Aperio
®
Online Mechanical Installation Guide, Document No: ST-001323-B Date: 21 februari 2014
Aperio
®
Online
28
AH15 (Wiegand)
Configuring and connecting the AH15
communication hub to the EAC includes setting
the DIP switches, connecting it to the Wiegand
interface bus and connecting it to power supply,
according to the applicable section below.
Configuring the DIP switches
Details for the Wiegand interface signals:
8-24V
GND
GREEN
RED
DATA0
DATA1
RS485 B
RS485 A
1
2
3
4
5
6
7
8
ON
DIP Abbr.
Description
8
TERM Not applicable for Wiegand. Set to OFF.
7
UP
Not applicable for Wiegand. Set to OFF.
6 DOWN Not applicable for Wiegand. Set to OFF.
5
A4
ON = Starts in pairing mode.
OFF = Normal use.
4
A3
Controls byte order of transmitted
credentials.
OFF => The byte order is left as is.
ON => The byte order is reversed compared
to what is received as input to the Hub
Wiegand EAC interface component.
3
A2
Controls addition of parity bits on
transmitted credentials. One even parity
bit before and one odd parity bit after the
actual credentials.
OFF => Addition of parity is disabled.
Credentials are transmitted as received.
ON => Addition of parity bits is enabled.
2
A1
Reserved for future use. Set to OFF.
1
A0
Controls use of Red LED signal for access
decision.
ON = Red LED is used.
OFF = Red LED is ignored.
Default configuration
According to the figure, all DIP switches in position
OFF on the communication hub give a default
Wiegand configuration that will fit most EAC
systems. However, customizing the configuration
can result in better performance.
DIP 1 - Selecting LED input signals and access
decision
If the EAC system can send a signal that actively
asserts an access denied decision (Red LED), DIP 1
should be set to ON. This will give:
∙
Shorter response time at a denied access.
∙
Possibility to use override credentials in the lock.
The flowcharts below explain how the LED input
signals are used to derive an access decision. The
OFF and ON variants are depicted.
