bool DigitalIoExists ( RSIMotorGeneralIo  bitNumber  ) 

Description:
DigitalIoExists determine if a particular Dedicated output bit exists for a motor.
Parameters:
bitNumber A RSIMotorGeneralIo value.
Returns:
(bool) True if bit exists for motor, false if not.
Sample Code:
  if(axis->DigitalIoExists(RSIMotorGeneralIo0) == true)
  {
    printf("General Motor IO 0 exsists.\n");
  }