• P-ISSN 0974-6846 E-ISSN 0974-5645

Indian Journal of Science and Technology


Indian Journal of Science and Technology

Year: 2018, Volume: 11, Issue: 1, Pages: 1-12

Original Article

Control and Monitoring of Electrical Variables of a Level Process using Modbus RTU-TCP/IP Industrial Communication


Background/Objectives: To develop an open protocol industrial communication network that allows the supervision, control and data acquisition of a frequency converter and an energy meter, which are connected to a pumping and level control system; this process will be carried out from a local, remote control - Human Machine Interface (HMI) and from the web, using Modbus RTU - TCP/IP. Methods: The implementation and configuration of equipment and devices of the Communication Network was carried out according to the three main layers that make up an Industrial OSI system, such as: the two-tier environment and connectivity in TCP/IP as well as in the Scada System RTU, controllers, meters, converters and field elements; the Configuration and Linking stage, both in TCP and serial and finally for the Application stage for both the Scada system and for the HMI. Findings: The configuration of the devices in TCP/IP used a 24 mask, while in RTU the identifier used was Id 15; the PC_System for the Scada System, the Delta display for the HMI, the PLC S7-1200 for programming the control system, as well as the Sentron Pac 3200 energy meter, monitor and control variables such as line and motor frequency, voltages and currents between lines, power and energy consumption of the industrial system and at the same time it will be possible to generate a record (Web, Server), of data in an Excel format, from any electronic device with internet access, entering through the IP address of the PLC previously configured with a user name and password that allows total access to the readings registered by the PLC. Applications/Improvements: In supervision, control and data acquisition systems of industrial processes of any type of variable, with controllers and field devices, both with TCP and RTU connectivity, of multiple brands of recognition or not in the market, improving the control and monitoring in real time, for the analysis, diagnosis and decision making, both local and remote, by maintenance, operation and management personnel.

Keywords: Frequency Inverter, Human Machine Interface (HMI), Modbus TCP/RTU, Sentron PAC 3200, Web Server


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