The overall flow for Node-RED is straightforward. To confirm that your tag is readable, type in For example, based on my screens, I will be able to read the data using. The tag I will be using is an internal system tag that shows the time in seconds on the system where the KEPServerEX is installed. Step 4: Add the tags that you want to send to Node-RED by clicking Add IoT Tags. In the interest of demo, here is a very unsecured set up. Step 3: Configure your REST Server accordingly. Step 2 : Key in the name of the Agent (I am using the name RESTServer) and ensure that you select the type to REST Server. Assuming that your devices is already connected to Kepware with its appropriate tags, under IoT Gateway, select add agent or right click on IoT Gateway and select New Agent: Step 1: We start by configuring KEPServer EX and creating a REST Server. Part I: Exposing the tags via a REST Server in KEPServerEX In this demo, we will use an internal system tag provided by Kepware and send that out to Twitter using Node-Red. The following diagram is an overview of the setup. Once the data is populated, we can then extract information, parse it out as we like and output into Twitter. Using Node-RED’s HTTP Request palette, we will issue HTTP GETs to Kepware’s RESTServer EX. It provides a browser-based editor that makes it easy to wire together flows using the wide range of nodes in the palette that can be deployed to its runtime in a single-click. Node-RED is a programming tool for wiring together hardware devices, APIs and online services in new and interesting ways.
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