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12 Communications Performance
NX-series EtherCAT Coupler Unit User’s Manual (W519)
12-1
P
e
rform
ance o
f Proces
s Dat
a Com
m
u
n
icat
ion
s
12
12-
1-1
I/O R
espon
se T
ime
s for
Synchr
onous I/O R
efreshing
Tmax-InProc
This is the longest input data processing time of all of the NX Units in all of the EtherCAT Slave Ter-
minals in the same EtherCAT network.
The input data processing time of an NX Unit (Tnx-InProc) is the time from reading the status of the
NX Unit input terminals into memory until preparations to pass the read data to the EtherCAT Cou-
pler Unit are completed. There is a unique value for each type of NX Unit. With synchronous I/O
refreshing, this is the time from the NX Unit input synchronization timing until preparations to pass
the data are completed. The NX Unit input synchronization timing is when all of the NX Units that
use synchronous input refreshing in all of the EtherCAT Slave Terminals on the same EtherCAT net-
work simultaneously read the input data.
The NX Unit input data processing time (Tnx-InProc) depends on the NX Unit.
The following table gives Tnx-InProc for each type of NX Unit.
Tmax-OutProc
This is the longest output data processing time of all of the NX Units in all of the EtherCAT Slave Ter-
minals in the same EtherCAT network.
The output data processing time of an NX Unit (Tnx-OutProc) is the time from when the NX Unit
reads the output data that was sent by the EtherCAT Coupler Unit until preparations to update the
output data are completed. There is a unique value for each type of NX Unit. With synchronous I/O
refreshing, each NX Unit completes processing before the NX Unit output synchronization timing.
The NX Unit output synchronization timing is when all of the NX Units that use synchronous output
refreshing in all of the EtherCAT Slave Terminals on the same EtherCAT network simultaneously
update the output data.
The NX Unit output data processing time (Tnx-OutProc) has a different definition or value for each
type of NX Unit.
The following table gives the value or definition of Tnx-OutProc for each type of NX Unit.
If a formula rather than a value is given for Tnx-OutProc in the above table, refer to the user’s man-
uals for individual NX Units or to the
NX-series Data Reference Manual
(Cat. No. W525) for the val-
ues of the items to make the calculation.
Type of NX Units
Tnx-InProc
Remarks
Digital Input Units
0 [
μ
s]
---
Analog Input Units
0 [
μ
s]
---
Temperature Input Units
---
Not relevant because the Units support only Free-Run
refreshing.
Incremental Encoder
Input Units
73 [
μ
s]
The same value applies to external inputs.
SSI Input Units
55 [
μ
s]
---
Pulse Output Units
35 [
μ
s]
This is the value for external inputs.
Type of NX Units
Tnx-OutProc
Remarks
Digital Output Units
0 [
μ
s]
---
Analog Output Units
Conversion time
×
Number of points
The conversion time and number of points depend on the
model of the Unit.
Pulse Output Units
65 [
μ
s]
The same value applies to external outputs.
Summary of Contents for NX-ECC201
Page 38: ...Sections in this Manual 36 NX series EtherCAT Coupler Unit User s Manual W519...
Page 46: ...1 EtherCAT Networks 1 8 NX series EtherCAT Coupler Unit User s Manual W519...
Page 56: ...2 Features and System Configuration 2 10 NX series EtherCAT Coupler Unit User s Manual W519...
Page 82: ...4 Part Names and Functions 4 14 NX series EtherCAT Coupler Unit User s Manual W519...
Page 100: ...5 Designing the Power Supply System 5 18 NX series EtherCAT Coupler Unit User s Manual W519...
Page 214: ...9 Setting Up Slave Terminals 9 44 NX series EtherCAT Coupler Unit User s Manual W519...
Page 254: ...11 EtherCAT Coupler Unit Functions 11 30 NX series EtherCAT Coupler Unit User s Manual W519...
Page 278: ...12 Communications Performance 12 24 NX series EtherCAT Coupler Unit User s Manual W519...
Page 340: ...14 Maintenance and Inspection 14 8 NX series EtherCAT Coupler Unit User s Manual W519...
Page 400: ...Appendices A 60 NX series EtherCAT Coupler Unit User s Manual W519...
Page 401: ...Index 1 NX series EtherCAT Coupler Unit User s Manual W519 I Index...
Page 405: ......