Customer manual
LFM 4x Reader
RFID
WE GENERATE SOLUTIONS
HERMOS AG
Gartenstraße 19 • 95490 Mistelgau
Phone: +49 9279 991 - 0
LFM 4x Reader Rev1.4
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The checksum is not necessary when using the TCP/IP interface (No
transmission). The end character is only transmitted.
If the device is operated in ASC-W1 mode, the complete end packet is
transmitted (end character and 4 bytes checksum).
10.3 Data elements
The data elements that are used by default ASCII messages, which are described in the
message details section, are defined in this section.
Tuning value
2 Byte
The tuning value is a set value for the optimal antenna tuning. For optimum read and write
ranges, the value is automatically determined by the reader. The value is measured in 16
steps (0-F). He can also be targeted.
Example:
CMD
1 Byte
Command of the message, see table in Chapter “Commands“.
Data
16 Bytes
The data is represented in HEX format by 2 ASCII characters. The data always includes
every 8 bytes of the corresponding page of the transporter.
Example:
Transponder data in ASCII-Format
„12345678“
(8 bytes)
Transponder data in HEX-Format
0x31 0x32 0x33 0x34 0x35 0x36 0x37 0x38
Data in message
„3132333435363738“
(16 ASCII-characters)
„08“
…
automatic tuning from the reader
„10“
…
manual tuning 0x00
„1F“
…
manual tuning 0x0F