Functional Description; Global Parameters; Bit Rates; Canbus Line Termination - HBM QUANTUM X Bedienungsanleitung

6

Functional description

CANBus
6.1

Global parameters

6.1.1

Bit rates

Parameterization of the CAN bit rate is extended as of
firmware version 4.6. You can select a required bit rate,
the sample point and the synchronization jump width
(SJW) in a view.
A bit rate (value in bits/s) must be specified for
parameterization. In addition to this, "SamplePointRatio"
selects a required sample point and "SJW" a
synchronization jump width between 1 and 4 time quanta.
Once the parameterization has been forwarded, it is
verified in the module and a setting is made that is as
close as possible to the required parameters. The
parameterization can now be read back, and the values
actually set at the time can be read out from the relevant
XML tags preceded by "Active". Users are free to assign
the values that are read back to meet their own require­
ments.
The chosen factory setting is: Bit rate = 1000 kbit/s,
SamplePointRatio = 87.5 %, SJW = 4.
6.1.2

CANBus line termination

All the MX471B variants and the MX840B-R can switch
CAN bus line termination on or off via parameterization.
The MX840, MX840A and MX840B do not support
internal line termination.
A4461-2.0 HBM: public
Functional description
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