Omron NY532-5400 User Manual page 42

1 Introduction
 Packet Filter Function
This function checks IP packets received from a network to determine whether they should be either
received or relayed to another network.
It allows the Controller in an NY-series Industrial PC to limit the access to any machine network in
which a Controller exists via the internal port, based on a condition predefined by the user.
The function checks the IP packets received by the internal port of the Controller through the internal
communications network. It determines whether they can pass through the internal port based on a
user-specified condition.
By default, IP packets from only networks whose source IP address is set to the IP address of the
internal port will be received; otherwise, IP packets will be relayed to another network.
Machine
network
EtherNet/IP
 NAT Function
This function converts the source IP address in IP packets to a different IP address when relaying IP
packets from one network to another.
Enabling the NAT function allows the built-in EtherNet/IP port to automatically convert the source IP
address in IP packets to its IP address.
You can disable the NAT function if there is no need to convert the source IP address in IP packets.
Converts IP address
Machine
network
EtherNet/IP
1-16
NY-series Industrial PC
Controller
Delay
Delay
Built-in EtherNet/IP port
NY-series Industrial PC
Controller
Delay
Delay
Built-in EtherNet/IP port
NY-series Industrial Panel PC / Industrial Box PC Built-in EtherNet/IP Port User's Manual (W563)
Internal
Windows
communications
network
Internal port
Internal
Windows
communications
network
Internal port
Ethernet port
Ethernet port