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Axunit

2 articles

How to Write Unit Tests in SIMATIC AX — A Step-by-Step Guide for TIA Portal Engineers

March 27, 2026 — A hands-on guide to writing unit tests in SIMATIC AX using AxUnit. Walks through the anatomy of a test file, the reset pattern, assert methods, running tests, and what to test versus what to leave for commissioning.

Unit Testing in SIMATIC AX — I Proved My PLC Code Works Without a PLC

March 25, 2026 — What unit testing is, why TIA Portal engineers should care, and how SIMATIC AX's built-in AxUnit framework lets you verify PLC code automatically — no hardware needed.