ページを印刷する6.4.2
Type
Scale
Length
6.4.3
Type
Scale
Length
Q.series
Gantner Instruments
BCD data decoding
BCD, or binary-coded-decimal, is also a common data format found in
ARINC 429. In this format, four bits are allocated to each decimal digit. A
general BCD word is shown in Figure 6-2. Its data fields contain up to five
sub-fields.
Figure 6-2 BCD Word Format
The most significant sub-field contains only the bits, so that its maximum
decimal value can be 7. If the maximum decimal value is greater than 7,
bits 29 through 27 are padded with zeros and the second sub-field
becomes the most significant.
Set to bcd to decode ARINC words in binary-coded decimal format.
Specify the scale factor (or range) for binary coded decimal encoding. The
decoded value is multiplied by this factor (for example 0.1 or 100).
Specify the number of bits used to represent the data.
Raw
Use this type to read the raw data format without any decoding.
Set to raw to read ARINC words in raw format without decoding.
Not used.
Not used.
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