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plc addressing

2 articles tagged “plc addressing”.

Flat vector diagram comparing PLC direct addressing, indirect addressing with an array index pointer, and symbolic tag addressing across three memory layout panels
plc addressingladder logicplc programming basics

PLC Addressing Modes: Direct, Indirect and Symbolic

Direct, indirect and symbolic addressing each work differently inside a PLC. This guide breaks down how each mode works, when to use it, and the gotchas that catch engineers off guard.

Jul 30, 2026 · 9 min read

HMI tag linking diagram showing PLC address mapping between touchscreen and PLC rack
hmi programmingtag mappingplc addressing

HMI Tag Linking: Mapping PLC Addresses Correctly

HMI tag linking connects your screen objects to real PLC memory. Get the data type, polling rate or address wrong and your display lies to you. Here is how to do it right.

Jul 11, 2026 · 7 min read

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