TTL RX TX able to send data but can't read from servo motor ; arduino

i am using this motor in my project .
when i am writing data to motor using arduino via tx and rx … it is responding to data character like “R1212” … but while i am trying to read the value from motor … i am not able to get anything …
please help me … i am stuck in my project work

void setup()
Serial.println(“Y”); // to reset the values of servo motor
Serial.println(“R1212”); // go to this relative angle … ( and it worked )

// here is the problem while reading from motor .

Serial.println(“R”); // comman byte to be read

int c =;

void loop()


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