MorphoAccess® VP Series - User Guide
Section 11: Compatibility with an Access Control System
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ORPHO DOCUMENT
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EPRODUCTION AND
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ISCLOSURE
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ROHIBITED
SSE-0000082427-01
January 2011
LED IN feature
Description
When this feature is activated, the terminal waits for an answer from a distant system,
before granting the access. If no answer is received the access is denied even of the
biometric check is positive.
This feature is to be use in addition to the
Sending the access control result to a distant
system
function.
Figure 39: LED IN feature
For more information about this interface, please refer to
MorphoAccess® VP Series
Installation Guide
.
Process
•
If the user is recognized, the terminal sends the user’s identifier to the central
access controller (within the access result message).
•
Then the terminal starts to wait, during an adjustable timeout, for the closure of a
switch between LED1 and GND, or between LED2 and GND.
•
During terminal wait period, the controller performs its own access rights checks
for the identified user.
•
Depending on the result of the result, the controller close the switch between
LED1 and GND wires to grant the access, or closes the switch between LED2 and
GND to deny the access. In case of time-out, the access is also denied.
•
The terminal notify the result of the global access control check to the user, and
return to “wait for access request” state, as soon as LED1 and LED2 wires are
reset to default state again.
Using LED1 signal only
If the controller provides only a “access granted” output, then the relay contact should
be connected between LED1 and GND wires.
The terminal uses the wait for LED1/LED2 signal timeout as “access denied” answer.
