SUPREMATouch
136
Installation
MSA
US
The maximum length of a cable is calculated as follows
, where R is the maximum load in ohms,
(conductivity of copper); and A is the cross section of the conductor in mm².
If no information is available on the maximum load, only the specified maximum length may be
used.
The maximum allowable length of the CAN bus can be found in figure 63. It is possible to enlarge
the distances by the use of a CAN bridge.
Fig. 63 Maximum Allowable CAN Bus Length
NOTE: Cable must be laid in agreement with the previous EMC instructions and regulations.
10.3 Module Configuration
The modules should be configured in the order given here with no voltage applied. In the case of
systems that have already been configured, the configuration of the individual modules must be
checked.
Configuration of MIB Module
A DIL switch is provided on the back of the MIB module. This switch is used to set the CAN bus
parameters.
l =
R * K * A
2
k = 56
m
Ohm * mm
2
Bit rate in kBit/s 10 20 50 125 250 500 1000
Maximum Bus in m 5000 2500 1000 500 250 100 25
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