Function description
Operating Manual PIT m4SEU
1004648-EN-02
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}
The display element for the newly selected operating mode is lit constantly and the dis-
play element for the last confirmed operating mode goes out.
Undoing an operating mode preselection
By the user:
}
Operate the pushbutton for the selected operating mode (corresponding display element
is lit continuously)
}
Insert the transponder key in the event of OM fallback and service fallback; permission
must be equal to or higher than the previously removed permission.
By the controller:
}
"0" signal at the keylock input
Please note that removing the transponder key on the PITreader does not reset the operat-
ing mode preselection.
NOTICE
The operating mode preselection is
not
a safety-related function. Switching
of the operating mode has to be validated in accordance with the require-
ments.
Output
SIo0 ... SIo3
Stop MSO pre-
selection
User change
MSO request
ack
ack
acknowledge MSO pre-
selection
keylock
Key
Key 2 inserted
Push button
Output
MSO
display
MSO
t ack
MSO1
MSO1
MSO2
MSO1
2
MSO1 selected [8h]
MSO2 selected [9h]
[5h]
MSO1 selected [8h]
MSO1
Fig.: Exiting the operating mode preselection after the pushbutton has been operated, with DIP switch setting [D5] to
[D8]
