MATRIX 400™ REFERENCE MANUAL
56
4
4.5 INPUTS
There are two optocoupled polarity insensitive inputs available on the reader: Input 1
(External Trigger) and Input 2, a generic input:
The External Trigger can be used in One Shot Mode or in Phase Mode. Its main functions
are:
acquisition trigger in One Shot Mode
reading phase-ON/reading phase-OFF command in Phase Mode
The main functions of the general purpose Input 2 are:
second external trigger in Phase Mode
match code storage command when the Match Code option is enabled
The electrical features of both inputs are:
V
AB
= 30 Vdc max.
I
IN
= 10 mA (reader) + 12 mA (CBX) max.
The active state of these inputs are selected in software. Refer to the VisiSet™ Help On
Line.
An anti-disturbance filter is implemented in software on both inputs so that the minimum
pulse duration is
0.5 milliseconds. This value can be increased through the software
parameter Debounce Filter, see the Digital I/O folder in the VisiSet™ Help On Line for further
details.
These inputs are optocoupled and can be driven by both NPN and PNP type commands.
NOTE
Polarity insensitive inputs assure full functionality even if pins A and B are
exchanged.
The connections are indicated in the following diagrams:
CBX100/500
Function
+V
Power Source - External Trigger
I1A
External Trigger A (polarity insensitive)
I1B
External Trigger B (polarity insensitive)
-V
Power Reference - External Trigger
The yellow Trigger LED (Figure 19, 5) is on when the active state of the External Trigger
corresponds to ON.
