Brooks Automation
278580 Revision A
75
LF80C ZeniD RFID Reader
7 Operation
Product Manual
7.3 Operation of SECS Protocol
A list is an ordered set of elements, whereby an element can be either an
item or a list. The list header has the same form as an item header with
format type 0. However, the length byte refers to the number of elements
in the list rather than to the number of bytes.
Data items
The formats represent arrays of types: <type>[number of elements],
whereby <type> is one of the following:
Oct-
code
Hex-
code
Format
Meaning
Example
00
01
List
List element with
the number of
the "Length" data
elements
<L2>
<A "Hello">
<B 0x00>
11
25
Boolean
1-byte Boolean
false = 00
true = 01
<Boolean1 0x00>
10
21
Binary
Byte sequence
of the length
"Length"
<B1 0x01>
20
41
ASCII
Printable ASCII
characters
<A "Hello">
31
65
I1
1-byte signed
integer
<I1 123>
32
69
I2
2-byte signed
integer
<I2 -12345>
34
71
I4
4-byte signed
integer
<I4 2147483647>
30
61
I8
8-byte signed
integer
<I8
931372980293834>
51
A5
U1
1-byte unsigned
integer
<U1 0>
52
A9
U2
2-byte unsigned
integer
<U2 #empty>
54
B1
U4
4-byte unsigned
integer
<U4 429489725>
50
A1
U8
8-byte unsigned
integer
<U8
763468676756767>
40
91
F8
8-byte floating
point
<F8 1.223 e204>
44
81
F4
4-byte floating
point
<F4 -1.23 >
