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TD960801-0MC
11
2.5.3 Autobauding
Autobauding is the action of automatically matching the data
rate of the EXTEND-A-BUS to the data rate of a master
controller or scanner in a DeviceNet network. By moving the
Data Rate switch to the A position and powering up the
EXTEND-A-BUS, the EXTEND-A-BUS will attempt to
determine the data rate by observing the traffic on the CAN
port. Therefore, it is important that the CAN port be connected
to the DeviceNet subnet connecting the master controller. All
other EXTEND-A-BUSes should have their Data Rate switch
set to S (slave) position since their data rate will be set by the
master EXTEND-A-BUS (the one connected to the master)
which will broadcast the required data rate to all slaves once the
data rate is determined. Autobauding functions for the three
data rates: 125, 250 and 500 kbps.
Figure 2-6. Data Rate Switch