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Arctic IEC-104 Gateway

Arctic IEC-104 Gateway. Jari Lahti, CTO. IEC-104 OVER GPRS. IEC-101 OVER RS-232. Arctic IEC-104 Gateway. IEC 60870-5-104 to IEC 60870-5-101 communication gateway Conversion between IEC-104 and IEC-101 Local IEC-101 polling of Class 1 and Class 2 events

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Arctic IEC-104 Gateway

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  1. Arctic IEC-104 Gateway Jari Lahti, CTO

  2. IEC-104 OVER GPRS IEC-101 OVER RS-232 Arctic IEC-104 Gateway • IEC 60870-5-104 to IEC 60870-5-101 communication gateway • Conversion between IEC-104 and IEC-101 • Local IEC-101 polling of Class 1 and Class 2 events • One RS-232 and one RS-232/422/485 port up to 460800 bps • Internal Ethernet and GSM/GPRS wireless networkinterface • Secure communication with internal VPN and firewall • GPRS operator independent static IP addressing with Viola M2M Gateway • Packet compression for slow-speed links • I/O extension option (=Arctic RTU) • DIN rail mounting option

  3. Viola M2M Gateway GPRS IEC-104 IEC-104 OVER SECURE VPN TUNNEL SCADA Arctic IEC-104 Gateway IEC-101 OVER RS-232 IEC-101 Devices (Feeder Controllers) Wireless Feeder Automation

  4. GPRS Antenna -FME connector Power input -6-26 VDC RS 1 (RS-232) -Console or plain data Console switch -Defines the mode of RS 1 (console or data) RS 2 (RS-232/422/485) -IEC-101 data RS 2 DIP switches -RS-232 / RS-422 / RS-485 -Full (485) / Half (422) duplex -Bias on/off -Termination on/off Ethernet -10/100 Base-T Physical Connections

  5. DIP Switches and RS2 pinout • DIP switches control the operation of RS2 • RS2 pinout (standard male DB-9) • RS2 operation in RS-232 mode (standard DTE) and in RS-422/485 mode

  6. IEC-101 Serial settings • Serial speed • 1200 • 2400 • 4800 • 9600 • 19200 • 38400 • 57600 • Data bits • 5,6,7,8 • Parity • None, Even, Odd • HW (CTS/RTS) Flow control • Yes/No

  7. Network settings • Network protocol • TCP (standard IEC-104) • UDP • Network port to listen • The TCP or UDP port the Arctic IEC-104 Gateway listens for incoming IEC-104 connections • 2404 is the standard port • Network idle timeout • If there is no communication on open connection during defined interval the Arctic IEC-104 Gateway closes the connection • New connection priority • Defines are new connections accepted if there is a connection already • Setting Yes enables new connection to have higher priority and the existing connection is closed

  8. IEC-104 Settings • TX window size (k) • how many IEC-104 packets Arctic sends to IEC-104 master before waiting acknowledgement • RX window size (w) • how many IEC-104 packets Arctic receives from IEC-104 master before sending acknowledgement • I frames TX timeout (t1) • how many seconds to wait acknowledgement from IEC-104 master • I frames RX timeout (t2) • how many seconds to wait from last received IEC-104 packet before sending acknowledgement • Link test interval (t3) • interval for sending IEC-104 link test packets • Suspended timeout • if the IEC-104 link is on suspendet state over defined timeout Arctic will close the link • Max sequence number • defines the maximum sequence number used on IEC-104 communication • Cause of transmission length • size of IEC-104 Cause of transmission field length in bytes • Common address length • size of IEC-104 Common address field length in bytes • Info object address length • size of IEC-104 Information object address field length in bytes • NOTE • (w) must be smaller than (k) (2/3 of k) • (t1) must be longer than (t2) • w, k, t1 and t2 should be same on both ends (SCADA, Arctic) of IEC-104 connection • (t3) should be smaller on Arctic than on SCADA

  9. Send when events Local IEC-101 polls Local polling of events • The Arctic IEC-104 gateway polls locally the IEC-101 device for Class 1 and Class 2 events • events are sent when they occur • no need to perform fast polling over GPRS • slow periodic link test frames can be used

  10. IEC-101 Settings • Slave link address • the link address of IEC-101 slave • Link address field length • the size of IEC-101 link address field in bytes • 1 or 2 • Event poll interval • the interval of polling Class 1 or Class 2 events from IEC-101 slave in multiple of 100 ms • Link test interval • the interval of testing IEC-101 link status in multiple of 100 ms • Keep link open • defines is the IEC-101 link kept open by Arctic even when there is no active IEC-104 connection • the events are still not polled untill the IEC-104 connection is active • Reply header timeout • timeout of waiting reply to start from IEC-101 slave • Reply end timeout • timeout of waiting reply to end from IEC-101 slave • Retry limit • how many times to retry a command to IEC-101 slave • Cause of transmission length • size of IEC-101 Cause of transmission field length in bytes • Common address length • size of IEC-101 Common address field length in bytes • Info object address length • size of IEC-101 Information object address field length in bytes

  11. ASDU Conversion • The Arctic IEC-104 Gateway supports ASDU level header length conversion • Cause of transmission length • Common address length • Information object address length • This is usually required because the header lengths typically differsbetween IEC-101 and IEC-104 • It is possible to convert also ASDU types if the implementation differs between IEC-104 master and slave

  12. ASDU Converter settings • Use ASDU converter • set Yes to allow conversion between IEC-101 and IEC-104 header field lengths • Use ASDU type replacer • set Yes to allow conversion between ASDU Original type and Applied type • Original type • original ASDU type to be searched if ASDU type replacer is enabled • Applied type • the ASDU defines is the type used to replace the original type if ASDU type replacer is enabled

  13. Packet collector • The packet collector can be used to "collect" multiple IEC-104 packets to Arctic before sending them to IEC-104 master • This decreases the amount of used GPRS data because data is sent in single packet rather than in multiple packets • single TCP/IP header instead of multiple headers

  14. Packet collector settings • Use packet collector • set yes to allow packet collector operation • Max bytes • Maximum bytes to collect before sending the packet • Max time • Maximum time to collect before sending the packet • Max packets • Maximum number of IEC-104 frames to collect before sending the packet • NOTE • If any of the triggers (Max bytes, Max time, Max packets) is reached the packet is sent

  15. IO Extension • It is possible to equip Arctic IEC-104 Gateway with I/O extension board • 8 DI • 2 DO • These I/O pins can be used as an extension of IEC-101 slave address space • single IEC-104 connection is required to control the IEC-101 slave and Arctic IO extension • Arctic sends the I/O status as spontaneous events in case of General interrogation • All IO extension information is Single-point information without time tag • It is possible to send the Input status periodically as spontaneous events • The output pins can be controlled with Single command • I/O extension board is a manufacturing option

  16. Front View 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 IO Pinout Output circuit Input circuit • NOTE • Input voltages below 2 V are detected as logic "0" • Input voltages between 5-60 V are detected as logic "1"

  17. IO Extension settings • Use IO extension board • set Yes to enable IO extension • Common address • the IEC-104 common address of IO extension board • Number of inputs • number of digital inputs used • 0-8 • Inputs start address • The information object address of first digital input on IO extension board • Number of outputs • number of digital outputs used • 0-2 • Outputs start address • The information object address of first digital output on IO extension board • Reply end timeout • timeout of waiting reply to end from IEC-101 slave • Output short pulse duration • Defines the duration in 0.1 secs of output short pulse. • Output long pulse duration • Defines the duration in 0.1 secs of output long pulse • Paired outputs • Defines are the outputs controlled individually or are they controlled as paired outputs. • Forced output function • Defines the forced operation of outputs executed regardless the actual command data. • Send input status cyclic • Defines are the input pin status information sent cyclically when the IEC-104 connection is active • Cyclic interval • Defines the time interval in 0.1 secs of sending input status cyclical message • Inputs status are sent as spontaneous events • Send input state change event • Defines does the state change of input cause sending of spontaneous event.

  18. Serial port RS1 • The serial port RS1 can be used in two modes • Console mode - access Arctic command line with serial console • Data mode - transfer plain RS-232 data over network • The RS1 mode is controlled by Console Switch on Arctic front panel • Switch position in Console mode • Switch position in Data mode • When operating the console switch always turn Arctic OFF

  19. RS 1 Serial Gateway

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