Instruction manual
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2 SYSTEM CONFIGURATION 
(3) Connection of manual pulse generator 
Manual pulse generators of the voltage-output/open-collector type and 
differential-output type can be connected. Both connection methods are different. 
(Refer to this section (5).) 
When the manual pulse generator is connected to the Q173DPX, it cannot be 
connected to the built-in interface in Motion CPU. 
Motion CPU module  Connectable manual pulse generator 
Q173DSCPU 
Up to 3 modules 
(Q173DPX: Up to 1 module) 
Q172DSCPU 
Q173DCPU(-S1) 
Q172DCPU(-S1) 
(4) Connection of incremental synchronous encoder 
Incremental synchronous encoders of the voltage-output/Open-collector type and 
differential-output type can be connected. Both connection methods are different. 
(Refer to this section (5).) 
Serial absolute synchronous encoder not connected to Q173DPX. Then connect 
to Q172DEX. 
In addition, the usable numbers of synchronous encoders differ depending on the 
modules. 
The following number of serial absolute synchronous encoders and incremental 
synchronous encoders combined can be used. 
Motion CPU module  Connectable synchronous encoder 
Q173DSCPU 
Up to 12 modules 
(Q173DPX: Up to 4 modules) 
Q172DSCPU 
Q173DCPU(-S1) 
Q172DCPU(-S1) 
Up to 8 modules 
(Q173DPX: Up to 3 modules) 
• Tracking enable signal 
Tracking enable signal of Q173DPX is used to start the input from incremental 
synchronous encoders in the external input mode for the clutch. 
The external input signal of the incremental synchronous encoder is indicated 
below. 
This signal is used as the input start signal, high-speed reading function or 
high-speed input request signal from incremental synchronous encoder. 
External input signal of the 
incremental synchronous encoder
Application 
Number of points on 
one Q173DPX 
Tracking enable signal input 
Input start function from incremental 
synchronous encoder 
Each 1 point 
(Total 3 points) 










