Denso BHT-4000 User Manual page 106

Data Text Format
(1) Heading text
Byte
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21
position
Example of
M A S T E R
contents
The data file name should be a
maximum of 12 characters long and it
consists of FILE NAME and .EXTEN-
SION. The FILE NAME should be 1 to
8 characters long. The EXTENSION
should be other than .PD3, .FN3, and
.EX3, and it may be omitted (together
with a period). In Easy Pack 4.2, the
following file names are used:
PACK1.DAT
PACK2.DAT
PACK3.DAT
PACK4.DAT
(2) Data text
Data field 1
Example of
T 1 0 0 9 1 S 1 2 3
contents
Every data field should be
1 to 99 digits long.
The total length of all data fields plus the number of the character count bytes* (=
the number of the fields) should be 255 bytes or less.
BHT-protocol automatically prefixes a character count byte in binary format to each data field.)
you transfer five 50-digit (50-byte) fields, for example, the total length of all data
fields is 250 (50 x 5) bytes and the number of the character count bytes is 5.
Accordingly, the total is 255, so you can transfer the file.
Data file name
(12 bytes)
. D A T
Data field 2
If a data field is less than
the maximum digits in
length, the lower blank
bytes will be filled with
space characters.
Number of fields
(2 bytes)
Number of data
texts
(5 bytes)
0 0 5 9 2
The number of data
texts should be 0 to
32767. If it is less than 5
digits, the upper blank
bytes will be filled with
zeros (0).
The number of fields should be 1
to 16. If it is less than 2 digits, the
upper blank byte will be filled with
zero (0).
If the data file name is less
than 12 characters in length,
the lower blank bytes will be
filled with space characters.
9 2 0 2 1 4 1 3 2 5
(* When transferring data files, the
96
Length of
data field 1
Length of
(2 bytes)
data field n
(2 bytes)
n
0 6 1 0
Every data field
should be 1 to 99
digits long. If it is less
than 2 digits, the
upper blank byte will
be filled with zero (0).
Data field n
When