TCP/ UDP Port Numbers Used for the Built-in EtherNet/IP Port

The following table shows TCP/UDP port numbers used by the built-in EtherNet/IP port, whether or not it is reserved by the system, whether or not the port number can be changed by the user, protocol used, default state, usage, and how to close the port from the default open state, for each application.
TCP/UDP ports (servers) other than those shown below are not used. For more information please see the CPU Unit Built-in Ethernet/IP Port user manual (W506).

Application	CPU Unit Model	UDP port	TCP Port	System Reserved	Port Number Change	Protocol used	Default	Usage	How to close the port from open state
FTP Server	All models	---	20	Reserved	Not Possible	FTP	Closed	Used when using the FTP server	---
		---	21	---	Not Possible		Closed		---
SSH/SFTP	All models	---	22	Reserved	Not Possible	SSH/SFTP	Closed	For maintenance	---
DNS client	All models	53	---	Reserved	Not Possible	DNS	Closed	Used when using the DNS client	---
BOOTP client	All models	68	---	Reserved	Not Possible	BOOTP	Closed	Used when using the BOOTP client	---
HTTP server	All models	80	---	Reserved	Not Possible	HTTP	Closed(Post v1.50)	Used for communications with Sysmac Studio pre v1.50 or when DIP switches set	---
NTP client	All models	123	---	---	Possible	NTP	Closed	Used when using the NTP client.	---
Application	CPU Unit Model	UDP port	TCP Port	System Reserved	Port Number Change	Protocol used	Default	Usage	How to close the port from open state
SNMP	All models	161	---	---	Possible	SNMP (SNMPv1, SNMPv2C	Closed	Used when using the SNMP agent	---
SNMP trap	All models	162	---	---	Possible		Closed	Used when using the SNMP trap	---
HTPPS server	All models	---	443	Reserved	Not Possible	HTTPS	Open	Used for communications with Sysmac Studio post 1.50	Make one of the following settings. Use the Packet Filter. *1 Set the DIP switch to Enable connections to the Sysmac Studio and NA that are not supporting secure communication.
Ethernet/IP tag data links	All models	2222	---	Reserved	Not Possible	CIP	Open	Used for Ethernet/IP tag data links	Set Built-in EtherNet/IP Port Settings - CIP Settings - CIP Message Server to Do not use on Sysmac Studio.
	All NJ series models	2223	---	Reserved	Not Possible		Open
Application	CPU Unit Model	UDP Port	TCP Port	System Reserved	Port Number Change	Protocol used	Default	Usage	How to close the port from the open state
FINS/UDP	All NJ-series models All NX1P2 NX102*2 NX701-1▢20*2	9600	---	---	Possible	FINS (Omron protocol)	Open	Used for FINS/UDP	Set Built-in EtherNet/IP Port Settings - FINS Settings - FINS/UDP to Do not use on the Sysmac Studio.
FINS/TCP	All NJ-series models All NX102*2 NX701-1▢20*2	---	9600	---	Possible		Open	Used for FINS TCP	Set Built-in EtherNet/IP Port Settings - FINS Settings - FINS/UDP to Do not use on the Sysmac Studio.
Sysmac Studio	All models	9600	---	Reserved	Not Possible		Open	Used for communication with Sysmac Studio	Use the Packet Filter *1
	CPU Units that support USB Port All NJ-series models All NX701*3	2224	---	Reserved	Not Possible		Closed*4		---
Application	CPU Unit Model	UDP Port	TCP Port	System Reserved	Port Number Change	Protocol used	Default	Usage	How to close the port from the open state
Maintenance	All models	---	9610	Reserved	Not Possible	TCP (Omron protocol)	Closed	For maintenance	---
CIP messages	All models	44818	44818	Reserved	Not Possible	CIP	Open	Used for CIP messages	Set Built-in EtherNet/IP Port Settings - CIP Settings - CIP Message Server to Do not use on Sysmac Studio.
OPC UA	CPU Units that support OPC UA NJ501-1▢00 NX102-▢▢▢▢*5 NX701-1▢▢▢*5	---	4840	---	Possible	OPC UA	Closed	Used for OPC UA	---
TCP/UDP message service	CPU Units that support TCP/UDP message service NX102-▢▢▢▢	64000	64000	---	Possible	TCP/UDP	Closed	Used when using the TCP/UDP message service	---
Application	CPU Unit model	UDP port	TCP port	System reserved	Port number change	Protocol used	Default	Usage	How to close the port from the open state
SECS/GEM connection service	CPU Units that support SECS/ GEM NJ501-1340	---	9700	Reserved	Not Possible	TCP.UDP (Omron Protocol)	Open	Used when using the SECS/GEM connection service.	Use the Packet Filter
		---	5000	---	Possible	SECS-II	Closed		---
DB connection service	CPU Units that support DB connection NJ501-XX20 NJ101-▢▢20 NX102-▢▢20 NX701-1▢20	---	9800	Reserved	Not Possible	TCP (Omron Protocol)	Open	Used when using the DB connection service.	Use the Packet Filter
		---	9801				Open
		---	9810				Open
		---	9811				Open
Application	CPU Unit model	UDP port	TCP port	System reserved	Port number change	Protocol used	Default	Usage	How to close the port from an open state
Robot Integration	CPU Units that support Robot Integrated Controller NJ501-R▢▢▢	1989	---	Reserved	Not Possible	UDP (Omron Protocol)	Open	Used for communications with ACE (including Application Manager) or Sysmac Studio.	Use the Packet Filter. To close the ports on the left at once, remove the SD Memory Card, execute clear all memory operation, then restart the Controller.
		1992	---				Open
		1997	1997			TCP/UDP (Omron Protocol)	Open
							Open
		65533	---			UDP (Omron Protocol)	Open
		65534	---				Open
		1990	---				Closed
		1993	---				Closed
		69	---			TFTP	Closed
		---	43234			TCP (Omron Protocol)	Closed
		---	48987				Closed

*1. Closing the port may prevent communications with the Sysmac Studio. Refer to Troubleshooting When You Cannot Go Online from the Sysmac Studio in the NJ/NX-series Troubleshooting Manual (Cat. No. W503) on how to make corrections.
*2. This port number is supported only on Port 2. It cannot be used on Port 1.
*3. Only if the CPU unit has USB port.
*4. Always closed for the built-in EtherNet/IP port. Opened for the USB port only.
*5. This port number is supported only on Port 1. It cannot be used on Port 2.