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Common TOP Server Driver Ports (Channel & Device)

A quick reference for users looking to quickly connect to devices with default settings to help reduce experiencing communication issues due to Firewalls.


Driver Default Channel Port Default Device Port Valid Range Notes
Allen Bradley – Rockwell Logix Family
 N/A 44818 (TCP/IP) 1-65535
The Allen-Bradley ControlLogix Unsolicited Driver currently limits the number of channels to one. If the network adapter and port conflicts with another application on the host machine, the driver cannot accept inbound EtherNet/IP connections. 
DNP Client Ethernet
0
(TCP/ Source Port)
N/A
0-65535 (Source Port)
1-65535 (Device Port)
When the selected protocol is TCP, the Source Port parameter is disabled. When the selected protocol is UDP, setteing the Source Port to 0 causes an implicit bind using a unqiue souce port assigned by the system. 
Mitsubishi CNC Ethernet N/A 5001(UDP) Check device manual for range Recommended default port is used because it is always available for programming and monitoring tools.
Mitsubishi Ethernet N/A
5000 (UDP)
5001 (TCP)
 Check device manual for available ports
TCP/IP is less efficient than UDP and requires special ladder to handle network error recovery. If planning to communicate with devices on a remote network, TCP/IP requires that multiple ports be configured in the relay device. This, UDP is recommended whereever possible. 
Modbus Ethernet TCP/IP 502 502 0-65535
If the Driver System Tag "Port" is used, the Device Port number setting is changed. The Port system tag allows a client application to read and write the Port Number Setting. Writes to this system tag cause the driver to diconnect from the device and attempts to reconnect to the written port number
Omron FINS Ethernet 9600 N/A 1-65535
Source and Destination port numbers must be the same. Users can create multiple channels int he server that utilize a unique port number to optimize communication performace. Example: Channel1.device1 uses port 9601 and Channel2.device2 uses port 9602
Omron NJ Ethernet N/A 44818 (TCP) 0-65535
For more information, refer to the Connection Path Specification section of the Omron NJ Ethernet Driver Help File.
Siemens TCP/IP Ethernet N/A
102 (TSAP)
1099 (NetLink)
 1-65535 (TSAP)
It is recommended that the default port be used for most applications, where the server and the PLC exist on the same network. For an application using the Internet through firewalls and advanced routers, the port number cabn be changed to allow these operations to occur. In most cases, however, the PLC only accepts a connection on port 102/1099 and may require router forwarding. 
Siemens TCP/IP Server Ethernet 102 N/A 0-65535
Devices must be configured to connect to the Channel Port. Messages sent to all other ports are ignored by the driver. Non-standard values may be required by routing and firewall issues for the Channel Port. 
Siemens S7 Plus Ethernet N/A 102 1-65535
It is recommended that the default port be used for most applications, where the server and the PLC exist on the same network. For an application using the Internet through firewalls and advanced routers, the port number can be changed to allow these operations to occur. In most casesm, however, the PLC only accepts a connection on port 102/1099 and may require router forwarding.