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3.2. CANopen

Under the technical direction of the Steinbeis Transfer Center for Automation, the CANopen profile was

developed on the basis of the Layer 7 specification CAL (CAN Application Layer). Compared to CAL,

CANopen only contains the functions suitable for this application. CANopen therefore represents a subset of

CAL optimized for the application and enables simplified system design and the use of simplified devices.

CANopen is optimized for rapid data exchange in real-time systems.

The CAN in Automation (CiA) organization is responsible for the applicable standards of the corresponding

profiles.

CANopen enables:

• Simple access to all device and communication parameters

• Synchronization of several devices

• Automatic network configuration

• Cyclical and event-controlled process data traffic

CANopen consists of four communication objects (COB) with different properties:

• Process data objects for real-time data (PDO)

• Service data objects for parameter and program transmission (SDO)

• Network management (NMT, Heartbeat)

• Predefined objects (for synchronization, emergency message)

All device and communication parameters are structured in an object directory. An object comprises the

name of the object, data type, number of sub-indices, structure of the parameters and the address.

According to the CiA, this object directory is divided into three different parts: communication profile, device

profile and a manufacturer-specific profile (see Object directory).

3.3. CANopen in lift construction

CANopen is a standardized application for distributed, industrial automation systems based on CAN and on

the communication standard CAL. CANopen is a standard of the CAN in Automation (CiA) and already found

extremely broad acceptance shortly after it became available. In Europe CANopen can be considered the

decisive standard for the realization of industrial CAN-based system solutions.

The responsibility was turned over to the organization CAN-in-Automation, which coordinates all work on the

CANopen system worldwide. Within the CiA a special interest group (SIG) "Lift" was founded. The task of this

SIG is the checking of the existing profiles for their suitability for lift construction and their expansion or

redefinition. Within the SIG "Lift" various working groups for the individual profiles were specified.

Manual_GXP5_417_Lift_EN.doc

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Baumer IVO GmbH & Co. KG

04.05.11

Villingen-Schwenningen, Germany