Omron NX-ILM400, User Manual

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5 I/O Refreshing
NX-series IO-Link Master Unit User’s Manual (W567)
5-
3 Co
mm
unic
atio
n
s Perfo
rman
ce
5
5-
3-1 Maximum I/O Response
T
ime When
the Ether
CA
T C
oupler Unit Is Connected
5-3 Communications Performance
This section describes the I/O response times of the IO-Link Master Unit.
The I/O response time is the time required for the following processing: The CPU Unit processes an
external signal input to one NX Unit, and another NX Unit outputs the processed result as an external
signal.
This section describes the maximum I/O response time of the IO-Link Master Unit when an EtherCAT
Coupler Unit is connected.
For information on timing charts and calculation methods for I/O response times for NX Units in Ether-
CAT Slave Terminals, refer to
Free-Run Refreshing I/O Response Times in the NX-series EtherCAT
Coupler Unit User's Manual (Cat. No. W519).
The following NX Unit parameters are necessary to calculate I/O response times.
• Tnx-InProc: Input data processing time of the NX Unit
• Tnx-Indelay: Input delay time of the NX Unit
• Tnx-OutProc: Output data processing time of the NX Unit
• Tnx-Outdelay: Output delay time of the NX Unit
The parameter values and calculation methods for the IO-Link Master Unit are given below.
 Input Data
5-3-1 Maximum I/O Response Time When the EtherCAT Coupler Unit Is
Connected
I/O data type IO-Link process input data
from IO-Link communica-
tions in IO-Link Mode
Digital input data for pin 2
in IO-Link Mode
Digital input data in SIO
(DI) Mode Parameter
Tnx-InProc 0[ms]
Tnx-Indelay
0.072 × (Total size (in bytes)
of IO-Link process input data
from IO-Link communica-
tions from port 1 to port 4) +
2.61+ IO-Link communica-
tions cycle
*1
[ms]
*1. For information on how to determine the IO-Link communications cycle, refer to 5-3-4 Determining the IO-Link
Communications Cycle on page 5-11.
0.072 × (Total size (in bytes) of IO-Link process input data
from IO-Link communications from port 1 to port 4) + 2.61+
Input filter time [ms]
Example: When port 1
through port 4 are all used by
IO-Link devices (sensors) with
an IO-Link input data size of 2
bytes, and the IO-Link com-
munications cycle for those
IO-Link devices (sensors) is
2.1 [ms]: 0.072 × 2 bytes × 4
d 2.61 + 2.1 = 5.286
[ms] Example: When port 1
through port 4 are all used
by IO-Link devices (sensors)
with an IO-Link input data
size of 2 bytes and no input
filter is used: 0.072 × 2 bytes
× 4 d 2.61 = 3.186
[ms] Example: When port 1
through port 3 are used by
IO-Link devices with an
IO-Link input data size of 2
bytes and port 4 is used by a
non-IO-Link device with no
input filter: 0.072 × 2 bytes ×
3 d 2.61 = 3.042
[ms]