====== CFMEGA1 =====
This is an Arduino Mega-compatible CPU module. It is designed with a compact form factor so that it can be used practically in small spaces.

  * This module must be positioned on the far left. Attach I/O modules to the right side.
  * Up to 16 I/O modules can be connected to one CPU module.

===== System Specifications =====
  * MCU: Mega2560
  * Program memory: 256 KB
  * SRAM memory: 8 KB
  * EEPROM: 4 KB

===== Device Specifications =====
  * Power supply voltage: **DC 12–24 V**
  * Power supply capacity selection: Use a power supply with enough capacity to handle the total current consumed by the connected I/O modules. If the total number of connected modules is 8 or fewer, a 24 V, 1 A SMPS is suitable. If the total number of connected modules is more than 8, use a 24 V, 3 A SMPS.
  * Communication: RS232C x 2
  * User program LED: 13 = LED


===== Description of Each Part =====

{{:modularfaduino:cfmega1.jpg?600|}}



===== Power Input =====

Apply a voltage between DC 12–24 V to the power supply terminals at the bottom of the terminal block.




===== Example Programs =====

**   - STATUS LED Blinking ** : This program blinks the STATUS LED.

<code c>
const int StatusLED = 13;
void setup() {
    pinMode(StatusLED, OUTPUT);
}
void loop() {
    digitalWrite(StatusLED, HIGH);
    delay(1000);
    digitalWrite(StatusLED, LOW);
    delay(1000);
} 
</code>


** - RS232 Communication ** : This is an echo communication program for channel 1 (Tx1, Rx1). Connect Tx1 and Rx1 to each other before running the program.

<code c>
void setup() {
    Serial.begin(9600);
    Serial1.begin(9600);
}
void loop() {
 if (Serial1.available() > 0) {
     char rx_Byte = Serial1.read();
     Serial.print("I received: ");
     Serial.print(rx_Byte);
     
     Serial1.print(rx_Byte);
  }
} 
</code>



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