32
büS/CANopen-Design
6.11.3 Details on the DIP switches for colour coding:
The (classic) colour combinations can be set via DIP 1 to 4 as described in the Basic Operating Instruction, chapter
“Setting the colour combinations”. But on this occasion DIP 5 and DIP 6 have to be set to “OFF” to display the
correct colours.
As of firmware B.02.00.00 there are software configurable display modes for the device status LED (Top LED) – details
are specified in chapter “5.2”.
Other parameters or configurations require the use of the CANopen object list or parameter list - see “6.19.4 Access
to further parameters (cyclic and acyclic)”.
6.12 Network topology of a büS
/
CANopen system
When installing a büS/CANopen system, ensure that the terminating circuit of the data lines is correct. The circuit
prevents the occurrence of interference caused by signal reflection in the data lines.
The trunk line must be terminated at both ends with 120
Ω
resistors and 1/4 W power loss - see “Fig. 7: Network
“Fig. 7” illustrates a line with one trunk line and several drop lines. Trunk lines and drop lines consist of identical
material.
A unique Node ID (büS/CANopen address) can be allocated to each control head via DIP switches - see chapter
“6.13 Configuring the Node ID / baud rate”).
Trunk line
büS/CANopen cable
Terminating
resistor
120
Ω
¼ W
Terminating
resistor
120
Ω
¼ W
Drop lines
büS/CANopen
cable,
max. 6 m long
Node 01
Node n
Control head 1 (node 1)
Control head n (node n)
V +
V –
CAN_H
CAN_L
Fig. 7:
Network topology - büS/CANopen
english
Type 8681 büS/CANopen
Summary of Contents for 8681
Page 59: ...59 english Type 8681 büS CANopen ...
Page 60: ...www burkert com ...
