Omron NX Series User Manual

EtherNet/IP Unit are being backed up in the built-in non-volatile memory. This data will not be
backed up correctly if the power supply is turned OFF. Also, a minor fault level Controller error will
occur the next time you start operation, and the
NX-series EtherNet/IP Unit will stop the operation.
• Do not disconnect the cable or turn OFF the power supply to the Controller while transferring the
settings of the NX-series EtherNet/IP Unit from the Support Software.
General Communications
• In the data link communications, create a user program that uses receive data only when there is no
current error in the data link originator device with reference to the
EIP_Comm1Status.TargetNodeErr[255] (CIP Communications1 T
arget Node Error Information) or
EIP_Comm2Status.TargetNodeErr[255](CIP Communications2 Target Node Error Information).
If there is an error in the source device, the data for the data link may contain incorrect values.
• Before you start the communications of data that is required to operate the equipment, confirm that
the data reached the proper destination after you set the IP Address.
• Unexpected operation may result if inappropriate data link tables are set. Even if appropriate data
link tables have been set, confirm that the controlled system will not be adversely affected before
you transfer the data link tables. The data links start automatically after the data link tables are
transferred.
EtherNet/IP Communications
• Make sure that the communications distance, number of nodes connected, and method of connec-
tion for EtherNet/IP are within specifications. Do not connect EtherNet/IP communications to Ether-
CAT or other networks. An overload may cause the network to fail or malfunction.
•
All related EtherNet/IP nodes are reset when you transfer settings for the NX-series EtherNet/IP Unit
(including IP addresses and tag data links settings). The settings can only be enabled after the re-
set. Confirm that the system will not be adversely affected by resetting nodes before you transfer the
settings.
• Confirm that the system will not be adversely affected before you start the tag data link communica-
tions.
• Confirm that the system will not be adversely affected before you stop the tag data link communica-
tions.
• Confirm that the system will not be adversely affected by resetting nodes before you transfer the tag
data link settings and routing tables.
• To ensure tag set concurrency, match the settings of the task that updates a tag set on the X Bus
with the refreshing task for variables.
• If EtherNet/IP tag data links (cyclic communications) are used with a repeating hub, the communica-
tions load on the network will increase. This will increase collisions and may prevent stable commu-
nications. Do not use repeating hubs on networks where tag data links are used. Use an Ethernet
switch instead.
Restoring Data
• You cannot back up, restore, or compare data for disabled Units. After you restore data, sufficiently
confirm that operation is correct before you start actual operation.
Precautions for Safe Use
21
NX-series EtherNet/IP Unit User's Manual (W627)

Omron NX Series Specifications

General

Programming Languages	Ladder, Structured Text, Function Block Diagram, Sequential Function Chart
Communication Ports	Ethernet, USB, RS-232C, RS-485
Memory Capacity	Varies by model
Program Memory	Varies by model
Data Memory	Varies by model
Operating Temperature	0°C to 55°C
Power Supply	24 VDC
Ethernet Ports	1 or 2 ports (depending on model)
USB Ports	1 or 2 ports (depending on model)
Dimensions	Varies by model
Weight	Varies by model