User`s manual

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2 SYSTEM CONFIGURATION
(4) Connection of incremental synchronous encoder
Incremental synchronous encoders are available in voltage output/Open collector
type and differential output type. Since these types differ in connection method,
design according to the connection method of section 2.4.6 (5).
Serial absolute synchronous encoder (Q170ENC) 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 Synchronous encoder
Q173DCPU
Up to 12 modules
( Q173DPX: Up to 4 modules )
Q172DCPU
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.
The external input signal of the incremental synchronous encoder is
indicated below.
This signal is used as the input start signal or high-speed reading function
from incremental synchronous encoder.
External input signal of the
incremental synchronous encoder
Item
Number of points on
one Q173DPX
Tracking enable signal input
Input start function from incremental
synchronous encoder
Each 1 point
( Total 3 points )