User Manual

48/68 Revision 2.1 December 2009
• GPIO: Port has no predefined function; it can be driven remotely by Host PC via API.
• Output Trigger: when Theft is detected (EAS or AFI signal setting the alarm), the Port
Signal level matches the Active Level Setting (“Low” or “High”). The output voltage level of
the port should match the active voltage to set the external alarm device wired up.
Whenever the GPIO is set as an Output Trigger, It is possible to set a pulse Width and a Pause in
milliseconds. In Figure 24, the Pulse Width is set to 100ms. This means that whenever theft
detection occurs, the signal on port#2 will go from low to high for a minimum time of 100ms. If no
further detection occurs before the 100ms timing laps, then signal will drop to low level.
Whenever after the Pause timing, if a new detection occurs, signal will rise again to high level.
In the particular case of the Pause Timing set to 0ms, whenever detection will occur timing equal to
Pulse setting will be added up so that the active level will stay high as long as detection will occur
(so called retrigger configuration).
Setting pause timing to a value different from zero will force the output signal to low level for Pause
time after the Pulse time set, before being triggered again by a subsequent detection.
Figure 24: GPIO Pulse & Pause Field
Figure 25: Peripherals & GPIO Green Connector Pin Out & Location
Pin # Function
1 Ambient Light +24V
2 Ambient Light 0V Ground
3 Alarm +24V
4 Alarm 0V Ground
5 GPIO #1 Open Collector
6 GPIO #1 0V Ground
7 GPIO #2 Open Collector
8 GPIO #2 0V Ground