List of TCP and UDP port numbers. This is a list of TCP and UDP port numbers used by protocols of the transport layer of the Internet protocol suite for the establishment of host to host connectivity. Originally, port numbers were used by the Network Control Program NCP in the ARPANET for which two ports were required for half duplex transmission. Later, the Transmission Control Protocol TCP and the User Datagram Protocol UDP needed only one port for full duplex, bidirectional traffic. The even numbered ports were not used, and this resulted in some even numbers in the well known port number range being unassigned. The Stream Control Transmission Protocol SCTP and the Datagram Congestion Control Protocol DCCP also use port numbers. They usually use port numbers that match the services of the corresponding TCP or UDP implementation, if they exist. The Internet Assigned Numbers Authority IANA is responsible for maintaining the official assignments of port numbers for specific uses. However, many unofficial uses of both well known and registered port numbers occur in practice. AllenBradley 1609 UPS Driver OPC Server Vendor Endorsed Protocol AllenBradley 1609 UPS Driver OPC Server Supported Devices Standard Driver AllenBradley 1609. Download BACnet Protocol Stack for free. BACnet Data Communication Protocol for Building Automation and Control Networks see www. This. This utility logs the traffic of a BACnet MSTP serial line and saves the traffic in a. Wire Shark. This utility needs to be. Similarly many of the official assignments refer to protocols that were never or are no longer in common use. This article lists port numbers and their associated protocols that have experienced significant uptake. Table legendedit  Official Port is registered with IANA for the application. Unofficial Port is not registered with IANA for the application. Multiple use Multiple applications are known to use this port. Well known portseditThe port numbers in the range from 0 to 1. They are used by system processes that provide widely used types of network services. On Unix like operating systems, a process must execute with superuser privileges to be able to bind a network socket to an IP address using one of the well known ports. Well known ports. Port. TCPUDPDescription. IANA status. 0NANAIn programming APIs not in communication between hosts, requests a system allocated dynamic port4NA0. Reserved. Reserved. Reserved. Official. TCPAssigned. TCP Port Service Multiplexer TCPMUX. Historic. Both TCP and UDP have been assigned to TCPMUX by IANA,1 but by design only TCP is specified. Official. Reserved. Reserved. Unassigned. Official. TCPUDPRemote job entry. Official. 6Reserved. Reserved. Unassigned. Official. 7TCPUDPEcho Protocol67Official. Reserved. Reserved. Unassigned. Official. UDPDiscard Protocol9Official. UDPWake on LAN1. Unofficial. Reserved. Reserved. Unassigned. Official. TCPUDPActive Users systat service1. Official. 12. Reserved. Reserved. Unassigned. Official. 13. TCPUDPDaytime Protocol1. Official. 14. Reserved. Reserved. Unassigned. Official. 15. TCPUDPPreviously netstat service11. Gateway/gw-5492app.jpg' alt='Bacnet Server Simulator' title='Bacnet Server Simulator' />Unofficial. Reserved. Reserved. Unassigned. Official. TCPUDPQuote of the Day QOTD1. Official. 18. TCPUDPMessage Send Protocol1. Official. 19. TCPUDPCharacter Generator Protocol CHARGEN1. Official. 20. Assigned. File Transfer Protocol FTP data transfer7Official. Assigned. File Transfer Protocol FTP control command781. Official. 22. UDPSecure Shell SSH,7 secure logins, file transfers scp, sftp and port forwarding. Official. 23. TCPAssigned. Telnet protocolunencrypted text communications72. Official. 25. TCPAssigned. Simple Mail Transfer Protocol SMTP,72. Official. 26. Reserved. Reserved. Unassigned. Official. 37. TCPUDPTime Protocol2. Official. 38. TCPUDPRoute Access Protocol RAP2. Official. 39. TCPUDPResource Location Protocol RLP2. Official. 40. Reserved. Reserved. Unassigned. Official. 42. TCPUDPHost Name Server Protocol2. Official. 43. TCPUDPWHOIS protocol2. Official. 49. TCPUDPTACACS Login Host protocol2. Official. 50. TCPUDPRemote Mail Checking Protocol3. Official. 51. Reserved. Official. 51. TCPUDPPreviously Interface Message Processor logical address managementcitation neededUnofficial. TCPUDPXerox Network Systems XNS Time ProtocolimportanceOfficial. TCPUDPDomain Name System DNS7Official. TCPUDPXerox Network Systems XNS clearinghouseimportanceOfficial. TCPUDPXerox Network Systems XNS authenticationimportanceOfficial. TCPUDPAny private terminal accessfurther explanation neededOfficial. TCPUDPXerox Network Systems XNS MailimportanceOfficial. Artist System By Lukas Rossi. Assigned. UDPBootstrap Protocol BOOTP server 7 also used by Dynamic Host Configuration Protocol DHCPOfficial. Assigned. UDPBootstrap Protocol BOOTP client 7 also used by Dynamic Host Configuration Protocol DHCPOfficial. Assigned. UDPTrivial File Transfer Protocol TFTP73. Official. 70. TCPUDPGopher protocol3. Official. 717. 4TCPUDPNETRJS protocol3. Official. 75. TCPUDPAny private dial out servicefurther explanation neededOfficial. TCPUDPAny private Remote job entryfurther explanation neededOfficial. TCPAssigned. Finger protocol73. Official. 80. UDP4. Hypertext Transfer Protocol HTTP74. Official. 80. UDPQUIC from Chromium for HTTPcitation neededUnofficial. NANAUnassigned. Official. TCPTor. Parkonion routingverification neededUnofficial. UDPTor. Park controlverification neededUnofficial. Any private terminal linkfurther explanation neededOfficial. TCPAssigned. Kerberos74. Official. 90. TCPUDPdnsix Do. D Network Security for Information Exchange Securit sic Attribute Token MapimportanceOfficial. TCPUDPPoint. Cast dotcom1third party source neededUnofficial. TCPWIP message protocolverification neededUnofficial. NANAUnassigned with known unauthorized usefurther explanation needed1Official. TCPUDPNIChost name. Official. 10. 2TCPUDPISO Transport Service Access Point TSAP Class 0 protocol 4. Official. 10. 4TCPUDPDigital Imaging and Communications in Medicine DICOM also port 1. Official. 10. 5TCPUDPCCSO Nameserver4. Official. 10. 7TCPUDPRemote User Telnet Service RTelnet4. Official. 10. 8TCPUDPIBM Systems Network Architecture SNA gateway access server. Official. 10. 9TCPUDPPost Office Protocol, version 2 POP25. Official. 11. 0TCPAssigned. Post Office Protocol, version 3 POP375. Official. 11. 1TCPUDPOpen Network Computing Remote Procedure Call ONC RPC, sometimes referred to as Sun RPCOfficial. TCPIdent, authentication serviceidentification protocol,75. IRC servers to identify users. Official. 11. 3TCPAssigned. Authentication Service auth, the predecessor to identification protocol. Used to determine a users identity of a particular TCP connection. Official. 11. 4NANAUnassigned deprecated since June 2. Official. 11. 5TCPUDPSimple File Transfer Protocol75. Official. 11. 7TCPUDPUUCP Mapping Project path servicecitation neededOfficial. TCPUDPStructured Query Language SQL ServicesJargonOfficial. TCPAssigned. Network News Transfer Protocol NNTP,7 retrieval of newsgroup messages5. Official. 12. 3Assigned. UDPNetwork Time Protocol NTP, used for time synchronization7Official. TCPUDPFormerly Unisys Unitary Login, renamed by Unisys to NXEdit. Used by Unisys Programmers Workbench for Clearpath MCP, an IDE for Unisys MCP software development. Official. 13. 5TCPUDPDCEendpoint resolution. Official. 13. 5TCPUDPMicrosoft EPMAP End Point Mapper, also known as DCERPC Locator service,5. DHCP server, DNS server and WINS. Also used by DCOMOfficial. Assigned. UDPNet. BIOS Name Service, used for name registration and resolution5. Official. 13. 8TCPUDPNet. BIOS Datagram Service75. Official. 13. 9TCPAssigned. Through The Fire Sebastian Telfair Download Movies there. Net. BIOS Session Service5. Official. 14. 3TCPAssigned. Making Modbus device communicate with a PCMaking Modbus device communicate with a PCI am learning more about MODBUS, and I would like to know how I make the Modbus device communicate with the PC. I am learning more about MODBUS, and I would like to know how I make the Modbus device communicate with the PC. Like for example, how do I gather outputsinputs from Modbus Do I need to do some programming Or do I need to make an interface board so that the Modbus device and the PC can communicate Anyone can help Please. No interface board needed. There are two separate thing to consider physical connection and Modbus software. First physical conntection. Modbus devices communicates via serial connections for Ethernet connections. If your Modbus device have Ethernet port, then connect both your PC and the device to the same network hub or switch using Cat. You can even use a crossover Cat 5 to connect your PC to the Modbus device. If your Modbus device have a RS2. This normally have a DB9 port. If the device is consider a Data Communication Equipment DCE then you can connect using a standard straight thru cable. If it is a DTE device, then use a null modem cable. A null modem cable is used to connect two DTE devices. Your PC is always a DTE device. If the device is have a serial RJ4. DB9 RJ4. 5 converter or a RJ4. RJ4. 5 serial pinouts varies from manufacturer to manufacturer, so you will need to consult the manufacturer for the pinout. There is also pinout database on the web athttp rj. As for software, there are many PC based softwares out there that can be used to talk to a Modbus device. You can Google http www. Some of the vendors will give you a 3. Hope this helps. Email me with specifics and I can help more. Tom. Tran Industran. Thanks. really appreciate it. Depends on type of Modbus. Modbus TCP generally Ethernet over TCPIP. Modbus RTU generally serial port, but can be embedded in Ethernet. Modbus ASCII generally serial port, but can be embedded in Ethernet or wireless. Modbus Plus Requires expansion card or module. Visit http automatedsolutions. Modbus driver solutions for Windows PCs. Fully functioning 3. Ready to run example applications will have you communicating within minutes. Kepwares Modbus driver Suite in it Enhnanced OPC Server Kepserver. Ex will get you connected to almost all the Modbus enabled devices out there. OPC, DDE, Fast. DDESuite. Link, and NIO PDB for client connectivity. Http www. kepware. Fred Loveless. Support Manager. Kepware Technologies. I have very good experiences with Mod. Sim. 32 and Mod. Scan. You can find them on the web and it is definately possible for free, if you want it to be. Mod. Sim. 32 used for simulate registers of a slave over either Mod. Bus TCP or RS4. 85. Mod. Scan. 32 is used as the opposite master as it polls the registers from a Mod. Bus slave. Completely priceless software for commissioning and testing engineers. Simple and stupid and always works the way it should be DCheers. I am a newbie to Modscan. Since you are an experienced user, request help. Modscan. 32 Script Sample, especially one which includes multiple register read with response verification of register content. It would help me as reference to write my own scripts. Thanks in advance. Deepak Bhoopatkar. Hii am new to the modbus communication. Basically what my application is that we are taking field data through modbus scanner in ifix. Right now i dont have the scanner hardware and i want to send some data through simulation. I have downloaded both modscan. If anybody can help me out. I found simply modbus much easier to use than modscan. It should get you better results. You can write your own software to read Modbus points, its pretty simple. All you have to do is read the API. The people above have already told you how to connect your Modbus device to your computer. When it comes time to test your device, I suggest that you use a tool like Modbus Scannerhttp www. Hello there,To connect your modbus device to a PC and retrieve data from it, you need an OPC server. I have used this on a regular basis big and small projects and its reliable. Let me know how it went. Thanks,Wassim Daoud. Global Solutions Architect. Statistica 8 Software more. Matrikon. OPCAs others have said it depends very much on the type of Modbus. If you have programming experience and are looking for the cheapest solution, there is a free Java driver for Modbus called jamod. I have successfully implemented about 1. PC controlmonitoring system for Modbus devices. It works either on TCPIP and serial RS2. RTU and ASCII. If you are interested, I wrote a blog article about it here www. Blogarticle. TypeArticle. Viewarticle. Id7. Remote Machine Monitoring. Connecting to a Modbus Network with Java and Jamod. Feel free to contact me if you decide to go this route. Jon Carson. DMC Inc. Expert Software Engineering Serviceshttp www. Blogarticle. TypeArticle. Viewarticle. Id7. Remote Machine Monitoring. Connecting to a Modbus Network with Java and Jamod. I am very much interested in getting my Square D Power. Logic Circuit Monitors that use Modbus to talk directly to my PC. But I could not get your link below to work. Could you advisecorrect the link Thank you. Rob. Robert J. Honders CEHonderosa Valley Consulting Renewables Research. Studio Building I1. Kennel Rd. Cuddebackville NY 1. Honders at HVC. RR. COMRobert at Honders. Phone 8. 45 7. 54 7. If you are using ModbusTCP, I have a Python driver. See http sourceforge. There are three packages. The MBLogic package is a complete soft logic platform. The MBTools package has a number of stand alone programs for web based HMI, a ModbusTCP server, a GUI based program for reading and writing arbitrary ModbusTCP addresses for testing and troubleshooting and a few other things as well. The MBLibs package provides the ModbusTCP client protocol as a library, together with a demo and documentation on how to use it to write your own programs. I find your solution easily applicable. In my case the requirement is to gather data from devices that support MODBUS RTU protocol and display it on a PC or display. The device has both RS 4. RS 2. 32 ports for serial communication. I need a software for acquiring data into PC and would like to know how to display this data. In future I want to extend this feature to issue commands from pc to the devices using a HMI. Any suggestion shall be highly appreciated. ICC has recently released a free Modbus master program works with Modbus serial and TCP. Its different from programs like Modscan etc. XML profile of the registers that exist on a device. You can then uploaddownloadcompare parameter sets i. CSV file, which can then easily be manipulatedgraphed via Excel, etc. It runs on the. NET platform in Windows. The Port. 40 Automation Management Server will provide you WS Management web services, JSON, and XML interfaces for not only Modbus, but BACnet, OPC, and a number of other industrial standards as well. Visit Port. 40. com for details. On www. modbus. pl there are some examples for Perl and VB. Your subscription request is being.