Chapter 3 Wiring  ASDA-B2 
3-20     Revision May, 2018 
Signal  Pin No  Function 
Wiring 
Diagram 
(Refer to 
3.3.3) 
Power 
VDD 17 
VDD is the +24 V power provided by the 
drive and is for Digital Input (DI) and 
Digital Output (DO) signal. The maximum 
current is 500 mA. 
- 
COM+ 
COM- 
11 
14 
COM+ is the common input of Digital 
Input (DI) and Digital Output (DO) voltage. 
When using VDD, VDD should be 
connected to COM+. If not using, it needs 
to apply the external power (+12 V ~ + 24 
V). Its positive end should connect to 
COM+ and the negative end should 
connect to COM-. 
GND  19  VCC voltage is based on GND. 
There are numerous operation mode of this servo drive (please refer to Chapter 6.1). 
Each operation mode needs different I/O signal. In order to use the terminal in a more 
efficient way, the selection of I/O signal has to be programmable. That is to say, users 
can choose the desired DI/DO signal to meet the demand. Basically, the default setting 
of DI/DO signal has already have the appropriate function which can satisfy the demand 
of normal application.