go-ethernetip
EtherNet/IP and CIP client, scanner and adapter: Class 1 and Class 3 connections, multicast, Rockwell Logix tags, EDS files and code generation, TLS. No dependencies.
go get github.com/otfabric/go-ethernetip← Standards and alliancesIndustry alliance · Industrial · Global
ODVA
ODVA, founded in 1995 as the Open DeviceNet Vendors Association, maintains the Common Industrial Protocol and its network adaptations EtherNet/IP, DeviceNet, ControlNet and CompoNet. It sells the specifications by subscription, assigns vendor IDs to licensed vendors, issues a Declaration of Conformity after conformance testing at its test service providers, and runs PlugFest interoperability events.
- Cheapest way in
- Fees not published
- Standards
- EtherNet/IP
- Verified
- 26 Oct 2026
OT Fabric is not affiliated with ODVA. This profile is independent and based on the organization's own published pages, linked next to each fact. ODVA is the authority on its terms and fees.
What ODVA does
- PublishesThe CIP Networks Library: CIP, EtherNet/IP, CIP Security and the other volumes
- CertifiesConformance testing and the Declaration of Conformity
- TestsPlugFest interoperability testing
Taking part
Each question is separate, because "open" and "free" mean different things here. A yes always means open or free to someone who is not a member.
- Can anyone read the specifications for free?
- NoThe specifications are sold as annual subscriptions, updated twice a year, and need signed Terms of Usage first. Prices are on the order form only. odva.org
- Can anyone take part in the community?
- PartlyPlugFest events are open without membership; Special Interest Groups are listed as a member benefit. odva.org
- Can an individual take part for free?
- Not applicableMembership is limited to Licensed Vendors of ODVA technologies, which are companies. odva.org
- Can an organization join for free?
- Not publishedMembership levels and fees are not published on the pages we checked; the order form only lists member discounts.
- Are technical working groups open to non-members?
- UnknownJoining Special Interest Groups is listed as a member benefit; we found no statement on access for non-members.
- Can non-members take part in interoperability testing?
- YesThe PlugFest page states that ODVA membership is not required. odva.org
- Can a non-member certify a product?
- PartlyConformance testing needs no membership, but the vendor must be a Licensed Vendor, with signed Terms of Usage, a vendor ID, a specification subscription and a conformance test software subscription. odva.org
- Does it maintain or host open-source implementations?
- UnknownThe developer hub offers ODVACompress source code after registration; we found no open-source protocol stack maintained by ODVA. OpENer is maintained by the independent EIP Stack Group.
Membership tiers and published fees
Published examples as listed on the organization's pages on 26 Oct 2026. Where a page does not say whether a fee recurs, we do not guess.
| Tier | Published fee | Who can join | Votes | Working groups | Source |
|---|---|---|---|---|---|
| Licensed Vendor | Not published | A company that signs the ODVA Application and Agreement for Membership and Terms of Usage, the technology licence; needed before buying specifications or a vendor ID.Pays the non-member price for specifications, vendor IDs and test software. | Unknown | Unknown | odva.org |
| Associate member | Not published | Licensed Vendors that can show intent to make and sell products using ODVA technologies.25% discount on specifications, vendor IDs and conformance test software. | Unknown | Unknown | odva.org |
| Regular or Principal member | Not published | Licensed Vendors.50% discount on specifications, vendor IDs and conformance test software. | Unknown | Unknown | odva.org |
Certification and interoperability
- Conformance testing · open to non-membersODVA conformance testingEvery product with ODVA technology must pass vendor-independent conformance testing, which results in a Declaration of Conformity. Test service providers: ODVA in Ann Arbor (USA), TÜV Rheinland in Yokohama (Japan) and Taicang (China), and Otto-von-Guericke-Universität Magdeburg (Germany). Fees are not published. odva.org
- Test tool · open to non-membersODVA conformance test softwareA subscription that vendors must buy before conformance test services; members get 25% or 50% off. odva.org
- Plugfest · open to non-membersEtherNet/IP PlugFestA three-day event where vendors exercise their products against other vendors' in a live system, using ODVA's interoperability test procedures (Pub 95). odva.org
What stands out
Building EtherNet/IP into a product is a licensing relationship before it is a membership question: Terms of Usage, a vendor ID, a specification subscription and a conformance test are needed whether or not a company joins.
Open-source implementers work without the specifications. OpENer was first released by Rockwell Automation, and newer stacks such as go-ethernetip are built from public documents and the behaviour of other implementations. That keeps the code open, but leaves conformance to the companies that ship products on it.
The PlugFest is the cheapest way in for a young company: it needs no membership and tests a product against other vendors' devices in a live system, well before the formal conformance test.
ODVA does not publish its fees on its website, so comparing the cost of entry with the OPC Foundation or the DNP Users Group needs a quote.
Related organizations
Related OT Fabric projects
Independent open-source work on the same protocols. Listing them here does not mean they are certified by or associated with ODVA.
ethernetipctl
Discover and identify EtherNet/IP devices, read and write attributes, stream I/O, diagnose, read and write Logix tags, check EDS files, or simulate an adapter.
ethernetip-interop
Twelve EtherNet/IP reference stacks in eight languages, from OpENer and libplctag to pycomm3, gologix, eip-rs and EEIP.NET, as targets and originators, with Class 1 I/O, Class 3 and Logix fixtures.
Sources
- Getting started: specifications, vendor ID and Terms of Usage odva.org
- Conformance testing odva.org
- Test service provider locations odva.org
- PlugFest odva.org
- Membership application odva.org
- Membership benefits odva.org
- Specification, vendor ID and test software order form odva.org
- Developer hub odva.org
- Request the Application and Agreement for Membership and Terms of Usage governance document
- The Common Industrial Protocol and the Family of CIP Networks (PUB00123) governance document
- Recommended Functionality for EtherNet/IP Devices (PUB00070) governance document
- EtherNet/IP Interoperability Test Procedures (PUB00095) governance document
Verified on 26 Oct 2026; due for a re-check by 24 Apr 2027 (180 days). Found something out of date? Report a correction or edit the data on GitHub.