Beckhoff Sistema Library !link! <ULTIMATE ◆>

Beckhoff provides a dedicated SISTEMA library to simplify the process of evaluating safety-related control systems. This tool bridges the gap between Beckhoff's TwinSAFE hardware and the industry-standard SISTEMA software, ensuring that machine builders can easily verify compliance with international safety standards like ISO 13849-1. What is the SISTEMA Software?

to ensure you have the most current version for your safety calculations. Beckhoff Automation

Further Resources:

(Safety Integrity Software Tool for the Evaluation of Machine Applications) to calculate the Performance Level (PL) of a safety function according to DIN EN ISO 13849-1. 🛡️ Key Functions

• Function Blocks (FBs): For calculating PLr (Required Performance Level) and PL (Achieved Performance Level).
• Data Structures: Predefined data types for safety components (e.g., light curtains, emergency stops, contactors).
• Diagnostic Coverage (DC) Helpers: Modules to calculate DC based on test rates and component architectures.

Pitfall 2: Overlooking CCF (Common Cause Failure)

Problem: Engineers set CCF_Score to 0 because they don't understand the scoring table. Consequence: The PL result will be severely reduced (often PL c instead of PL e). Fix: Use the FB_Sistema_CCF_Calculator helper to score based on measures like diversity, separation, and overvoltage protection. beckhoff sistema library

1. Watch your Cycle Time Redundancy requires a deterministic cycle. If your cycle jitters from 2ms to 15ms, the heartbeat will time out, and you will get false failovers. Use a dedicated task with a fixed interval.

5.2 Integration with TwinSAFE

The library is not a replacement for TwinSAFE logic (which runs on EL6900 terminals). Instead, it is a validation overlay. You can pass parameters from TwinSAFE safety inputs (via ADS communication) into the Tc3_Sistema function block running on the standard PLC core. Beckhoff provides a dedicated SISTEMA library to simplify

This article was written for control systems engineers, safety professionals, and automation integrators seeking to master TwinCAT 3 functional safety. For specific applications, consult a certified functional safety engineer and refer to the latest Beckhoff documentation and IFA guidelines.