Hello all. Im trying to connect Yaskawa v1000 to arduino via rs485 ...I have 2 pcb MAX485..
Текстов блок
#define SerialControlPin 44
#define SerialControlPin2 46
#define RS485Transmit HIGH
#define RS485Receive LOW
void setup()
{
Serial.begin(9600);
pinMode(SerialControlPin, OUTPUT);
pinMode(SerialControlPin2, OUTPUT);
digitalWrite(SerialControlPin, RS485Receive);
digitalWrite(SerialControlPin2, RS485Transmit);
Serial1.begin(9600);
delay(2000);
}
void loop()
{
// byte msg[] = {0x01, 0x08 , 0x41,0x42,0x43,0x44,0x45,0x46,0x47,0x48};
// uint16_t CRC = ModRTU_CRC(msg, 10);
byte request[] = {0x01, 0x08, 0, 0, 0xA5, 0x37, 0xDA, 0x8D}; // Test loop code
// byte request[] = {0x01, 0x10, 0x00, 0x01, 0x00, 0x02, 0x04, 0x00, 0x01, 0x02, 0x58, 0x63, 0x39}; // Change to 60Hz and turn on
//byte request[] = {0x01, 0x10, 0x00, 0x01, 0x00, 0x02, 0x04, 0x00, 0x00, 0x02, 0x58, 0x32, 0xF9}; // Change to 60Hz and turn off
// Serial1.write(msg, 10);
// Serial1.write((byte) CRC);
Serial1.write(request, 8);
Serial1.flush();
delay(10);
while(Serial1.available())
{
Serial.print(Serial1.read(), HEX);
Serial.print(" ");
}
Serial.println();
delay(5000);
}
uint16_t ModRTU_CRC(byte buf[], int len)
{
uint16_t crc = 0xFFFF;
for (int pos = 0; pos < len; pos++) {
crc ^= (uint16_t)buf[pos]; // XOR byte into least sig. byte of crc
for (int i = 8; i != 0; i--) { // Loop over each bit
if ((crc & 0x0001) != 0) { // If the LSB is set
crc >>= 1; // Shift right and XOR 0xA001
crc ^= 0xA001;
}
else // Else LSB is not set
crc >>= 1; // Just shift right
}
}
// Note, this number has low and high bytes swapped, so use it accordingly (or swap bytes)
return crc;
}
