Instruction manual

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2 SYSTEM CONFIGURATION
(3) Select to number of the synchronous encoder modules
Synchronous encoders are available in voltage-output type (incremental),
differential-output type (incremental) and serial absolute output type.
Q172DEX can be connected to only serial absolute output type.
When using the incremental synchronous encoder of voltage-output type or
differential-output type, must be used Q173DPX or built-in interface in Motion
CPU of Q173DSCPU/Q172DSCPU. (The synchronous encoders are used in the
SV22 virtual mode or SV22 advanced synchronous control.)
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 Applicable types Connectable synchronous encoder
Q173DSCPU
Q171ENC-W8
Up to 12 modules (Q172DEX: Up to 6 modules )
Q172DSCPU
Q173DCPU(-S1)
Q170ENC
Q172DCPU(-S1) Up to 8 modules (Q172DEX: Up to 4 modules )
• Tracking enable signal
Tracking enable signal of Q172DEX is used in high-speed reading function or
high-speed input request signal.
The external input signal of the synchronous encoder is indicated below.
External input signal of the
synchronous encoder
Item
Number of points on
one Q172DEX
Tracking enable signal input
High-speed reading function
2 points
High-speed input request signal