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Serial Number; Id Number - Siemens AR6181-MX Installation And Configuration Manual

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Serial number


ID number

Siemens Building Technologies
Fire & Security Products
The serial number is used as ID card number.
The serial number is a unique number of a transponder or a transponder
The length of the serial number differs depending on the transponder technology.
For more information please refer to chapter 8.1 Qualified transponder types (ID
The serial number stored in the transponder/ ID card is saved in binary format. The
card reader converts this binary value into a decimal value. The conversion from
binary to decimal is limited to max. 40 bits of the binary value. This means that
serial numbers longer than 40 bits are used only partially, preferably the low-order
40 bits.
A test selection of the higher-order bits can be performed in the card reader. This
test selection helps to avoid the detection of two or several different cards with the
same 40-bit long serial number. Test selection and analysis of the higher-order bits
of a serial number can be performed using UID_MASK and UID_PATTERN (for
more information please refer to chapter 10 under
The following parameters are required when using the serial number:
With UID_START (higher-order half byte) and
UID_LNG (lower-order half byte),
start byte at which the serial number is used and
number of bytes of the serial number (max. 5 bytes -> 40-bit)
0x05 Use start at byte 0 and 5 byte;
40 lowest-order bits of the serial number
(e.g. Mifare UltraLight)
0x04 Use start at byte 0 and 5 byte;
32 lowest-order bits of the serial number (e.g. Mifare)
The ID number is an identification number written to the memory area of the ID
card (= transponders). For this purpose, the writing of an ID number is considered
as personalizing. The ID number can be freely defined and has to be based on the
same system-wide rules.
These rules are in general:
Uniqueness within a system
Standardized structure
Standardized set of values, e.g. only numerical values
Standardized data format; e.g. BCD format (4-bit)
The memory area on the card is defined as a block in the available EEProm
memory of the respective transponder technology. Depending on the transponder
type used, access to the data is via "public mode" (direct addressing of memory
block without access protection) or "safe mode" (direct addressing of memory block
with access protection authentication).
Transponders / ID cards
and C06).


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