Ping Command; Using The Ping Command - Omron sysmac NX102-9 Series Owner's Manual

6 Testing Communications
6-1 Testing Communications
If the basic settings (in particular the IP address and subnet mask) have been made correctly for the
built-in EtherNet/IP port, then it is possible to communicate with nodes on the EtherNet/IP network. This
section describes how to use the PING command to test communications with the built-in EtherNet/IP
port.
6-1-1

PING Command

The PING command sends an echo request packet to a remote node and receives an echo response
packet to confirm that the remote node communications are normal. The PING command uses the
ICMP echo request and responses. The echo response packet is automatically returned in the ICMP.
The PING command is normally used to check the connections of remote nodes when you set up a net-
work. The built-in EtherNet/ IP port supports both the ICMP echo request and response functions. If the
remote node returns a normal response to the PING command, then the nodes are physically con-
nected correctly and Ethernet node settings are correct.
Built-in EtherNet/IP port
6-1-2

Using the PING Command

The built-in EtherNet/IP port automatically returns the echo response packet in response to an echo
request packet sent by another node (e.g., host computer).
6-2
(e.g., host computer)
TCP
ICMP
Echo request
Echo response
NJ/NX-series CPU Unit Built-in EtherNet/IP Port User's Manual (W506)
Remote node
UDP
IP
Ethernet