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1 Features and System Configuration
NX-series Position Interface Units User’s Manual (W524)
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1 Feat
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f Posi
tion
Int
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Unit
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-1-2
T
ypes and F
eatur
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n Interface Un
its
An Incremental Encoder Input Unit converts pulse input signals from an incremental encoder and
counts the number of pulses.
Use an Incremental Encoder Input Unit to enable the Controller to identify control positions based on
the number of encoder pulses. You can also latch the count value with an external input.
There are two types of Incremental Encoder Input Units, depending on the input specifications of the
encoder pulses: Units that take a voltage input and Units that take a line receiver input.
*1. The count value of the encoder (pulses) is sent to the Controller every control period.
Features
• One or two counters are provided in each Incremental Encoder Input Unit to count pulses in 32-bit
ranges.
• The models with a voltage input can count at up to 500 kHz and the model with a line receiver
input can count at up to 4 MHz.
Incremental Encoder Input Units
Controller
Count value
Control
(synchronization)
period
Target position
Example:
EtherCAT
EtherCAT
Coupler
Unit
Counter
Encoder input
Pulse output
Pulse generation
Pulses
Motor and drive
Encoder
Pulses
*1
0
1
4
7
10
...
Controller
count value
Control period
0
1
2
3
4
5
6
7
8
9 10 11 12 ... ... ...
Count value
Unit
Pulse input
Summary of Contents for NX-EC0112
Page 13: ...11 Manual Structure NX series Position Interface Units User s Manual W524...
Page 34: ...Revision History 32 NX series Position Interface Units User s Manual W524...
Page 36: ...Sections in this Manual 34 NX series Position Interface Units User s Manual W524...
Page 78: ...3 Part Names and Functions 3 8 NX series Position Interface Units User s Manual W524...
Page 108: ...4 Installation and Wiring 4 30 NX series Position Interface Units User s Manual W524 Unit...
Page 114: ...4 Installation and Wiring 4 36 NX series Position Interface Units User s Manual W524...
Page 126: ...5 I O Refreshing Methods 5 12 NX series Position Interface Units User s Manual W524...
Page 340: ...8 Pulse Output Units 8 76 NX series Position Interface Units User s Manual W524...
Page 462: ...Appendices A 74 NX series Position Interface Units User s Manual W524...
Page 463: ...I 1 I NX series Position Interface Units User s Manual W524 Index...
Page 466: ...I 4 NX series Position Interface Units User s Manual W524 Index...