Vzpostavitev komunikacije med programirljivim logičnim krmilnikom Siemens SIMATIC S7-1214 in merilnikom ISKRA MC740

STARIČ, DAVID (author), Petkovšek, Marko (mentor)

Cilj diplomskega dela je bil sestaviti merilni sistem, ki vključuje univerzalni merilnik ISKRA MC740 s serijskim izhodom in programirljivi logični krmilnik Siemens SIMATIC S7-1214. Za povezavo merilnika in krmilnika je bilo treba programirljivi logični krmilnik razširiti s komunikacijskim modulom SIEMENS CM1241, ki omogoča prenos podatkov po serijskem komunikacijskem protokolu RS485. Velik poudarek v diplomskem delu je tudi na pretvorbi merilnih rezultatov iz merilnika v ustrezen format, prilagojen okolju krmilnika. Na koncu je oblikovan še uporabniški vmesnik za prikaz osnovnih podatkov na zaslonu na dotik.

• Language: Slovenian
• Keywords: merilnik električne energije, programirljivi logični krmilnik, komunikacijski modul, protokol RS485
• Work type: Bachelor thesis/paper
• Organization: FE - Faculty of Electrical Engineering
• Year: 2022
• PID: 20.500.12556/RUL-140530
• COBISS.SI-ID: 122742019
• Publication date in RUL: 15.09.2022

Secondary language

• Language: English
• Title: Establishing communication between Siemens SIMATIC S7-1214 programmable logic controller and ISKRA MC740 electrical energy meter

Abstract

The goal of the thesis was to build a measurement sistem that includes an energy meter ISKRA MC740 with a serial output and a programmable logic controller (PLC) Siemens SIMATIC S7-1200. In order to connect the energy meter and the PLC, the PLC had to be expanded with a communication modul SIEMENS CM1241, which enables data transfer via serial RS485 communication protocol. A great emphasis in thesis is also on the measurement data conversion from the energy meter to appropriate data type, that is suitabe for the PLC enviroment. Finnaly a user interface is designed to display basic data on the touch screen.

• Keywords: energy meter, programmable logic controller, communication module, RS485 protocol