IMC CANSAS - Number of CAN-Nodes; Duplicate Samples in During Data Capture

CAN-Bus description 41
imc CANSAS Users Manual - Doc. Version 1.9 - 05.12.2014© 2014 imc Meßsysteme GmbH
2.6.7 Number of CAN-nodes
Number of nodes
Note
The cross section of the line should
increase in size as more CAN-nodes are
served by the system.
Line length
32
64
100
100 m
0,25 mm²
0,25 mm²
0,25 mm²
250 m
0,34 mm²
0,5 mm²
0,5 mm²
500 m
0,75 mm²
0,75 mm²
1,0 mm²
2.6.8 Duplicate samples in during data capture
Due to factors affecting the overall system, CAN-Bus modules feature a considerable amount of jitter
(<100µs) in outputting the measured data. If the data are recorded at a high sampling rate, some values
may be duplicated or, in rarer cases, erroneous data may appear. This effect only concerns modules
having a high sampling rate (e.g. imc µ-CANSAS, UNI8)
Possible remedies:
a) Universal:
Sample the imc CANSAS
channel with a time stamp
instead of equidistantly.
b) When using imc DEVICES or
imc STUDIO:
Use the CAN-1 synchronization
. This is absolutely
necessary if subsequent data
processing is performed with
in Online-FAMOS.
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