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Chapter 2 Decentral block periphery CAN-Bus CANopen
Manual VIPA System 100V
2-4
HB100E - SM-CAN - Rev. 15/02
•
max. 128 participants per net - max. 64 slaves per segment
•
max. net extension at 1MBaud 25m, at 50kBaud 1000m
(depending on baudrate)
•
max. baudrate 1MBaud
The maximum bus length with CAN is predominantly limited by the signal
run time. The multi-master bus access procedure (arbitration) requires that
the signals are applied at all nodes quasi simultaneously (before the
scanning within one Bit time). For the signal run times of the CAN modules
(transceiver, opto coupler, CAN controller) are nearly constant, the line
length has to be adjusted to the baudrate:
Baudrate
Length
1MBit/s 25m
800MBit/s 50m
500kBit/s 100m
250kBit/s 250m
125kBit/s 500m
(50kBit/s) 1000m
(20kBit/s) 2500m
The "Emergency" object serves the diagnosis. It is provided with a high
priority and delivers information about the device and the net.
Every bus participant identifies itself with an address. This address must be
unique in this bus system and may range between 01... 99.
The address is adjusted at the CAN-Bus coupler via the address adjuster.
To configure a slave connection in your projecting tool, you get the
performance data of the components in the consignment in form of an
EDS-file (
e
lectronic
d
ata
s
heet).
The EDS-files are:
VIPA_153_4CF00.EDS
VIPA_153_4CH00.EDS
VIPA_153_6CH00.EDS
VIPA_153_6CL10.EDS
Install your EDS-files in your projecting tool! More detailed information
about the installation of the EDS-files is in the manual to your tool.
Restrictions
Bus length
Diagnosis via
Emergency object
Addressing
EDS-file