The CANopen Safety master stack brings the CANopen Safety protocol (CiA 304 / EN 50325-5) to the controlling side of a safety network. It produces and consumes Safety-Related Data Objects (SRDOs) to exchange safe process data with one or more CANopen Safety slaves — over the very same CAN bus that already carries your standard CANopen traffic.
How the CANopen Safety master stack works
Toward every safety slave, the CANopen Safety master stack supervises SRDOs using the CiA 304 data model: dual-channel, bitwise-inverted and CRC-protected, with a configurable Safeguard Cycle Time (SCT) and Safety-Related Validation Time (SRVT). Should a telegram time out or its two channels disagree, the stack drives the application to a safe state, and the Global Failsafe Command (GFC) is available to trigger a network-wide safe reaction.
Runs alongside standard CANopen
Because the CANopen Safety master stack sits next to the standard CANopen Master stack on the same controller and the same bus, safe and non-safe data travel together on one network. That lets you layer certified safety control onto an existing CANopen controller — no second, dedicated safety bus required.
Portable and certification-ready
Shipped as a ready-to-integrate binary behind a thin hardware abstraction layer, the CANopen Safety master stack runs on any MCU, any RTOS or bare metal, free of third-party dependencies. It is assessed to SIL3 / PLe (IEC 61508 / ISO 13849) by an independent certification body and arrives with the safety manual and certification artefacts your own assessment will call for.
Where the CANopen Safety master stack is used
Safety controllers, safety PLCs and machine controllers turn to the CANopen Safety master stack whenever they have to supervise safe devices across a CANopen network. Typical deployments span machinery and robotics, mobile and off-highway equipment, and process and medical systems governed by IEC 61508 and ISO 13849 — anywhere a controller has to coordinate safe and standard data on a single CAN bus.
Standards and conformance
The CANopen Safety master stack implements CiA 304 (EN 50325-5) with SRDO producers and consumers, and is assessed to SIL3 / PLe under IEC 61508 and ISO 13849 by an independent certification body. Working side by side with the standard CANopen master, it adds certified safety supervision without a second bus. It ships with the safety manual, certificate and test reports, and is supported directly by the engineers who built and certified it.
