump start and stop. （ 2) Customers can touch screen screen monitor in the control room to the two pumps the amount of electricity meter, and inoue A/B/C phase current, voltage value. （ 3) Customers can use save traffic patterns. When using, can open communication button, start to spend flow for data exchange; When not in use close communications, stop data exchange to save traffic. 3 3, the control system design. 1 hardware configuration host: two FBs - 10 mar communication extension board: FBs - CB5的边后卫, CB55 touch screen: Unicon series 7 inch touch screen, HU070S- 00) Wireless communication module: yi tang MD - GPRS - 309克 DTU3. 2 control scheme design: set of PLC to the control room is given priority to PLC, set inoue PLC to PLC station, in this way, so convenient for customers to save traffic. Customers can through the touch screen control in the control room is for data exchange between the two PLC to save traffic. The main function of PLC to write and read from the stand of PLC data, and communication with PC touch screen. Wilson read from the stand the function of the PLC for the total electricity meter, three phase current A/B/C voltage value, and the master station to realize data exchange, PLC control from standing by A command from the main action, through the PLC of the feedback state transfer from station to master station, to monitor the running status of equipment. 3. 3 control scheme design: 3. 4 the software design by FUN150 instruction to realize data sharing between master-slave station PLC, the start-stop control communication by M0, to conserve the flow. Four, equipment debugging, 1) Debugging yi tang GPRS - DTU data parameters of communication. （ 2) A master-slave station between PLC data sharing. （ 3) From the PLC controller station, through the FUN151 instruction mode 2 Wilson meters ( Follow the standard DTL - 645 protocol) The total power, each phase voltage and current value. Five, the application experience through the commissioning of the project, in combination with PLC and GPRS - yi tang DTU module, with the remote control for the purpose of customer needs. PLC powerful communication instruction FUN150 with FUN151 coupled with two expand communication board, easily reached the customers' expectations.
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