analogWriteMax() returns the maximum value available for the specified output channel.

uint16_t analogWriteMax(uint8_t ch)

void setup() {
  analogWriteFreq(3, 1000);  // Set the PWM frequency of the specified output channel.
 
  uint16_t maxValue = analogWriteMax(3);  // Return the maximum value available for the specified output channel.
 
  analogWrite(3, maxValue / 4);  // D46 / OC5A, approx. 25%
  analogWrite(4, maxValue / 2);  // D45 / OC5B, approx. 50%
  analogWrite(5, maxValue);      // D44 / OC5C, 100%
}
 
void loop() {
}

• analogWrite(0~15, value) is for Y analog output, and analogWrite(20~31, value) is for K/K2 high-speed pulse output.
• High-speed pulse GPIOs are K D130~D135 and K2 D130~D141, fixed regardless of the number of Y modules.
• Analog output uses raw 0~65535 values; high-speed pulse output uses Arduino-compatible 0~255 values.
• analogWriteInit(), analogWriteFreq() and analogWriteMax() are for Y analog output channels. Do not use them for high-speed pulses 20~31.
• Do not use analogWrite(130~141, value).
• The 3 channels belonging to the same timer share TOP, prescaler and frequency.
• Calling analogWriteFreq() automatically changes TOP, so it also changes the maximum duty value for subsequent analogWrite() calls.
• Use the return value of analogWriteFreq() or analogWriteMax() to check the current maximum duty value.
• Check for timer conflicts when using these commands with other PWM, pulse or high-speed counter functions that use Timer1, Timer3, Timer4 or Timer5.
• MPAINO analog output modules may require a separate power supply and DIP switch settings.
• The actual voltage or current output range must match the module DIP switches, supply, wiring and input specifications of the connected equipment.

← Built-in Command List