Commands For Writing And Reading An Electronic-Key Read/Write - EUCHNER EKS Manual

Manual EKS Electronic-Key Adapter Ethernet TCP/IP
8.3

Commands for writing and reading an Electronic-Key read/write

Write and read processes are always initiated by the PC/control system using a "command message."
The command message and reply message are also packed as user data in the TCP/IP frame.
The Electronic-Key-System then sends a reply message to the PC/control system.
PC/control system
Command message
Information!
On the Electronic-Key read/write with 116 bytes freely programmable, the memory is organized in 4-
byte blocks. This means the start address for writing must be given in the range byte number 0 to byte
number 112, always in 4-byte steps (byte number 0, 4, 8 ... 112). Also a multiple of 4-byte-sized blocks
must always be written (4, 8, 12 ... 116 bytes)!
However, during reading it is possible to access the memory byte-by-byte without the above-mentioned
restriction for writing.
The Electronic-Key read/write also has a unique 8-byte serial number that is permanently written to the
memory during the Electronic-Key production process. The serial number can therefore not be changed.
This serial number is used for secure distinction of every single Electronic-Key. It is necessary that all 8
bytes are completely evaluated for secure distinction. The serial number is appended to the freely
programmable memory. The serial number can be read by entering the start address byte number 116
and the number of bytes 8.
2100420-03-05/19 Subject to technical modifications
Electronic-Key-System
Reply message
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