|All outer doors are locked and unlocked electrically. For safety reasons, locks can be operated manually with a key. This makes it possible to unlock the doors during a possible power failure.|
|The locks are connected to a P-NET slave module and are then controlled by messages sent from a master controller connected to P-NET.
The motor and micro switches for each lock are connected to a PD 3120 I/O, which is located close to the door. A calculator program in each module, takes care of the processing of the signals to and from the lock and switches.
|A set of status lamps and a beeper, indicating the current status of the doorlock and alarm system, is located at each door.|
International P-NET User OrganizationP.O. Box 192
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