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I/O Terminal connector pinout table
Pin
Function
1
Output A
2
Output B
3
Digital Input 1- Photocoupler Anode (+)
4
Digital Input 1 - Photocoupler Cathode (-)
5
Digital Input 2 - Photocoupler Anode (+)
6
Digital Input 2 - Photocoupler Cathode (-)
7
RS-485-A (non-inverting)
8
RS-485-B (inverting)
9
DC + Power Output
10
GND
I/O Terminal connector schematic diagram
Example schematic diagram of the AXIS 223M terminal connector - showing possible
applications.
Description
On the external device output terminals (A and B), there is no distinction
between positive and negative (+ and -). The terminals use a photocou-
pler and are electrically isolated from the other internal circuitry.
The maximum load should not exceed 100mA and the maximum voltage
should be not more than 50VDC or 35VAC.
Photocoupled Input 1. Electrically isolated from the chassis and connec-
tors, this input can be supplied from an external DC voltage or the DC
Power Input/Output on pins 9 (DC+) and 10 (GND).
Photocoupled Input 2. As above.
A half-duplex RS-485 interface for controlling auxiliary equipment.
This can drive the photocoupler inputs or other equipment. The output
voltage level is 3.0 V. A maximum current of 100mA can be sourced from
the DC output.
Ground.
1
o
2
o
3
o
4
o
5
o
6
o
A
7
o
RS-485
8
o
B
9
+
10
-
AXIS 223M - Unit Connectors
Optional
o
Relay
o
Switch
o
o
24V DC
Switch, etc.
+
_
External Device
o
Appliance
o o
Mains Power
Active
Control
Device
51
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