SIGMATEK CCP 531 - CAN Bus Configuration; Station Number Assignment on CAN Bus; Data Transfer Rate and Bus Length

C-DIAS PROCESSOR MODULE CCP 531
12.04.2017 Page 13
CAN Bus Setup
This section explains how to configure a CAN bus correctly. The following parameters must
first be set: Station number and data transfer rate.
CAN bus station number
Each CAN bus station is assigned its own station number. With this station number, data
can be exchanged with other stations connected to the bus. Up to 31 stations can be in-
stalled in a CAN bus system. However, each station number can only be assigned once.
CAN bus data transfer rate
The data transfer rate (baud rate) for the CAN bus can be set. However, the longer the
length of the bus, the smaller the transfer rate that must be selected.
Value
Baud rate
Maximum length
00
615 kBit/s
60 m
01
500 kbit/s
80 m
02
250 kBit/s
160 m
03
125 kBit/s
320 m
04
100 kBit/s
400 m
05
50 kBit/s
800 m
06
20 kBit/s
1200 m
07
1 Mbit / s
30 m
These values are valid for the following cable: 120 , Twisted Pair.
NOTE: the following is valid for the CAN bus protocol: 1 kBit/s = 1 kBaud.