STE 80722 
– 50 – 
5.3.3  Details of Commands 
 
: Automatic Operation Start  (Host computer 
→
 Controller)  RN 
 
 
    RN 
 
 
The RN (Automatic Operation Start) command is a command given by the host 
computer to the controller telling the controller to start up the program.  If, after 
stopping the program with the SP (Automatic Operation Stop) command, one sends 
the RN command again, the robot will start up from the step immediately following 
the step at which it was stopped. 
 
Protocol 
 
 
 
(1)  Normal operation 
  OK  
 
 
  In automatic operation 
 
(2)  Error (Cannot receive request) 
  NG  
 
 
 
 
 
RN 
 (Automatic operation 
start-up directive) 
Normal response (Automatic 
operation normal commencement) 
 
 
 
Request not accepted (Servo OFF, 
etc.) 
The controller cannnot start.