Hioki MR8904, Инструкция по эксплуатации

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5.3 Creating a CAN Definition Data File
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The entered information will be registered on the
window list.
4
Click to specify a filename and
save the information displayed on the
window.
To change the filename and save the
information displayed on the window to
a new file, click on the toolbar and
follow the instructions to select a new
filename. (Files have the extension
.CDF.)
How to count the bit position
1. The least significant bit (LSB) in the first byte of data in the data frame is assigned the
number 0, and the number is increased 1 for each bit toward the most significant bit
(MSB).
2. Once processing reaches the MSB position, it will attempt to move to the next byte of
data and continue counting up from the LSB toward the MSB.
3. Since the maximum data frame size is 8 bytes (64 bits), the last MSB position for the 8th
byte of data from the start will be 63, yielding bit position values of 0 to 63 as shown
below:
7 bit 6 bit 5 it 4 bit 3 bit 2 bit 1 bit 0 bit
byte 0 7 6 5 4 3 2 1 0
byte 1 15 14 13 12 11 10 9 8
byte 2 23 22 21 20 19 18 17 16
byte 3 31 30 29 28 27 26 25 24
byte 4 39 38 37 36 35 34 33 32
byte 5 47 46 45 44 43 42 41 40
byte 6 55 54 53 52 51 50 49 48
byte 7 63 62 61 60 59 58 57 56
LSB MSB
Start
End
Calculating the start bit (data start position)
For example, if you wish to capture 8 bits of data for the 2nd byte from the start, the LSB
value would be 8 (see below).
7 6 5 4 3 2 1 0 7 6 5 4 3 2 1 0 7 6 5 4 3 2 1 0 7 6 5 4 …
byte 0 byte 1 byte 2 byte 3
End of data frame Start of data frame
: Length of data you wish to capture (in bits)
2nd byte 1st byte
(This position is the LSB. The value is 8 according to the table above.)