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SCADA SYSTEM, EXERCISE CHAPTER 1 PART 2, CHAPTER 5, Distillation :check:,…

- - - - large area covered
      - use public communication links
      - Usually a fast speed
      - use fibre optic wires
      - suitable for SCADA system
    - - -Use public communication links
      - -Small area covered
      - -Low Speed
      - -Uses WIFI and Ethernet cables
      - -Suitable for DCS system
  - - - Wireless
    - - WLAN is not secure and vulnerable to cyber attack
      - Environment affect quality of signal transmission
    - - Outstanding mobility
      - Connection is completely wireless
      - WLAN is more popular
    - - Cover large geographical area
- - - - Open Protocol is a communication protocol that can be included in a
        wide range of device types from any equipment vendors.
      - Example of Open Protocol
        
        ModBus
        
        protocol for transmitting information
        between electronic devices over serial lines
        
        ModBUs type
        
        Modbus Serial
        
        Modbus RTU
        
        Modbus ACSII
        
        Modbus TCP/IP
        
        Comparison
        
        DNP3
        
        Provide greater efficiency
        
        polled often for critical data
        
        Data time stamped at device when event
        occurred
        
        Built in time sync
        
        Data is stored based on point types
        
        open standard
        
        ModBUs
        
        open standard
        
        Very efficient
        
        Devices polled for registers and not based on
        data priority
        
        Data time stamped at Host machine
        
        Programming needed to add time sync
        
        Data is stored in registered based concept
      - Advantages
        
        Can be use by any devices
        
        system can be maintain
        by company rather
        
        Higher Flexibility due to higher degree of
        networking flexibility
      - Weakness
        
        Poor security due to technical information
        disclose to anyone
    - - Propriety Protocol is a communication protocol owned by single communication or individual.
      - Advantages
        
        Have specific features and capabilities
        
        All elements of devices compatible with
        each other.
      - Weakness
        
        Specific only to the vendors due to
        running on unique protocol.
        
        Licensing Fee much expensive
- - - - ii.Transmitter 3
      - iii. Transmitter 2
      - i. Control Valves 2
  - - - HMI
        
        PRINTER
  - - - ii. RTD 3
      - i. RTD 2
      - iii.Transmitter 6
      - iv. Transmitter 7
  - - - ii. Transmitter 4
      - i. Contol valve 3
  - - - ii.Transmitter 1
      - i. Control Valves 1
- - - - Smart Homes
      - Smart Societies.
      - Smart Buildings
    - - Networking systems,
      - Products and
        business partners
  - - - Combination of hardware and software
      - Interaction which is a property of several devices
      - Application and Products
        
        industrialisation
        
        Agriculture, handcrafts, wholesale and
        retail, pharmaceutical industry, medical technology,