Io-Link Master Unit Functions - Omron NX Series User Manual

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IO-Link Master Unit Functions

This section provides an overview of the functions of the IO-Link Master Unit.
Function name
Commu- Cyclic commu-
nications nications
Message com-
munications
Communications mode
settings
Digital inputs for pin 2
Automatic baud rate set-
ting for IO-Link communi-
cations
Connected device verifi-
cation
NX/GX-series IO-Link System User's Manual (W570)
Description
I/O data (process data) in the IO-Link devices is cyclically
exchanged with the IO-Link Master Unit as the IO-Link com-
munications master.
At the same time, this data and the status of the IO-Link
Master Unit are cyclically exchanged with the controller, with
the IO-Link Master Unit operating as a slave of the control-
ler.
Cyclic communications can be used to check the amount of
detection performance deterioration in devices, and to check
changes in usage conditions, such as the amount of incident
light for photoelectric sensors, stability detection margins,
and excessive proximity for proximity sensors.
The controller can send messages (commands) to the IO-
Link Master Unit and receive the response from the IO-Link
Master Unit.
The IO-Link Master Unit can also function as a gateway to
send messages (commands and responses) between the
controller and the IO-Link devices.
During operation, you can change and adjust device param-
eters, such as threshold settings, tuning execution, and ON-
delay time changes, from a program.
Or, during operation, you can check the internal status, such
as the operating times of devices.
You can select any of the following modes for each port:
IO-Link Mode, SIO (DI) Mode, SIO (DO) Mode, or Disable
Port.
This allows you to combine IO-Link communications and
digital I/O in a single terminal or unit.
In IO-Link Mode, you can perform digital input with pin 2
while performing IO-Link communications.
The IO-Link Master Unit automatically matches the specific
baud rates (COM1, COM2, or COM3) of the IO-Link devices
to communicate with the IO-Link devices.
Therefore, it is not necessary to set the baud rate of the
connected device for each port.
This function is used to verify the configuration of IO-Link
devices that are connected to the IO-Link Master Unit
against the registered IO-Link Device Configuration Settings
when the power supply is turned ON.
The user can enable or disable connected device verifica-
tion.
1 Introduction to IO-Link Systems
Reference
1-4-2 Cyclic Com-
munications on
page 1-23
4-1 Outline of I/O
Data on page 4-2
6-2 Cyclic Commu-
nications on page
6-4
1-4-3 Message
Communications on
page 1-24
6-3 Message Com-
munications on
page 6-7
7-1 Communica-
tions Mode Settings
on page 7-2
1-3-1 Communica-
tions Specifications
on page 1-13
7-2 Connected De-
vice Verification on
page 7-7
1
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