Open search
Advertisement

Q&A with 3S

Questions to software specialists

Stefan Blasi answered five questions about the Codesys PLCopen runtime system. 3S provides SIL-2 and SIL-3 runtime systems.

The computer scientist Stefan Blasi is 3S’ CAN specialist (Photo: 3S)

Q: Do you supply a CANopen protocol stack with your PLCopen runtime system? Which CiA 301 version does the stack comply with?

A: Both Codesys V2 and Codesys V3 come with a CANopen master and slave stack. They can be configured with integrated easy-to-use configurators. Our stacks comply with the latest CiA 301 specification and are implemented in the IEC 61131-3 language Structured Text as a portable Codesys library. They are compiled, linked, and downloaded together with the application to the runtime system.

Q: Does your CANopen protocol stack feature additional functionality as specified in CiA 302 series (e.g. Flying NMT master, SDO manager) or CiA 305 (Layer Setting Services)?

A: The master and slave stack support the optional Time protocol as specified in CiA 302. Furthermore it is possible to perform a CANopen network scan with the Codesys V3 CANopen master. All detected slaves are automatically added to the Codesys device tree.

Screenshot of 3S’ integrated CANopen Safety solution (Photo: 3S)

Q: Does your CANopen protocol stack support the CANopen-Safety protocol? Which Safety Integrity Level does it comply with?

A: Codesys V3 provides a SIL-2 and SIL-3 runtime system. The SIL-2 runtime system is designed for mobile machines and supplies a CANopen Safety extension for both master and slave. The CANopen Safety stacks are implemented as Codesys libraries as well.

The Codesys V3 IDE comes with an easy-to-use CANopen-Safety configurator extension. All CRCs for safety configuration are automatically calculated by Codesys so that no additional tools are required.

Q: Which CANopen profiles do you provide for CANopen slave implementations?

A: Our CANopen Slave stack is a complete generic implementation. It does not implement a specific profile. The user can import an object dictionary from any EDS file. In future versions we will also offer an object dictionary editor.

Q: Do you offer PLCopen function blocks for CANopen services? Do they comply with CiA 405 or are they proprietary?

A: Yes, Codesys V3 comes with a CiA 405 compliant library. It offers function blocks for diagnosis, SDO Read/Write and Network Management. Furthermore we supply certified PLCopen function blocks for motion control. These function blocks can operate with CiA 402 compliant CANopen drives through our CANopen motion drivers.



Publish date
2014-11-05
Company

Codesys

Breadcrumb