CAN Repeaters, Routers, Optical Links
and hand held Diagnostics Unit
The PCAN-Repeater creates a
connection between two High-speed CAN busses with galvanic isolation of up
to 5 kV. Bus rate is automatically sensed but both busses must operate at
the same speed. Both CAN channels are decoupled from each other and from the
power supply. CAN messages are forwarded 1:1 between the two channels and
may be forwarded uni-directionally if required. LEDs display the current bus
status. Each CAN channel can be selectively terminated
With its DIN rail casing and
extended temperature range support, this module is suitable for use in an
A Repeater will isolate sections of a CAN bus but will
reduce the length of a bus by its delay time and cannot be used to extend
A CAN Router as it takes information from one CAN bus,
filter or modify it and send it to a second bus so a Router can be used
effectively to extend a bus by splitting it into two parts.
The PCAN-Router is a module that accesses
two separate CAN networks. It uses a programmable ARM
microcontroller to process the data it sees on these two channels ,
so that incoming CAN messages can be evaluated, converted, and
filtered individually, in order to transmit appropriately customized
CAN messages to the other network.
The PCAN-Router is shipped with demonstration
firmware which performs one-to-one forwarding of the CAN messages between
the two CAN networks at 500 kbit/s. The source code for this
application and a GCC compiler and GDB environment is included on the CD-ROM
supplied with the units. It is possible to load your own firmware onto the
module via CAN by means of a pre installed boot loader.
The two networks need not operate at the same
speeds however buffering software would need to be written by the user to
cope with any resulting queues of messages.
The module is mounted in an aluminium casing, and
is shipped in versions with two Sub-D connectors, or a screw-terminal strip.
A power supply 7-26V DC is required.
The router can be fitted with an additional LIN
channel if required and the Sub-D connector version also has an additional
digital line. A version with galvanic isolation is available Sub-D only
AS described above but in a plastic DIN Rail package for use
in industrial environments. Bit rates can be set with a front panel
switch and CAN1 is isolated up to 5kV from CAN2 and the power supply
(compliant with ICE 60601-1). Ask for a copy of the user manual to see
the full range of diagnostic aids supplied.
The PCAN-Router Pro allows
the data traffic from up to four High-speed CAN busses to be
As well as pure forwarding, the CAN
data can be processed, manipulated, and for example filtered in a number of
different ways. To do this, the behaviour of the PCAN-Router Pro can be
freely configured using comprehensive Windows software. There are a variety
of function blocks and other settings available to the user to allow this
kind of configuration to be set up.
At the same time, there is a virtual
fifth CAN channel which is responsible for recording some or all of the data
traffic to a Compact Flash card. A battery powered real-time clock (RTC),
can be used for logging and wake-up.
A modular bus structure allows
specific transceivers to be fitted to allocated channels on request. For
example, High speed CAN is standard but opto-decoupled, Low-speed and Single
wire CAN transceivers are also available on request and CAN termination is
As an alternative to the standard firmware which
the PCAN-Router Pro is equipped with at delivery, custom firmware based on
the ARM microcontroller NXP LPC2294 can be created and implemented. A
library and the Yagarto GNU ARM toolchain (contains the GNU Compiler
Collection GCC for C and C++) are included with some example configurations.
Although designed as a Router these units could ( within
the limits of their single chip micros) be used as a network controller and
data logging device for
The PCAN-LWL package enables any CAN section to be
implemented with an optical link. The optical waveguide consists of a
62.5/125 μm duplex fibre optic cable with ST connectors. Conversion can be to
High Speed CAN or Low Speed CAN and termination selected with internal
Areas of application include EMC measurements on CAN
modules, CAN sub-sections with high electromagnetic irradiation and lines
that pass through areas where there is a risk of explosion.
The package supplied contains two modules complete with 5
meters of fibre optical cable including connectors. The modules require an
external power supply or they can be powered by batteries. A suitable
battery is available as an option.
PCAN-Diag 2 is a handheld diagnostics unit with a wide range
of functions to allow investigation of the correct operation and performance
of a CAN bus, such as detection of the CAN bit rate, bus load measurement,
and termination measurement. As well as receiving CAN messages, it can
transmit either individual test messages or entire sequences of them. In
addition, the internal memory card allows tracing and playback of the CAN
The integrated two-channel oscilloscope enables visualization of CAN
signals. Single CAN IDs and various events can be used as triggers. The CAN
frames are decoded from the analogue signal, for example, to detect errors
in the frame.
Incoming CAN messages can be displayed symbolically for clear and easy
identification. The PCAN Symbol Editor software supplied with this product
enables convenient creation of the symbol files needed for this feature.
Output is through an OLED colour display which allows excellent readability
even when there is strong ambient light. The user selects and operates the
individual diagnostic functions using a push dial. Normally supplied with
High-speed CAN transceiver modules, Low-speed or Single-wire CAN are also
For more Information on :-
Free PEAK CAN Software
||The PCAN-Basic DLL, a
range of OS drivers and PCAN-View bus diagnostic package are all
supplied free with all Peak interfaces.
||A sophisticated CAN bus
logging and diagnostic package for use with complex applications including GUI and J1939 support.
||USB, PCI, PC104, PC, PCMCIA, Express, Parallel port, ISA, RS232,
PEAK Data Acquisition Systems
||A range of CAN Data Acquisition and logging Systems from
simple logging to advanced GPRS mobile applications.
||CAN modules with
configurable digital and analogue I/O.
Other PEAK Software
||Software is available
to support FMS, CAN simulation, CANOpen, Linux and an Event driven
API for time critical multi-tasked operation,
performance CAN cables, converters and termination
||Our technical summary
for those new to CAN