Nikon NWL860 Series Manual page 18

4-7-5. Length Byte Count
Defines the number of bytes making up the length byte.
0 = Illegal, data format error
1 = 1-byte binary length byte (max. 255)
2 = 2-byte binary length byte (max. 64 K)
3 = 3-byte binary length byte (max. 7.99 M)
For list format, length represents the number of elements (lists or items) in the list.
The length byte of 0 has a special meaning, which is defined by the individual specification.
4-7-6. Length Byte
Defines the byte count required for the following data.
When the length byte is made up of more than one byte, the bytes are sent out in order, from
the upper byte.
The length byte consists of 1 to 3 bytes.
4-7-7. List
Defines the number of component data (elements) when the data consists of data in different
formats.
The format of the list header is the same as that of the item header.
Individual component data are defined by the item header.
4-7-8. Examples of Item and List
(a) Item containing one binary code 10101010
bit 87654321
00100001
00000001
10101010
(b) Item containing three ASCII characters A, B, and C
01000001
00000011
01000001
01000010
01000011
(c) Item containing (b) above and three binary numbers in 2-byte format
00000001
00000100
01000001
00000011
01000001
01000010
01000011
01101001
00000010
xxxxxxxx
xxxxxxxx
Item with length byte 1
Byte length 1
Data byte
Item ASCII, length byte 1
Byte length 3
ASCII character A
ASCII character B
ASCII character C
List, length byte 1
Number of elements 4
Item ASCII, length byte 1
Byte length 3
ASCII character A
ASCII character B
ASCII character C
Item 2-byte integer, length byte 1
Byte length 2
Upper byte for a number X
Lower byte for a number X
Chapter 3 Interface Specification
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