User`s guide

14 Block Reference
14-12
Select your data signal:
raw data: Input data as a uint8 vector array. If you select this option, you only
specify the message fields. all other signal parameter fields are unavailable. This
option opens only one input port on your block.
manually specified signals: Allows you to specify data signal definitions. If you
select this option, use the Signals table to create your signals. The number of
block inputs depends on the number of signals you specify.
CANdb specified signals: Allows you to specify a CAN database file that
contains message and signal definitions. If you select this option, select a CANdb
file. The number of block inputs depends on the number of signals specified in the
CANdb file for the selected message.