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data blocks

2 articles tagged “data blocks”.

Flat vector diagram of a Siemens S7-1200 PLC with global and instance data block icons showing retentive memory and re-initialization arrows in teal and amber
tia portalsiemens s7data blocks

TIA Portal DB Retain and Re-Initialization Explained

Learn how TIA Portal data block retain settings and re-initialization work, why they trip up experienced engineers, and how to get predictable behavior on every power cycle.

Aug 7, 2026 · 9 min read

Flat vector diagram showing S7-1200 Global DB shared across multiple function blocks versus an Instance DB attached to a single function block in TIA Portal
siemens s7-1200tia portaldata blocks

S7-1200 Data Blocks: Global vs Instance DB Explained

Global and Instance DBs in the S7-1200 behave very differently. Learn which type to use, how memory is allocated, and how to avoid the classic commissioning mistakes.

Jul 18, 2026 · 9 min read

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