Configuring The Bus Termination Resistors; Configuring The Bit Rate - HMS Networks Ixxat CAN-CR200 User Manual

Configuration
5.2

Configuring the Bus Termination Resistors

Observe the following when configuring the bus termination resistors:
► Activate the bus termination resistors of every CAN circuit that is not connected.
► If one or two CAN repeater are used, activate the bus termination resistor of each CAN 3
circuit.
► If several CAN repeaters are used in a line, activate the bus termination resistors of CAN 3 of
the first and the last CAN repeater in the network.
► Make sure, that the termination resistor value of the total network is about 60 Ohm (120
Ohm at both ends of the network).
The bus termination resistor for each CAN circuit can be activated and deactivated with the
corresponding DIP switch.
► To activate the bus termination resistor, set both positions of the corresponding DIP switch
to ON.
► To deactivate the bus termination resistor, set both positions of the corresponding DIP
switch to OFF.
Default Configuration
CAN 1
OFF (deactivated)
5.3

Configuring the Bit Rate

This setting is necessary, to allow the internal logic to detect dominant-lock states (dominant
level on CAN bus exceeds the maximum allowed duration).
Configure the bit rate of the CAN network with DIP switch S301 (3).
►
► Only use one of the following valid combinations, to avoid malfunction of the CAN repeater.
Valid Bit Rate Combinations
S301-1
ON
OFF
OFF
CAN Repeater User Manual
To avoid transmission issues, ensure correct bus termination!
CAN 2
OFF (deactivated)
S301-2 S301-3 S301-4
OFF OFF OFF
ON OFF OFF
OFF ON OFF
Comment
Bit rate between 5 kbit/s and 100 kbit/s
Bit rate between 100 kbit/s and 500 kbit/s
Bit rate equal or above 500 kbit/s (default)
CAN 3
ON (activated)
4.01.0067.20000 3.4 en-US
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