Axis Communications 212 PTZ 212 PTZ/-V - User's Manual - Page 40

AXIS 212 PTZ/-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 • Ground (GND) The terminal connector is used in applications - for example, motion detection, event triggering, time lapse recording, alarm notification via email, and image storage to FTP locations. • Input - for connecting for example, a push button. If the button is pressed, the state changes and the input becomes active (shown under Event Configuration > Port Status). • Output - connects for example, 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: Pin Function 1 GND 2 3.3V DC Description Ground 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 output 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. Connect input/output devices to the camera as follows: 1. Attach the cables for the device securely to the supplied green connector block. 2. Once the cables are connected, push the connector block into the green terminal connector on the camera. I/O terminal connector 40