User Manual M3000® Automation System / MSC II (Moog Servo ...

7 Networking M3000 ® Modules Networking DIN Rail Modules
7.7.3.1 Example
CAN Bus
Network
Station
MSC II
WCAN
CAN Bus
Network
Station
MSC II
CAN Bus
Network
Station
MSC II
CAN Bus
Network
Station
MSC II
WCAN WCAN WCAN
Figure 48: LocalCAN Bus Group (MSC IIs as CAN Bus Network Stations)
The internal CAN bus termination resistor is switched on for MSC IIs that
are used as the first or last CAN bus network station of a LocalCAN bus
group.
�-"10.15.1-CAN Bus Termination Resistor" on page 110
The internal CAN bus termination resistor is not switched on for MSC IIs
that are located between the first and final CAN bus network stations of
a LocalCAN bus group.
CAN bus networks with M3000 ® modules can include a maximum of
64 CAN bus network stations.
�-"7.5.5.3-Number of Network Stations" on page 58
7.7.4 WideCAN Bus Groups
(Additional
CAN Bus Network
Stations)
CAN Bus
Network
Station
MSC II
WCAN
WideCAN bus groups are formed by connecting the WideCAN terminal of the
MSC II to additional CAN bus network stations. CAN bus network stations
use the internal WideCAN bus to communicate within WideCAN bus groups.
Observe the following when establishing WideCAN bus groups:
• The switchable CAN bus termination resistor of the MSC II cannot be
used as a termination resistor for the WideCAN bus group.
Separate pluggable CAN termination resistors must be used for this.
�-"10.15.1-CAN Bus Termination Resistor" on page 110
• Notes on project planning for CAN bus networks:
�-"7.5.5-CAN Bus Networks" on page 57
LocalCAN Bus Group
WideCAN Bus Groups
© Moog GmbH User Manual M3000 ® and MSC II (CA65865-001; Version 1.1, 08/08) 67