1. SCADA DATA ACQUISTION MODULE
Group 6
Project Guide: M. Srinivas

2. AGENDA
Project Definition and Scope
Functionality
Protocol Design

3. Project Definition & Scope
Gets the data from a field device (RTU) in digital form (bytes)
A convenient protocol agreed upon by both RTU and MTU

4. Project Definition & Scope
MTU I N T E R F A C I N T E R F A C
RTU
Serial Port Comm
Common Protocol
(Master terminal unit)
(Remote terminal unit)

5. Components 2 Main components RTU MTU
RTU Simulator – To generate various analog and digital values
RTU Interface – Communicates with the MTU through a common protocol
MTU
MTU Interface – Communicates i.e. receives data and sends control commands to RTU

6. Functionalities of MTU
Initialization of RTU
Requests
Analog
Digital
Health check
Control commands
Time stamping

7. Protocol Request Packet from MTU Start Byte Request Types 1- Analog
2- Contacts
3– Health
4- Ack for Cont
RTU number
Request
CRC

8. Protocol (cont…) Response to Analog Request Start Byte RTU no Length.
Analog 14
Time Stamp(2bytes)
CRC

9. Protocol (cont…) Response to Digital Request Start Byte RTU no Length
Contact add (1–15)
Status (0/1)
Time Stamp (2 bytes) .
Contact add (1–15)
Status (0/1)
Time Stamp (2 bytes)
CRC

10. Protocol (cont…)
Response to Health Request
Start Byte
RTU number
CRC

11. Protocol (cont…) Control Packet from MTU Select Start Byte
Request Types
5- Control com
RTU number
Request
Contact Addr
CRC

12. Protocol (cont…) Check Response Start Byte RTU no Length of Bytes
Contact add (1–15)
Status (0/1)
CRC

13. Protocol (cont…) Control Packet from MTU - Execute Start Byte
Request Types
6- Execute
RTU number
Request
Contact Addr
Status (0/1)
CRC

14. Summary Design of Protocol that supports
Requests – Analog & Digital values
Health Check
Control Commands
Time Stamping

15. Thank you Group Members: Aravind M (aravind_m@students)
Hemanth Chowdary
Sandeep Reddy M
Sireesh Reddy K
Venkat Ram