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
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.
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
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.
For RS485 we referred: Application note[AN1063],[AN736],AN 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: