NORD Drivesystems BU0200 - Manual (Page 292)

9 Additional Information
BU 0200 GB-4411 Subject to technical alterations 291
Addressing
If several frequency inverters are connected to a system bus, these devices must be assigned with unique
addresses. For preference, this is done via the DIP switch S1 on the underside of the SK2xxE (Section
5.2.2.2). For the use of CANopen absolute encoders, the encoders must be assigned to the relevant FI via
the node ID. If, for example, there are one encoder and four frequency inverters on the system bus and the
encoder is to operate with FI3, the node ID 37 must be set on the encoder, see the following table.
Frequency inverter Addressing via DIP switches Resulting Node ID Node ID
Absolute value
encoder
DIP 2 DIP 1 Frequency inverter
FI1 OFF OFF 32 33
FI2 OFF ON 34 35
FI3 ON OFF 36 37
FI4 ON ON 38 39
For field bus modules, no assignment of addresses is necessary. The module identifies all the frequency
inverters automatically. Access to the individual inverters is via the field bus master (SPS). Details of how
this is carried out are explained in the relevant bus instructions.
I/O extensions must be assigned to the relevant frequency inverter. This is carried out by means of a DIP
switch on the I/O module. A special case for the I/O extensions is the "Broadcast" mode. In this mode, the
data of the I/O extension (analog values, inputs etc.) are sent to all inverters simultaneously. Via the
parameterisation in each individual frequency inverter, a decision is made as to which of the received values
are to be used. Further details of the settings can be obtained from this manual (see also Sections 3.4.3 and
3.5.4).
NOTE
Care must be taken that each address is only assigned once. In a CAN-based network double
assignment of addresses may lead to misinterpretation of the data and therefore undefined
activities in the system.
Integration of devices from other manufacturers
In principle, the integration of other devices into this bus system is possible. These must support the
CANopen protocol and a 250kBaud baud rate. The address range (Node ID) 1 to 4 is reserved for additional
CANopen masters. All other participants must be assigned addresses between 50 and 79.