Axis Communications 2401, 2400 manual Appendix G The I/O Terminal Block, Connector Pinout

AXIS 2400/2401 Admin Manual The I/O Terminal Block 53

Appendix G - The I/O Terminal Block

Typically used in association with programming scripts for developing applications for motion detection, event triggering, time lapse recording, alarm

notification via e-mail, picture storage to FTP locations and a variety of other functions; the 16-pin I/O Terminal Block is located on the rear panel and provides the interface to: a single relay switch output, four digital photo-coupled inputs, an RS-485 interface, and auxiliary power.

This appendix describes the pinout, interface support and the control and monitoring functions provided by this connector.

Connector Pinout

The pinout for the Terminal Block (illustrated right) and signaling details for each pin is fully described in the table below:

Pin	Function	Description
1	Auxiliary AC Power Input	Electrically connected in parallel with PS-D power connector, pins 1 & 2
2	Auxiliary AC Power Input	provide an auxiliary connector for mains power to the unit.
3	Digital Input 3 - Photocoupler Anode (+)	Photocoupled Input 3: Electrically isolated from the chassis and connec-
4	Digital Input 3 - Photocoupler Cathode (-)	tors, this input can be supplied from an external DC voltage or the DC
		Power Input/Output on pins 9 and 10.
5	Digital Input 4- Photocoupler Anode (+)	Photocoupled Input 4. As above.
6	Digital Input 4 - Photocoupler Cathode (-)
7	RS-485 - B (inverting)	Serial Port 1- RS-485. A half-duplex RS-485 interface for controlling
8	RS-485 - A (non-inverting)	auxiliary equipment. Note: Serial Port 1 is programmed as either
		RS-232 (COM1 Connector) or RS-485 (Terminal Block Connector), via
		the browser interface.
9	DC + Power (Input or Output)	DC Power Input or Output: Used as an input, this supplies the Axis 2400
10	DC - Power (Input or Output)	via a DC source; for example a solar panel or a battery.
		As an output, it can drive the photo coupler inputs or other equipment;
		such as an IR-sensor. The output voltage level is dependent upon the
		input voltage to the unit. A maximum current of 50mA can be sourced
		from the DC output.
		Pin 10 is connected to the unit chassis, and Ground on each serial port
		and video input. See circuit diagram (below).
11	Digital Input 1 - Photocoupler Anode (+)	Input 1 Photo coupler input. As Input 3.
12	Digital Input 1 - Photocoupler Cathode (-)
13	Digital Input 2 - Photocoupler Anode (+)
		Input 2 Photo coupler input. As Input 3.
14	Digital Input 2 - Photocoupler Cathode (-)
15	Relay Switch	Relay switch - electrically isolated from chassis and connectors.
16	Relay Switch
Note:	For compatible replacement connectors, contact http://www.phoenixcontact.com, quoting:
	MC1.5/8-ST-3.81 (art no 1803633).