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Architecture and integration

How IKNAL connects with what you already have.

IKNAL Gateway installs on your plant network, reads your equipment and delivers every value to the systems you already use, on site or in your cloud. On every sheet, every box states its input, its output, the protocol and the physical medium.

01Reference sheet

From instrument to your systems, with no risk to the process.

The Gateway reads the field equipment and publishes over OPC UA and MQTT. Your SCADA, your historian or your broker receive the values; the field equipment never receives orders through the Gateway.

Scroll sideways to see the whole sheet.

Reference architecture · IKNAL Gateway on the plant networkFIELD · ZONE 0PLANT NETWORK · ZONE 1YOUR SYSTEMS · ON SITE OR IN YOUR CLOUD4-20 mA HARTModbus TCP · 502Ethernet Cu Cat 6Modbus RTURS-485OPC UA · 4840Ethernet Cu Cat 6OPC UA · 4840Ethernet Cu Cat 6MQTT 5 · 8883mutual TLSoutbound onlySite-dependentMQTT 5 · Sparkplug BTransmittersOUTFIT · PIT · TIT4-20 mA HARTFlow computersINfield signals4-20 mA HARTOUTModbus TCP · 502Ethernet Cu Cat 6RS-485 metersINfield signalsSite-dependentOUTModbus RTURS-485PLCINfield signalsDiscrete · 4-20 mA HARTOUTOPC UA · 4840Ethernet Cu Cat 6IKNAL Gateway· More than 10 industrial protocols· Store & forwardINModbus TCP · 502Ethernet Cu Cat 6INModbus RTURS-485INOPC UA · 4840Ethernet Cu Cat 6OUTOPC UA server · 4840Ethernet Cu Cat 6 · plant NICOUTMQTT 5 · mutual TLS · 8883Site-dependent · outbound onlyADMHTTP · 8099this machine onlyYour SCADA, historian or MESOPC UA client with a trusted certificateINOPC UA · 4840Ethernet Cu Cat 6MQTT broker · unified namespaceINMQTT 5 · mutual TLS · 8883Site-dependent · inbound onlyOUTMQTT 5 · Sparkplug B · 8883Site-dependentYour applications and analyticshistorian · MES · dashboardsINMQTT 5 · Sparkplug B · 8883Site-dependent
Sheet A-01 · Every box states its input, its output, the protocol, the port and the physical medium. Where the medium depends on the installation, it says «site-dependent».
Physical medium
  • Ethernet Cu Cat 6
  • RS-485
  • 4-20 mA HART · Discrete
  • Site-dependent
Show the same information as a table
ElementInput (protocol · port · medium)Output (protocol · port · medium)
Transmitters—FIT · PIT · TIT · 4-20 mA HART
Flow computersfield signals · 4-20 mA HARTModbus TCP · 502 · Ethernet Cu Cat 6
RS-485 metersfield signals · Site-dependentModbus RTU · RS-485
PLCfield signals · Discrete · 4-20 mA HARTOPC UA · 4840 · Ethernet Cu Cat 6
IKNAL GatewayModbus TCP · 502 · Ethernet Cu Cat 6 | Modbus RTU · RS-485 | OPC UA · 4840 · Ethernet Cu Cat 6OPC UA server · 4840 · Ethernet Cu Cat 6 · plant NIC | MQTT 5 · mutual TLS · 8883 · Site-dependent · outbound only | HTTP · 8099 · this machine only
Your SCADA, historian or MESOPC UA · 4840 · Ethernet Cu Cat 6—
MQTT broker · unified namespaceMQTT 5 · mutual TLS · 8883 · Site-dependent · inbound onlyMQTT 5 · Sparkplug B · 8883 · Site-dependent
Your applications and analyticsMQTT 5 · Sparkplug B · 8883 · Site-dependent—

02Integration patterns

Three ways to connect a site.

D-01

Plant network

The Gateway and your SCADA on the same network, with no internet. Your SCADA reads the values from the Gateway's OPC UA server, with a trusted certificate.

SITE · Isolated network · no internetLicence activated on siteYour SCADA, historian or MESINOPC UA · 4840Ethernet Cu Cat 6IKNAL GatewayOUTOPC UA · 4840Ethernet Cu Cat 6 · plant NIC
  • No internet connection
  • Licence activated on site
  • Signed updates that you install, from USB too
D-02

Unified namespace

The Gateway publishes every value to your MQTT broker, as JSON or Sparkplug B, for your historian, your MES or your analytics.

SITEMQTT brokerINMQTT 5 · mutual TLS · 8883Ethernet Cu Cat 6IKNAL GatewayOUTMQTT 5 · mutual TLS · 8883Ethernet Cu Cat 6
  • MQTT with mutual TLS
  • Topics per site and device
  • Publishes on change, with a maximum interval
D-03

Remote sites

At wells, pumping stations or distant stations, the Gateway publishes to your control centre over a link that only leaves the site. If the link drops, the values wait on the computer.

CONTROL CENTRE OR CLOUDREMOTE SITEMQTT brokerINMQTT 5 · mutual TLS · 8883Site-dependent · inbound onlyIKNAL GatewayOUTMQTT 5 · mutual TLS · 8883Site-dependent · outbound only
  • Outbound connections only
  • Store & forward, in order
  • Medium per site: fibre, radio or cellular

03Data flow

One value, from sensor to evidence.

  1. 01

    Measure

    The transmitter delivers its signal to the flow computer, the meter or the PLC: 4-20 mA HART, pulses or discrete.

  2. 02

    Read

    IKNAL Gateway reads the device over its protocol and gives every value its quality and its timestamp.

  3. 03

    Publish

    The Gateway publishes over OPC UA, MQTT or Sparkplug B. If the destination does not answer, the value waits on the computer.

  4. 04

    Supervise

    IKNAL SCADA evaluates limits and ISA-18.2 alarms and shows every value with its quality.

  5. 05

    Historise

    IKNAL Historian keeps every value with its quality and summarises it per minute and per hour.

  6. 06

    Prove

    IKNAL Medición and IKNAL Cumplimiento turn the data into records, reports and traceable evidence.

04Links on the sheet

Protocol and medium of every link.

FromToProtocol · portPhysical medium
Meters and flow computersIKNAL GatewayModbus TCP · 502Ethernet Cu Cat 6
Meters on a serial lineIKNAL GatewayModbus RTURS-485
PLCIKNAL GatewayOPC UA · 4840Ethernet Cu Cat 6
TransmittersFlow computer4-20 mA HART4-20 mA HART
IKNAL GatewayYour SCADA, historian or MESOPC UA · 4840Ethernet Cu Cat 6
IKNAL GatewayMQTT brokerMQTT 5 · mutual TLS · 8883 · outbound onlySite-dependent
MQTT brokerYour applications and analyticsMQTT 5 · Sparkplug B · 8883Site-dependent
Administrator's browserIKNAL GatewayHTTP · 8099This computer only

05Integration with what you already have

IKNAL does not make you change your SCADA or your historian.

With your SCADA or historian

The Gateway publishes over OPC UA, MQTT and Sparkplug B: any client or broker that speaks those standards receives your values.

From another communications server

Bring your tags over from KEPServerEX, checked row by row with a preview of the changes before they are applied.

With your systems

Scheduled reports by email and webhook from IKNAL SCADA.

Next step

Let's look at your operation with your own equipment.

Tell us what you have in the field and what you need to see. We will prepare a demo around a case like yours and, if we move forward, a written proposal.

Request a demoHow we work with you