Axis Communications 216FD/FD-V - Manual (Page 45)

46 AXIS 216FD/FD-V - The I/O Terminal Connector
The I/O Terminal Connector
Pinout and Interface
The 4-pin I/O terminal connector provides the interface to:
• 1 transistor output
• 1 digital input
• auxiliary power and GND
The terminal connector is used in applications for e.g. motion detection, event triggering,
time lapse recording, alarm notification via email, image storage to FTP locations, etc.
• Input - for connecting e.g. a push button. If the push button is pressed, the state
changes and the input becomes active (shown under Event Configuration > Port
Status).
• Output - connects e.g. an alarm device that can be activated by Output buttons
on the Live View page, or by an Event Type. The output will show as active
(Event Configuration > Port Status) if the alarm device is activated.
I/O terminal
connector
I/O terminal connector:
Pin Function Description
1
GND
2 3.3V DC Can be used to power auxiliary equipment, max 50mA.
3 Digital Input Connect to GND to activate, or leave floating (or unconnected) to deactivate.
4 Transistor Output With a maximum load of 50mA and a maximum voltage of 24V DC, this out-
put has an open-collector NPN transistor with the emitter connected to the
GND pin. If used with an external relay, a diode must be connected in parallel
with the load, for protection against voltage transients.