Expert
Logger
in
Extended ID .
The filter value is linked with the configured and received ID
bit by bit AND. The message is evaluated when the configured and received
ID have the same value, otherwise it will be ignored. An identifier group is
established when the bits that are to be ignored during evaluation are set to
0. Enter
7FF
or
1FFFFFFF
when you do not want to use a mask for filtering.
Example for mask settings
ID
= 0x027 = 100111 = binary,
Filter
= 0x24 = 100100 binary (numbers
with 0x are in hexadecimal format); bit by bit AND operation results in
100100 in binary. The first four digits of the link and ID are identical; and
only the last two digits are 0 and 1. CAN messages are then received with
IDs that begin with 1001 (binary) and end with either two zeroes or two
ones, i.e. all messages with the (binary) IDs 100100, 100101, 100 110 and
100111.
Start position in payload data
l
Byte offset
The length of the payload data, i.e. the size of the data field (DATA) of a CAN
message, is limited to a maximum of 8 bytes. This allows multiple signals to
be transmitted within a CAN message as long as not all the 8 bytes per signal
are being used (this would only be the case with a binary-coded 64-bit float-
ing value). Enter the starting byte for this signal's payload data In the
example, the value 2 means that, for example, one signal with 2 bytes (bin-
ary-coded 16-bit integer value) would fit before the current signal and two
signals behind it.
The maximum possible value of the offset is derived from the bit length of the
data type and is displayed to the right of the numeric field. Input is restricted
to the valid values, and the default is 0
l
Bit offset
This field is available only for the bit data type and binary encoding. The pay-
load bit in this data type can be between the 0 and seventh byte position.
Byte offset is also available for this data type. Input is restricted to the valid
values, and the default is 0
Data type settings
l
Data type
Specifies the data type for interpreting the transmitted payload data.
Bit
length, Byte order
and
Word order
are set and adjusted in relation to the
Start position in payload data, Scaling
are also set according to the data type.
l
Signed
Sets whether the integer data type is to be interpreted as signed or
unsigned. An 8-bit value would then be in the range -128 to 127 (two’s com-
plement) or 0 to 255. Floating values are always interpreted as signed. Bit-
values make no distinction between signed and unsigned.
200
Delphin Technology AG
Januar 2018
Expert
Logger
Manual
