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By Nigel Zeinert

IED Communications Over LAN/WAN. By Nigel Zeinert. The Principles: Reroute your COM port over a network Communicate with the serial device as if it was connected locally The COM port data is encapsulated in the network protocol Protocol ensures transparent data communication. Serial Tunnel.

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By Nigel Zeinert

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  1. IED Communications Over LAN/WAN By Nigel Zeinert

  2. The Principles: Reroute your COM port over a network Communicate with the serial device as if it was connected locally The COM port data is encapsulated in the network protocol Protocol ensures transparent data communication Serial Tunnel

  3. Corp LAN Switch / Firewall INTERNET CITRIX / VM Ware Server Ethernet Fibre Fibre Switch L90 ZC22 Serial Server 7SD511 Fibre RS232 RS485 FIBRE SEL321 REL511 LFZP

  4. The COM port is redirected via a software driver All windows based software can be redirected without the application knowing Most DOS applications can be redirected DOS redirection software is available that should redirect all DOS app’s (not tested) Redirection is transparent to the application Host = The Serial Server Location TCPPort = Port type = 30xx serial port Port number = xx18 Redirecting Software

  5. PROTECTION RELAYS RTU PLC ENERGY METERING EVENT RECORDERS DATA LOGGER SECURITY SYSTEM ANY DEVICE with a SERIAL INTERFACE Serial Devices (IED’s)

  6. RS232 RS423 RS422 RS485 Fibre Copper TYPES of SERIAL PORTS • The Serial Server allows concurrent communication to all ports • Ports can be configured • Printer port • Terminal Server • Serial port • Modem port

  7. Before you start the IED software, set the redirector to the desired IED location Start the application and connect to IED The software thinks its communicating directly with the IED, as if the relay was connected directly to the PC Making a Connection

  8. IED Connection Management • Database • IED • Type • Function • Location • Application notes • IED notes • Specific notes for the schemes • History of connections • User management • Security

  9. User Interface • The Interface must be: • Easy to use • Fast • Intuitive • Contains useful information • Help user perform their function • User editable

  10. Software • Open-source standards • Reuse existing applications • LINUX • MYSQL • APACHE • PHP • MEDIAWIKI • Software Developer • www.iedcomms.hsd.com.au

  11. IED Details • IED’s have special instructions • IED’s in different schemes have different special instructions • Launch IED application • Without any specific arguments • With specific arguments • Choice of which application • Network IED • Serial IED

  12. Demo • Questions?

  13. SPECIFICATIONS RS232 RS423 Mode of Operation SINGLE SINGLE -ENDED -ENDED Total Number of Drivers and Receivers on One Line 1 DRIVER 1 DRIVER 1 RECVR 10 RECVR Maximum Cable Length 50 FT. / 15.24 m 4000 FT. / 1219.2 m Maximum Data Rate 20kb/s 100kb/s Maximum Driver Output Voltage +/-25V +/-6V Driver Output Signal Level (Loaded Min.) Loaded +/-5V to +/-15V +/-3.6V Driver Output Signal Level (Unloaded Max) Unloaded +/-25V +/-6V Driver Load Impedance (Ohms) 3k to 7k >=450 Max. Driver Current in High Z State Power On N/A N/A Max. Driver Current in High Z State Power Off +/-6mA @ +/-2v +/-100uA Slew Rate (Max.) 30V/uS Adjustable Receiver Input Voltage Range +/-15V +/-12V Receiver Input Sensitivity +/-3V +/-200mV Receiver Input Resistance (Ohms) 3k to 7k 4k min. Specifications

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