Installation guidelines
39
Fig. 20 Block diagram
№
2
Fig. 20 shows a more advanced but also a more high-cost circuit
connection. The advantage of this scheme is that it uses only one reader
installed in the card collector. Wiegand interface provides a possibility to
connect several identical ACS controllers to one reader in parallel.
ACS controllers are connected to different inputs of the card
collector. Memory of one of the controllers contains data on permanent
card; memory of the second controller - on guest card. Reader transmits
card code to both controllers and the card collector receives a
corresponding signal depending on the type of card.
