User's Manual

5 OPERATION
36
HF5x Transponder Reader (SECS1-Protocol), Release 1.4
A list is an ordered set of elements, where 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.
5.4.2 Data Items
The formats represent arrays of types: <type>[number of elements]
where <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 != 00
<Boolean1 0x00>
10 21 Binary
Byte sequence of the
length “Length”
<B1 0x01>
20 41 ASCII
Printable ASCII
signs
<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 >