Selmo Knowledge Base

Welcome to the technical documentation for Selmo.

🔷 Selmo – Model-based machine logic with system, structure and safety

Selmo stands for Sequence Logic Modelling – an innovative standard for modeling and controlling machine processes. At its core Selmo is not program code, but a formal behavior model for machines: logical, deterministic, testable and documentable.

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✅ What is Selmo?

Selmo describes machines in a fixed structure:

scssCopyEditPLANT
└── Hardware Zones (HWZ)
    └── Sequences (SEQ)
        └── Zones (signals: Input, Output, Mem)

Each Sequence represents a logical process step – with states, signals, parameters and safety behavior. The result is a fully modeled sequence, which from a single model:

• PLC code,

• HMI display,

• diagnostics,

• and technical documentation

are generated automatically.

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🎯 What does Selmo achieve?

Area	Effect / Benefit
Documentation	Automatically generated: signal list, safety matrix, sequence diagram
Functional safety	States, zones and safety reactions are deterministic and verifiable
Legal certainty	Model corresponds to requirements from ISO 12100, 13849, IEC 62061 etc.
Standards compliance	All operating modes, reset rules, safety behavior can be represented and CE-capable
Project structure	Each SEQ is a self-contained process step with validation and export
Transparency	Operators, service personnel and inspectors can see at any time: What is happening? What is missing? What is allowed?

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📋 Supporting tools

• Checklists for project preparation, model review, audit

• Project plan template (structured process, sequence-based)

• Export formats (CSV, IEC code, HMI data, change log)

• Knowledge base with examples, glossary, standards references

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🧾 Conclusion

Selmo is not just a technology – it is an end-to-end behavior model for machines, that:

✅ Clearly describes processes ✅ Makes risks manageable ✅ Makes functions verifiable ✅ and generates documentation, that stands up to standards and laws

📌 Selmo leads to quality, safety and trust – for manufacturers, operators and inspectors alike.