Euchner EKS FSA with Ethernet Interface Manual do Utilizador descarregar pdf (Página 34)

Manual EKS Electronic-Key Adapter Ethernet

8.3 Commands for writing and reading a read/write Electronic-Key

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 Electronic-Key-System

Command message

⎯⎯⎯⎯⎯⎯⎯⎯⎯→

Reply message

←⎯⎯⎯⎯⎯⎯⎯

Information!

On read/write Electronic-Keys with 116 bytes, the memory is organized in 4-byte blocks. This means a

multiple of 4-byte sized blocks must always be written.

The start address must be given in the range byte number 0 to byte number 112, always in 4-byte steps

(byte number 0, 4, 8 ... 112)!

However, during reading it is possible to access the memory by bytes without the above mentioned

restriction for writing.

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Euchner EKS FSA with Ethernet Interface Manual do Utilizador Página 34