ION EXTERNAL INTERFACES DESCRIPTION
- Ion Technical Information Manual
13
GPIO ports
The Ion R4301P reader has 13 GPIO bi-directional pins to be used to control external device or to send trigger signals to
the reader. The default configuration of all the GPIO lines after a power on reset or a general reset is set to Input.
The configuration of each GPIO line can be changed individually using the
API - CAEN RFID SDK (Software Development
Kit)
, the web configuration interface, the Easy Controller software or the configuration console (see §
Ion GPIO
chapter
page 29 for further details).
In the case a GPIO line is configured as an output line, the pin is an open drain port with 12mA current sinking
capability and an internal 10kΩ pull-up resistor to 5Vdc.
Fig. 3.3: Ion R4301P GPIO Output Configuration Equivalent Schematic
In case a GPIO line is configured as an input line, the pin is a logic port with Schmitt trigger input with a voltage range
from 0V to 5V.
Fig. 3.4: Ion R4301P GPIO Input Configuration Equivalent Schematic
The reader supply voltage is available on the pin #15 of the GPIO connector (DC_BYPASS, connected to pin #2 of the
power supply connector) in order to supply external equipment with an overall maximum current need of 500mA.
