8-18 
 
8-1-4 Example of RS-485 communication position control 
1. Digital input pin definitions 
 
Servo ON (SON) 
+24V power output
DI power shared terminal
Abnormal alarm reset (ALRS) 
Internal position command selection 1 (POS1) 
Internal position command selection 2 (POS2) 
Internal position command selection 3 (POS3) 
Internal position command trigger (PTRG) 
Emergency stop (EMC)
Start returning to origin (SHOME)
External reference origin (ORG)
Internal position command pause (PHOLD) 
+24V power ground terminal 
R4 is 1.0KΩ when Vc=5V 
Servo ready (RDY) 
Servo abnormal (ALM) 
Origin return completed signal (HOME) 
Positioning completed signal (INP) 
Torque limiting (LM) 
P acting (PC) 
Left and right limit signal (LIT) 
Servo Soff signal (SOFF) 
Vc origin signal output