Controller Communications With Ethernet/Ip - Omron NX Series User Manual

1 Introduction to IO-Link Systems
• Communications Methods
• Cyclic Communications
Target master and device
NX-type IO-Link
Master Unit
GX-type IO-Link
Master Unit
• Message Communications
Target master or de-
vice
NX-type IO-Link Master
Unit
GX-type IO-Link Master
Unit
I/O device connected to
an NX-type IO-Link
Master Unit
I/O device connected to
a GX-type IO-Link Mas-
ter Unit
*1. Unit version 1.12 or later of the NJ/NX-series CPU Unit is required to use these instructions.
Using a Controller from Another Company
For a system configuration that uses EtherCAT communications with a controller from another compa-
ny, refer to A-1-1 Using a Controller from Another Company with EtherCAT Communications on page
A-2.
1-2-3

Controller Communications with EtherNet/IP

The controller can be an NJ/NX-series CPU Unit, an NY-series Industrial PC, a CJ/CP/CS-series PLC,
or a controller from another company.
1-10
•
OMRON IO-Link
I/O allocation settings from the Sysmac Studio are not nec-
devices or IO-Link essary for an IO-Link device with an IO-Link input data size
devices from other
of 2 bytes or less, and an IO-Link output data size of 2 bytes
companies or less.
•
I/O allocations from the Sysmac Studio is necessary for all
other IO-Link devices.
Communications instructions used
Use the following communications instruc-
tions:
•
NX_WriteObj (Write NX Unit Object) in-
struction
•
NX_ReadObj (Read NX Unit Object) in-
struction
Use the following communications instruc-
tions:
•
EC_CoESDOWrite (Write EtherCAT
CoE SDO) instruction
•
EC_CoESDORead (Read EtherCAT
CoE SDO) instruction
Use the following communications instruc-
tions:
•
IOL_WriteObj (Write Device Object) in-
*1
struction
•
IOL_ReadObj (Read Device Object) in-
*1
struction
Required action
Required action
You must make EtherCAT configu-
ration settings and Slave Terminal
configuration settings from the Sys-
mac Studio.
You must make EtherCAT configu-
ration settings from the Sysmac
Studio.
You must make the EtherCAT con-
figuration settings and Slave Termi-
nal configuration settings from the
Sysmac Studio.
You must make EtherCAT configu-
ration settings from the Sysmac
Studio.
NX/GX-series IO-Link System User's Manual (W570)