Introduction

All Lenze drive and automation systems have anintegrated system bus interface to network control

components on the fieldbus level.

The system bus interface allows to exchange, for example, process data and parameter databetween the participants and to connect other modules such as decentralised terminals, keypadsand input devices as well as external controls and hosts.

The system bus interface transmits CAN objects on the basis of the CAN open communication

profile (CiA DS301, version 4.01), which was created by the CiA umbrella organisation (CAN in

Automation) in accordance with the CAL (CAN Application Layer).

Device identifiers

A so-called node address in the range from 1 to 63 (also called node ID) is assigned to each

participant part of the system bus network.

 Each node address may only be assigned once in the network.

Identifier

The CAN communication principle is based on a message-oriented data exchange between a

sender and many receivers. All participants can send and receive messages at the same time.

The Identifier in the CAN telegram, which is also called COB ID (Communication Object Identifier,

controls which participant is to receive the sent message. Apart from the address, the identifierincludes information about the priority of the message and the type of user data used.

The identifier consists ofa" basic identifier" and the node address of the participantto be addressed:

Identifier = Basis-Identifier + Knotenadresse

3-2)

With the Lenze devices, the node address is defined in code C0350.

For network management and the Sync telegram you only need the basic identifier.