Omron NX Series User Manual

Precautions for Correct Use
As in the following figure, if the connection was configured so that packets are transferred via the
EtherNet/IP port on the NX-series EtherNet/IP Unit on both the FTP client and FTP server sides,
the FTP communications cannot be performed in either of Active Mode or Passive Mode.
192.168.60.1
192.168.61.1
192.168.70.1
192.168.71.1
192.168.250.1
192.168.251.1
192.168.40.200
192.168.50.1
192.168.51.1
POWER
PORT2
192.168.41.200
NX502 CPU Unit
FTP server
Port 2 Port 2 Port 2
Port 1
Port 1 Port 1
CPU Unit
Hub
Hub
NX-series EtherNet/IP Unit
FTP client
instructions
IP Forward: Use
Unit No. 3 Unit No. 2 Unit No. 1
Port 1
Port 2
Hub
IP Forward: Use
NX-series EtherNet/IP Unit
8-5-2
Port Forward on Which an External Device Is a Client
In port forward where the external device is a client, an access from an external device such as a
computer is made to the server of the CPU Unit through the EtherNet/IP port on the NX-series Ether-
Net/IP Unit. In this case, when the TCP or UDP port that is used with TCP/IP communications is speci-
fied, TCP or UDP frames received by the NX-series EtherNet/IP Unit are transferred to the CPU Unit.
The TCP and UDP ports to be used must be specified for each EtherNet/IP port on the NX-series
EtherNet/IP Units. The external device that is the client must specify the IP address of the EtherNet/IP
port on the NX-series EtherNet/IP Unit to pass through.
To specify the TCP and UDP ports, select EtherNet/IP Port Settings - TCP/IP Settings - TCP/UDP
Port Transfer on the Sysmac Studio.
If the Do not use Option for IP Forward is selected under EtherNet/IP Port Settings - TCP/IP
Settings - Port Forward on the Sysmac Studio, the port forward is not performed. The frame received
by the NX-series EtherNet/IP Unit is discarded.
The following figure shows the case where the IP address 192.168.40.1 of the EtherNet/IP port 1 on
the NX-series EtherNet/IP Unit with unit number 4 is specified from the FTP client of PC1. The frame
received by the NX-series EtherNet/IP Unit is transferred to the CPU Unit.
8 TCP/IP Functions
8-23
NX-series EtherNet/IP Unit User's Manual (W627)
8-5 Port Forward via NX-series EtherNet/IP Units
8
8-5-2 Port Forward on Which an External Device Is a Client

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