37
FTSPARK
DATA FIELD (8 bytes)
0
1
2
3
4 5 6 7
0x00
SEGMENTATION
DATA
PAYLOAD
First segment
DATA FIELD (1 to 8 bytes)
0
1
2
3
4
5
6
7
0x00
PAYLOAD
Second segment
DATA FIELD (1 to 8 bytes)
0
1
2
3
4
5
6
7
0x01
PAYLOAD
Third segment (if present)
DATA FIELD (1 to 8 bytes)
0
1
2
3
4
5
6
7
0x02
PAYLOAD
Last segment (if present)
DATA FIELD (1 to 8 bytes)
0
1
2
3
4
5
6
7
0xFE
PAYLOAD
NOTE
The maximum PAYLOAD length
will be: 5 + (0xFD * 7) = 1776
bytes.
The segmentation data contains the following information:
SEGMENTATION DATA (2 bytes)
Bytes
1
2
Bits
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
RFU RFU RFU RFU RFU
PAYLOAD total length (in bytes)
RFU: Reserved for Future Use
DataFieldID 0x03: FTCAN 2.0 Bridge (bridge, gateway or converter)
This DataFieldID uses the same data layout from DataFieldID’s 0x02 when the
data is going to or coming from a BUS converter.
10.5 Attachments
ProductID’s list
Since the 5 least significant bits of the ProductID are used for the unique value
the FTCAN protocol can have up to 32 devices of the same product type at
the same time. The unique value will range from 0x00 to 0x1F. The limit for
different products types will be 1024.
