12. Communication Design Examples 12.4 Communication between PLC and Delta ASD-A Series AC Servo Drive (Positioning, MODRD/MODWR) AC Servo drive control panel Power normal Start normal Positioning completed Servo ON Positioning enabled SON CTRG Wiring for Delta ASD-A Series AC Servo Drive: Power normal Positioning completed Control Purpose: z Reading the target position of AC servo drive (incremental position) by MODRD instruction. z Setting the target position of AC servo drive (incremental position) by MODRW instruction. z Enabling the starting and positioning actions of AC servo drive by the input points DI1~ DI2 when corresponding buttons are pressed.
z Showing the status of AC servo drive through indicators by the output points DO1~DO3 Parameter Settings for ASD-A Series AC Servo Drive: DVP-PLC Application Examples 12-14 es AC power CN1 VDD SON COM+ DI1 DI2 CTRG COM- U V L1 W L2 R S 7 T 6 5 24V 4 17 3 11 4.7K 2 9 4.7K 10 45 Error counter Electric gear CN1 24V DO1+ Pow DO1- 24V DO2+ Sta DO2- 24V DO3+ Pos DO3- CN2 Encoder CN1 7 DO1+ 6 DO1- 5 DO2+ 4 DO2- 3 2 DO3+ DO3- CN1 VDD 17 COM+ 11 DI1 DI2 9 10 4.7K COM- 45 Parameter Set value Explanation P1-01 1 Control Mode and Output Direction P1-33 1 Position Control Mode (Pr) P2-10 101 Digital Input Terminal 1 (DI1) P2-11 108 Digital Input Terminal 2 (DI2)