PLC Programming in the TIA Portal — structured, tested, documented
Siemens controller programs from a standardized block library — maintainable for the next maintenance technician, not just for the author.
- structured programming to standard
- IEC 61131
- structured programming to standard
- proven basic functions, across projects
- 1 library
- proven basic functions, across projects
- symbol tables & block docs included
- Docs
- symbol tables & block docs included
Whether a new plant, an expansion or a migration: your PLC program is built in the TIA Portal as a structured architecture — meaningful symbolic names, a proven block library, every function tested before commissioning.
The program as the source of truth
For existing plants the work begins in the legacy program: what runs in the controller is the plant's reality — not what is on the plan. Even hard cases are everyday practice, such as reconstructing symbolic names and program structure from an online extract with no source project, comments or documentation.
Rebuild instead of a 1:1 carry-over
A program that has been changed by changing hands for 15 years deserves more than a migration wizard when it moves over:
- Dead blocks, duplicate flags and hard-coded values are cleaned up rather than preserved.
- Structured data types, symbolic addressing and the integrated diagnostics of the S7-1500/S7-1200 are genuinely put to use.
- The proven plant logic is preserved — what is new is the structure beneath it.
Standard block library
Motors, valves, interlocks and fault messages are built from a proven, standardized library — uniformly structured, uniformly diagnosable, operated the same way in every project. The result reads as documented and behaves like the plant.
Tested before it goes to the plant
Every basic function and every sequence is checked in a dry run against defined scenarios — normal operation, fault cases, limit values. For the complete system, the end-to-end test follows in the test setup on real target hardware.
Related services
Control System Retrofit
Migrate S5, S7-300 or S7-400 to S7-1500/S7-1200 — often without rebuilding the control cabinet.
Control System Retrofit: Migrate S5, S7-300 or S7-400 to S7-1500/S7-1200 — often without rebuilding the control cabinet.Commissioning & End-to-End Test
The complete system tested beforehand — on the hardware that will later work at the plant.
Commissioning & End-to-End Test: The complete system tested beforehand — on the hardware that will later work at the plant.HMI & Visualization (WinCC Unified)
Plant schematic, SVG device symbols, individual pop-ups and web access — to a screen concept.
HMI & Visualization (WinCC Unified): Plant schematic, SVG device symbols, individual pop-ups and web access — to a screen concept.Frequently Asked Questions
Do you also take on existing TIA projects?
Yes — expansions, troubleshooting and cleanup work in existing TIA projects are part of everyday business. Before larger interventions, a program analysis provides clarity on structure, legacy issues and risks.
What exactly does the block library give me?
Uniform basic functions mean: the same diagnostics, the same operating behavior and the same documentation in every project. Your maintenance team does not have to learn individual handwriting — and expansions build on what is proven.
Do you also program S5 and STEP 7 Classic?
I read, analyze and migrate legacy programs from the S5 and STEP 7 Classic worlds — new developments are built in the TIA Portal. For legacy plants the goal is usually migration to the S7-1500/S7-1200 rather than maintaining phased-out systems.
Discuss your PLC project
New plant, expansion or migration — briefly describe your project and you get an honest assessment of the effort and approach.
✓ Non-binding initial consultation ✓ Response time < 24h on business days