Etica trabajo y profesion
MODBUS BASED DISTRIBUTED CONTROL SYSTEM
BY PUJARI SUJAY TOPHKHANE SAURABH KUMTHEKAR AVADHOOT
Under Guidance of Prof. Mrs. M. P. Atre
Technical Assistance W.A.K.E.
Project Category INHOUSE PROJECT
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CERTIFICATE
This is to certify that following students have satisfactorily completed their project titled ‘MODBUS BASED DISTRIBUTED CONTROL SYSTEM’, towards the fulfillment of Bachelor’s Degree in Electronics & Telecommunication Engineering.
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Kumthekar Avadhoot D. Pujari Sujay G. Tophkhane Saurabh S.
B-3073034 B-3073046 B-3073086
Prof. Mrs. M. P. Atre. Project Guide
Prof. N. P. Deshpande Head, Dept of E & TC
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ACKNOWLEDGEMENT …ver más…
Parameter monitoring SCADA 7
System will continuously monitor the temperature and stores the value in its internal memory. On receiving a Modbus command from the PC based software / Control system with specified formatted protocol will send the read value as a Modbus response. A temperature can be set through the PC based software which can send indication over Modbus at some other remote place. A 24V to 5V DC/DC Converter is used to power up the system . According to alarm Trigger Pt. Setting Buzzer & Led’s will indicate. Control over all 3 modules from module D or Master is over MODBUS-RS485.
2. LITERATURE SURVEY
To get basic knowledge about “Modbus protocol”, we referred following Web resources: 1. www.MODICON.com 2. www.wikipedia.com 3. www.google.com.
After getting used to with protocol, we started from Physical layer which tells about topology, for that we referred Application Note[AN002] from www.modicon.com,[Mazi] and [JanS] . 8
For RS232 www.maxim.com.
we
referred:
Application
note
[AN723],[AN2020]
from
For RS485 we referred: Application note[AN1063],[AN736],AN[723] from www.maxim.com. & [SLLA272B] from www.TI.com Power supply design concepts were found from [Boye]. Moving further towards upper layers, we decided to implement system modules using Atmega32 controller, which is 8-bit controller from AVR family. To study this we referred [DhanG]. Software tools used: IDE: AVRSTUDIO4, Compiler: WINAVR, Downloader: FreeIsp, Ref: