I work as a solution engineer at Talend, and I’ve worked on IOT / SCADA integration. While you’ve not supplied much detail, to me this sounds like a data integration problem.
If that’s the right problem, then your choices are to build or buy an IOT platform solution. An IOT platform covers ingest from various IOT sources, processing, analytics, and publish to various target systems. https://www.talend.com/blog/2017/04/11/simplify-iot-platform-talend/
Here’s more on how Talend’s Data Fabric works for IOT...
Talend brings it all together in an end-to-end integration platform that combines IoT connectivity (AMQP, MQTT); high-speed, reliable messaging (Apache Kafka, Amazon Kinesis, Talend ESB); and high-speed big data processing (Apache Spark).
https://www.talend.com/solutions/information-technology/internet-of-things-real-time/