Function description
Operating Manual PIT m4SEU
1004648-EN-02
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Download procedure
[a]
"1" signal at IDsync (control line):
A valid transponder key is present at the PITreader.
[b]
"1" signal at IDrequest (handshake line):
The controller requests a data bit at data line IDdata.
[c]
"1" signal at IDresponse (handshake line):
The PIT m4SEU confirms the validity of the data bit at data line IDdata.
[d]
"0" signal at IDrequest (handshake line):
The controller confirms that it has read the requested data bit without error.
[e]
"0" signal at IDresponse (handshake line):
The PIT m4SEU is ready to issue a new data bit at data line IDdata.
[f]
"0" signal at IDsync (control line):
The transponder key was removed.
[g]
The controller must request all the data bits of a Key ID number (Bit27 … Bit00).
Only then is it possible to start downloading a new Key ID number. The end of
the download is indicated by the signal extension (t
IDend
) at IDresponse.
