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Technical Manual 1.02, C350 Professional
CAN communication port
The C350 pro provides the physical layer for the CAN (Controller Area Network) serial
communication interface in accordance with the ISO 11898 standard. The CAN bus is
designed for high-speed (up to 1Mbit) robust communication in especially harsh
environments like those found in the automotive industry.
The CAN interface can either be connected to an existing CAN network with a common
protocol like the J1939 standard to retrieve information for surveillance or information
purposes. Or the interface can be used as a robust serial data link with a non-standard
protocol. Please consult the M2M Control IDE on-line help for more information.
The physical layer consists of a two wire (CAN-H and CAN-L) differential bus and a signal
ground for reference. These signals are available on the pluggable screw terminals.
Be aware that connecting the unit to a CAN network can be dangerous. If the unit is not
configured with the correct network parameters, it will lead to network corruption and may
interfere with other connected equipment on the bus. Especially in vehicles great
precautions must be observed to prevent interruption of the communication.
On the C350 pro unit writing capability on the CAN bus is enabled by default, this can be
disabled by installing the hardware jumper JP5 inside the unit.
If the C350 unit is connected to a "non-existing" network, a 120
connected between CAN-H and CAN-L at each end of the transmission-line to terminate it
and avoid signal reflections. This resistor can be connected by installing the hardware
jumper JP15 inside the unit.
By default the CAN communication lines are not terminated with 120 ohm and writing
capability on the CAN bus is enabled. For placement and configuration of the hardware
jumpers inside the unit, please refer to the configuration guide in Appendix A.
A wide range of software functions is available for easy access to the network. Please
consult the M2M Control IDE on-line help for further information.
CAN pins.
Pin
Name
4
CAN-H
5
CAN-L
6
SGND
M2M Control can not be held responsible for any problems or damage due to
corruption and interference in an existing CAN network.
2
Assuming use of a CAT5 twisted pair cable
M 2 M C o n t r o l
by Infranet Technologies GmbH
Tempowerkring 2
21079 Hamburg
Germany
Description
CAN-bus H-signal
CAN-bus L-signal
Signal ground
2
ohm resistor must be
Page 20 of 38
Ph: +49.40.69647-260
Fax: +49.40.69647-259
Email:
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Web: www.m2mcontrol.de
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