====== IO Control ======

===== FADUINO-18TA =====

^ Direction         ^ Range       ^ Voltage                                    ^ Description                                                                    ^
| Digital Input      | Ports 2~9    | 0V or 24VDC \\ (20V ~ 28V) HIGH  | 24V is HIGH \\ 0V is LOW                       |
| Digital Output       | Ports 10~13  | Output Sink                              | HIGH creates a path to ground.                                   |
| Analog Input  | Channels 0~5  | 0~5VDC                                  | VA = analogRead(A0) -> Read from channel 0 \\ VA = analogRead(A4) -> Read from channel 4  |

===== FADUINO-32TA =====

^ Direction         ^ Range       ^ Signal Type ^ Description                                                                    ^
|Digital Input | Ports 22~37| 0V or 24VDC \\ (20V ~ 28V) HIGH | 24V is HIGH \\ 0V is LOW |
|Digital Output | Ports 38~51 |Output Sink | HIGH creates a path to ground|
|Analog Input | Channels 0~7 |Channels 0~3 0~20mA \\ Channels 4~7 0~10VDC|VA = analogRead(A0) -> Read from channel 0 \\ VA = analogRead(A4) -> Read from channel 4|



===== FADUINO-12RA =====

^ Direction         ^ Range       ^ Signal Type ^ Description                                                                    ^
|Digital Input | Ports 4~11 | 0V or 24VDC \\ (20V ~ 28V) HIGH | 24V is HIGH \\ 0V is LOW |
|Digital Output | Ports 22~25 |Relay 10A) Output|HIGH turn relay ON \\ LOW turns relay OFF|
|Analog Input | Channels 0~7 | Channels 0~3 0~20mA \\ Channels 4~7 0~10VDC|VA = analogRead(A0) -> Read from channel 0 \\ VA = analogRead(A4) -> Read from channel 4|


===== FADUINO-24RA =====

^ Direction         ^ Range       ^ Signal Type ^ Description                                                                    ^
|Digital Input | Ports 30~45| 0V or 24VDC \\ (20V ~ 28V) HIGH | 24V is HIGH \\ 0V is LOW |
|Digital Output |Ports 22~29 |Relay (10A) Output |HIGH turns relay ON \\ LOW turns relay OFF|
|Analog Input | Channels 0~7 |Channels 0~3 0~20mA \\ Channels 4~7 0~10VDC|VA = analogRead(A0) -> Read from channel 0 \\ VA = analogRead(A4) -> Read from channel 4|

===== Example =====

<code c>
int val = 0;                // Variable for input
int AD_val = 0;             // Variable for Analog input
pinMode(38, OUTPUT);        // Configure pin 38 as output
val = digitalRead(22);      // Read from input pin 22
digitalWrite(38, val);      // Write `val` to output pin 38
AD_val = analogRead(A0);    // Read analog input A0 and store to variable `AD_val` 
</code>

===== Status LED =====

All FA-DUINO models have a status LED for displaying simple operating conditions.  It is connected to port 13.

<code c>
digitalWrite(13, HIGH);     // Turn the status LED on
delay(1000);                // Delay for 1 second
digitalWrite(13, LOW);      // Turn the status LED off
delay(1000);                // Delay for 1 second 
</code>

[[faduino:index|FADUINO]]