Lenze EMF2113IB - Manual (Page 6)

Introduction
1
Preface
1.2
L
1.2-2 EDSIBS-1.0-06/2003
With the servo controller series 9300 Lenze has introduced the system bus based
on CAN. The functions of the CANopen communication profile have been
integrated into DS301. The main task of the system bus is the exchange of data
between the controllers and the communication with sensors, actuators and
display and operating elements without a higher level control. Furthermore it is
possible to use it for demanding and time critical applications. Here the controllers
are synchronised by means of a system bus.
CAN is available at a reasonable price and is suitable for smaller machines.
CANopen is a specific communication protocol according to CiA (CON in
Automation). Lenze offers communication modules for control with CANopen
master. These modules are compatible with the specification DS 301 V4.01.
The American automation manufacturer Allan Bradley developed the DeviceNet
fieldbus which is based on the CAN controller. This communication profile has
been published in the user organisation ODVA. A large number of sensors and
actuators is available. Like CANopen, DeviceNet uses controls with a DeviceNet
master.
The company Echelon (USA) developed the Local Operation Network (LON)
which is mainly used for industrial applications and time-critical demands. This
bus system is mainly used for automation in buildings. Every device connected
to the network has its own intelligence, i.e. higher-level controls are not necessary.
The lowest level of sensors and actuators is often networked by a AS-i bus
(Actuator-Sensor-Interface). It is a reasonably cheap way of transferring binary
signals I/O. The bus system can be handled, planned and installed easily.
Two-core AS-i cables do not only transfer data but also the auxiliary energy
needed for the devices connected to the AS-i bus.
Similar to the AS-i, the INTERBUS loop was developed as sensor/actuator bus.
Digital and analog devices can be easily connected thanks to insulation
displacement connectors. The INTERBUS loop is on a lower level than the
INTERBUS (remote bus). The INTERBUS loop is connected to the INTERBUS via
a bus terminal.
Lenze system bus (CAN)
CANopen
DeviceNet
LON
AS-i
INTERBUS loop
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