For example, only the full license of RSLogix 5000 will have access to languages beyond Ladder Logic. Furthermore, depending on the PLC platform of choice, specific languages may come at a premium or not be available at all. As a competent PLC programmer, it’s essential to be aware of these options to troubleshoot existing code, utilize the right tool for the job, and have a different perspective on how problems may be solved. Each one of these languages has advantages, weaknesses, and best use cases. The International Electrotechnical Commission 61131-3 outlines 5 different PLC Programming languages: ladder logic, structured text, function block diagrams, sequential function charts, and instruction lists. The 5 most popular types of PLC programming languages of 2020 are:
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