M 2 M C o n t r o l
by Infranet Technologies GmbH
Ph: +49.40.69647-260
Tempowerkring 2
Fax: +49.40.69647-259
21079 Hamburg
Email:
Germany
Web: www.m2mcontrol.de
Technical Manual 1.05, C600 Professional
Page 13 of 24
CAN
The C600 Professional 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 online 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.
If the C600 is connected to a “non-existing” network, a 120 ohm resistor must be
connected between CAN-H and CAN-L at each end of the transmission-line to terminate it
and avoid signal reflections.
Be aware that connecting the C600 to a CAN network can be dangerous. If the C600 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.
By default only Reading from the CAN bus is enabled and the Write capability is disabled
by a hardware jumper inside the unit. Removing this jumper is done on the sole
responsibility of the user and M2M Control can not be held responsible for any problems or
damage due to this decision. For information how to enable CAN Write capability please
refer to Appendix A.
A wide range of software functions is available for easy access to the network. Please
consult the M2M Control IDE online help for further information.
X2: 12 pin (Communication) connector overview.
Pin
Name
Description
3 CAN-H CAN-bus
H-signal
9 CAN-L CAN-bus
L-signal
8 SGND Signal
Ground
