ETHERNET Powerlink Safety Protocol Software
Software package for the development of
safety nodes (SN)
and Safety Configuration Manager (SCM)
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Highlights
- Scope of functions based on the current ETHERNET Powerlink Safety specification
- Modular software structure for the implementation of SN and SCM
- Pre-certified software component enables quick and easy development of EPLsafety devices
- Clearly structured programming interface for connection of the application program
- “C”-source code for use on any target platforms (hardware-independent)
- Independent of operating system – can be run with and without operating system
- Simple connection to a non-safe transport protocol possible via abstraction layer
- Any non-safe transport protocol can be used; not limited to ETHERNET Powerlink
- Multi-instancibility allows simple creation of safety domain gateways
- Reference portation for Intel Xscale (IXP420) and Atmel ARM7 (AT91SAM7S64) for GNU C-Compilers
- Designed for use in SIL-3 devices
- Free PC demo available
Overview
Architecture of the EPLsafety software
| SSC: | Safety Stack Control: control of the EPLsafety software such as stack initialisation |
| SNMT: | Safety Network Management: transmission, reception and processing of network management commands as well as distribution of the safety addresses |
| SCM: | Safety Configuration Manager: configuration, verification and monitoring of safety nodes |
| SPDO: | Safety Process Data Objects: cyclic exchange of process data and verification of time synchronization |
| SSDO: | Safety Service Data Objects: server/client communication to access the object directory via the network |
| SOD: | Safety Object Dictionary: access to the Safety Object Directory |
| SFS: | Safety Frame Serialization: serialization and deserialization of the safety frames |
| SNS: | Safety Node State: management of the operating states of the safety nodes |
| SERR: | Safety Error Handling: logging of stack-internal errors |
| SCFM: | Safety Control Flow Monitoring: monitoring of the correct program flow in accordance with SIL-3 |
Hardware concepts for EPLsafety
The Safety Integrity Level (SIL) that can be achieved with the EPLsafety software mainly depends on the hardware architecture used. The IXXAT EPLsafety software was created for use in SIL-3 devices. To meet the requirements of SIL-1, it is sufficient for example to use one single Safety Controller (SC) that carries out the safe application and the EPLsafety stack. To achieve SIL-3, the Safety Controller must also be designed as redundant.
SIL-1/SIL-2 hardware architecture
SIL-3 hardware architecture
Overview of functions
With its function modules, the IXXAT EPLsafety software enables the execution of all communication and back-up mechanisms necessary for EPLsafety. This includes the provision of a Safe Object Directory (SOD), Safe Process Data (SPDO) and Safe Service Data (SSDO) as well as time and CRC monitoring of the data packages. Zipping and unzipping of the EPLsafety frames in the transmission messages of the non-safe transmission protocol is carried out by the functions of the hardware-level firmware (SHNF) provided by the user. The inputs and outputs of the EPLsafety device must also be controlled by a special safety application. The SOD of the EPLsafety software is used as the data interface to the safety application.
Integration of the EPLsafety software in the overall system
Scope of supply
- C-source code
- Pre-certified reference implementation
- Software license available for SN or SCM+SN
- Manual
- One-day code introduction
- Technical support
Supplementary services
- Maintenance contract
As a supplement to the software package, IXXAT offers a maintenance contract. For the period of the contract, the maintenance contract consists of the following services:
- free updates and troubleshooting
- technical support by phone including answers to general questions
on ETHERNET Powerlink Safety
- Technical support
Support for software certification. You benefit from our comprehensive EPLsafety know-how and expertise in the development of safety-critical software.
Order number
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