Technologies Ignition Perspective 8.1 by Inductive Automation MQTT using Cirrus Link MQTT Ignition modules Modbus TCP and Modbus RTU Schneider Electric PLCs SQL databases Summary A client required a Data Center SCADA system to monitor and control multiple data halls, system alarming, redundancy, and data collection for a new
PLC Setup and Requirements The code for the PLC project is here. According to the Beckhoff documentation for their JSON functions, TwinCAT 3 build 4022 on an x86, x64 or ARM processor can support JSON development. For this post, we will be using TwinCAT 3 build 4024.32 with a VM running windows 10. For our
JSON Basics Wikipedia defines a JSON as “an open standard file format and data interchange format that uses human-readable text to store and transmit data objects consisting of attribute–value pairs and arrays (or other serializable values)” CITATION JSO23 l 1033 (JSON: Wikipedia, 2023).They're ubiquitous in the software world, but traditionally have not been utilized in
