User´s Manual - I+ME ACTIA GmbH

String
Note: The Signal (Data) Type String is also known as ASCII or ASCII String.
CAT allows the user to edit or remove already existing Signals assigned to Frames. The user can also
create new Signals using CAT.
CAT can recognize eight different types of signals and allows often different formats. To edit or create
a String Signal open the Signal Definition window shown below.
Note: If you edit a diagnostic signal assigned to a DPID you see
DPID: instead of Frame: and Byte is default '1'.
Format
A String Signal has always the format ASCII.
Position in the Frame
Byte: Describes which Data Byte of the frame is the first one used for this signal. (Starting Byte) Bytes are
counted upwards:
Byte 0 means the signal could be maximal 8 Byte long
Byte 7 would mean that the signal must fit into this single (last) Byte.
Bit: For String Signals the start Bit is always Bit 7.
Length: Describes the absolute Length of the signal.
For a String signal the length is always a multiple of one Byte. (Up to 8 Bytes possible)
See also Data Byte/Bit presentation on the CAN bus.
Note: For DPID signals Byte 0 is already used. So the selectable starting bytes are Byte 1 to 7 and
the maximal length is 7 Bytes.
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