EXTERNAL INTERFACE DESCRIPTION
- Quattro Technical Information Manual
14
No.
Name
Description
1
+5V
5VDC
2
GND
Ground
3
GPI0
General purpose input 0
4
RTN
Return
5
GPI1
General purpose input 1
6
RTN
Return
7
OUTPUT1.1
SS-Relay 1 Contact 1
8
OUTPUT1.2
SS-Relay 1 Contact 2
9
OUTPUT2.1
SS-Relay 2 Contact 1
10
OUTPUT2.2
SS-Relay 2 Contact 2
Tab. 3.3: GPIO Connector Poles
Input signal
To have a valid input signal, apply a voltage between 4V and 48V to the pin indicated by GPI0 (or GPI1) and
its return (RTN) pin.
The most simply way to have a valid input signal is connecting the +5V pin, present on the terminal block
connector, to the GPI0 pin through a switch that enables the input signal when it is closed. The connection
between ground (GND) and return (RTN) is also required to complete the circuit.
Fig. 3.4: GPIO Input Signal
It is possible to verify the correct functioning of the circuit by connecting the reader to the CAEN RFID Easy
Controller software, Tools-I/O management section:
GPI0 corresponds to GPIO0 of the Easy Controller software
GPI1 corresponds to GPIO1 of the Easy Controller software
