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6 articles tagged “siemens”.

Flat vector diagram of a Siemens S7-1500 PLC with organization blocks arranged by priority showing OB1 cyclic, OB30 timed interrupt and OB82 diagnostic interrupt layers
siemenstia portalorganization blocks

Siemens TIA Portal OB Types: When to Use Each

Organization Blocks control when your Siemens PLC code runs. Learn the OB types, priorities, and exactly when to use OB1, OB30, OB82 and more in TIA Portal.

Aug 8, 2026 · 9 min read

Flat vector comparison diagram of a Siemens S7-1200 compact PLC on the left and an S7-1500 modular PLC on the right with performance callout badges
siemenss7-1200s7-1500

S7-1200 vs S7-1500: Which Siemens PLC to Choose

S7-1200 vs S7-1500: compare CPU speed, memory, motion control, safety integration, PROFINET ports and real project cost so you choose the right Siemens PLC.

Jul 17, 2026 · 8 min read

S7-1200 PLC connected to a TIA Portal structured text SCL editor on a laptop, flat vector diagram
siemensstructured texttia portal

Structured Text in TIA Portal: A Practical Guide

TIA Portal's SCL editor lets you write structured text on S7-1200 and S7-1500 PLCs. Here's the syntax, real examples, and when to use it instead of ladder.

Jul 9, 2026 · 7 min read

S7-1200 PLC connected to TIA Portal laptop showing first program setup
siemenss7-1200tia portal

S7-1200 First Program in TIA Portal: Step by Step

Build your first Siemens S7-1200 program in TIA Portal from scratch. CPU selection, hardware config, tag table, ladder rung, and online download all covered.

Jul 8, 2026 · 8 min read

TIA Portal data block types diagram showing Global DB, Instance DB, Array DB and optimized access on S7-1500
siemenstia portalstructured text

TIA Portal Data Blocks: DB Types and When to Use Each

TIA Portal data blocks come in four distinct types. Knowing which to use and how optimized access changes everything will save you hours of debugging.

Jul 8, 2026 · 8 min read

HMI programming in TIA Portal showing screen layouts connected to PLC tags with alarm indicators
hmi programmingtia portalsiemens

HMI Programming in TIA Portal: A Practical Guide

Learn HMI programming in TIA Portal: how to build screens, connect PLC tags, configure alarms and wire up navigation buttons that actually work in production.

Jun 28, 2026 · 9 min read

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