The connection of the CANalarm for programming purposes
he CANalarm does not have a separate programming interface. Programming is done via the CAN bus itself. You must, therefore, set up a functioning bus in order to be able to connect to the configuration software.
It is not sufficient to connect the CANalarm to a CAN-2-USB interface. The minimum configuration consists of two terminating resistors, a CAN-2-USB interface and the power supply for the CANalarm. (in practice, a single terminating resistor is usually sufficient without a cable)
The CANalarm is addressed via the software on two configurable IDs. The default setting is 7A0h for the Set-ID and 7A1h for the Reply-ID.
If the addresses are unknown, the configuration menu via the keys on the CANalarm can help. Press the “Reset” and “Mode” buttons together for one second. By repeatedly pressing the “Mode” button, the Set-ID and the Reply-ID are also displayed. These ID’s must be entered in the configuration software in order to communicate with the CANalarm. A change of the ID’s is only possible via the software.
The configured addresses must be free on a later bus. The configuration can also be carried out later directly in the running bus.
In a bus with a power supply, the CANalarm gets its power from there.
Further details on the configuration software can be found in the CANalarm manual in section 5.2.1.