Specifications
18-456 | OWNER’S GUIDE
Or, if this message contains multiple channels, repeat the procedure starting with the ADD button mentioned
above, and create more channels. Within a message, there can be numerous channels, and each one can
be absolutely unique in terms of its bit length, scaling, name, units... CAN is really quite exible.
Arbitration IDs and CAN message rates
CAN messages are identied via hex IDs known as “Arbitration IDs.” This is what DEWESoft shows on the
message list, in the ARB column:
Below the Arbitration ID, the rate at which this message is coming across the bus is also shown in Hz. You
will notice that each message can come across at a different rate.
J1939 support
J1939 is used to enable special decoding of arbitration ID which includes the sender, receiver and the mes-
sage ID itself. Arb ID is always extended in this case. This is most widely used on trucks, busses and certain
military vehicles. Please make sure that the bus type is really J1939 before enabling this option.
OBD II support
DEWESoft additionally supports the protocol for reading in data from the OBD II port, required on all US
cars. In this case, the messages are standardized, and a DBC le is not needed. This feature requires that
an optional plugin be purchased and installed into DEWESoft.
Select messages / channels for storage
Notice the buttons near the top of the CAN setup window labeled VIEW: