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Appendix F - The IO Terminal Block AXIS 2400 Administration Manual
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Appendix F - The IO Terminal Block
A 16-pin terminal block connector is provided for auxiliary IO connections to the AXIS 2400.
This appendix describes the additional functionality that this port provides.
Physical Connection
The Terminal Block connector provides
the interface to one relay switch output,
four digital photo-coupled inputs, RS
485 interface and auxiliary power.
Connector Pinout
A diagram for the auxiliary IO connector
and a pinout table are detailed below
Pin Function Description
1 Auxiliary AC Power Input Electrically connected in parallel with PS-D power connector, pins 1 &
2 provide an auxiliary connector for mains power to the unit.
2 Auxiliary AC Power Input
3 Input 3 - Photocoupler Anode (+) Photocoupled Input 3: Electrically isolated from the chassis and con-
nectors, this input can be supplied from an external DC voltage or
the DC Power Input/Output on pins 9 and 10.
4 Input 3 - Photocoupler Cathode (-)
5 Input 4- Photocoupler Anode (+) Photocoupled Input 4. As above.
6 Input 4 - Photocoupler Cathode (-)
7 RS 485 - B Serial Port1- RS485. A half duplex RS485 interface for controlling
auxiliary equipment.
Note:
Serial Port 1 is programmed as either
RS232 (COM1 Connector) or RS485 (Terminal Block Connector), via
the Web browser interface.
8 RS 485 - A
9 DC + Power (Input or Output) DC Power Input or Output: Used as an input, it supplies the Axis
2400 via a DC source; for example. a solar panel or a battery.
As an output, it can drive the photo coupler inputs or other equip-
ment; 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 unit chassis, and Ground on each serial port
and video input. See circuit diagram (below).
10 DC - Power (Input or Output)
11 Input 1 - Photocoupler Anode (+) Input 1 Photo coupler input. As Input 3.
12 Input 1 - Photocoupler Cathode (-)
13 Input 2 - Photocoupler Anode (+) Input 2 Photo coupler input. As Input 3.
14 Input 2 - Photocoupler Cathode (-)
15 Relay Switch Relay switch. Electrically isolated from chassis and connectors.
16 Relay Switch