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6 Testing Communications
6-2
CJ-series EtherNet/IP Units Operation Manual for NJ-series CPU Unit (W495)
6-1
Testing Communications
If the basic settings (in particular the IP address and subnet mask) have been made correctly for the
EtherNet/IP Unit, then it is possible to communicate with nodes on the EtherNet/IP network. This sec-
tion describes how to use the PING command to test communications with the EtherNet/IP Unit.
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 EtherNet/IP Unit 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 connected cor-
rectly and Ethernet node settings are correct.
The EtherNet/IP Unit automatically returns the echo response packet in response to an echo request
packet sent by another node (e.g., host computer).
6-1-1
PING Command
6-1-2
Using the PING Command with the EtherNet/IP Unit
Echo response
Echo request
Remote node
(e.g., host computer)
EtherNet/IP Unit
Ethernet
ICMP
IP
UDP
TCP
Содержание SYSMAC CJ1W-EIP21
Страница 8: ...Manual Structure 6 CJ series EtherNet IP Units Operation Manual for NJ series CPU Unit W495...
Страница 10: ...Sections in this Manual 8 CJ series EtherNet IP Units Operation Manual for NJ series CPU Unit W495...
Страница 20: ...Read and Understand this Manual 18 CJ series EtherNet IP Units Operation Manual for NJ series CPU Unit W495...
Страница 42: ...Revision History 40 CJ series EtherNet IP Units Operation Manual for NJ series CPU Unit W495...
Страница 68: ...1 Introduction 1 26 CJ series EtherNet IP Units Operation Manual for NJ series CPU Unit W495...
Страница 80: ...2 Installing Ethernet Networks 2 12 CJ series EtherNet IP Units Operation Manual for NJ series CPU Unit W495...
Страница 130: ...6 Testing Communications 6 4 CJ series EtherNet IP Units Operation Manual for NJ series CPU Unit W495...
Страница 206: ...7 Tag Data Link Functions 7 76 CJ series EtherNet IP Units Operation Manual for NJ series CPU Unit W495...
Страница 246: ...8 Message Communications 8 40 CJ series EtherNet IP Units Operation Manual for NJ series CPU Unit W495...
Страница 266: ...9 FTP Server 9 20 CJ series EtherNet IP Units Operation Manual for NJ series CPU Unit W495...
Страница 374: ...13 Troubleshooting 13 56 CJ series EtherNet IP Units Operation Manual for NJ series CPU Unit W495...
Страница 431: ...Index 1 CJ series EtherNet IP Units Operation Manual for NJ series CPU Unit W495 I Index...
Страница 436: ...Index 6 CJ series EtherNet IP Units Operation Manual for NJ series CPU Unit W495 Index...
Страница 437: ......