PROMODBUS LICENSE

Version 1.5.1, February 1st, 2023

Copyright (C) Stéphane Raimbault <stephane.raimbault@webstack.fr>

Only licensees are permitted to copy verbatim copies of this license document, but changing it is not allowed.

Preamble

Promodbus is a commercial spin-off of the libmodbus project.

The purpose of this edition is to enable professionals to market their products using the Modbus library without the constraints of the LGPL, and to fund the development of the Open Source version called libmodbus.

The license keys correspond to purchases that Stéphane Raimbault or Webstack company can verify through their own application, and then authorize or revoke the license. There is no automatic check of the validity of the licence by the Promodbus runtime. The license keys are just used for administrative tasks such as to facilitate the license renewal. Promodbus is designed to run on secured environment and will never make queries to external licence control services.

The libmodbus code is owned by Stéphane Raimbault and contributions are only accepted under the conditions of the Contributor License Agreement.

Terms and conditions

The licensee must be a company or an organization.

"Copyright" also means copyright-like laws that apply to other kinds of works, such as semiconductor masks.

"Derived work" means to copy form or adapt all or part of the work in a fashion requiring copyright permission, other than the making of an exact copy. The resulting work is called a "modified version" of the earlier work or a work "based on" the earlier work.

"The Program" refers to any copyrightable work licensed under this License. Each licensee is addressed as "you".

✓ Permitted

  • Copy/modify the source code
  • Redistribution in binary forms
  • Use in licensee company products
  • Software escrow arrangements

✗ Not Allowed

  • Redistribute source code
  • Redistribute derived source code
  • Use author's name for endorsement
  • General source code distribution

The licensee is allowed to put one copy of the source code of promodbus into a single pre arranged Vaultinum Software Escrow account by virtue of subcontract held with their client, and will be available to that client in the event the licensee is unable or unwilling to provide support or services to modify that source. In this case promodbus is distributed to the client under the same conditions as the licensee.

The license is only applicable and valid once the licensee has paid the full amount to Stéphane Raimbault or the Webstack company.

License Details

Unless otherwise agreed, the licence is:

License Type

  • Per-seat One license for each promodbus developer
  • Lifetime No strings attached, no Internet checks
  • Distribution One license for unlimited binary products

Support & Updates

First Year Includes:

  • • Free updates (major and minor)
  • • Privileged GitHub support
  • • Direct repository access

Extended Support:

  • • Two years of minor updates
  • • Unlimited binary products
  • • Renewal: €250 VAT excluded
The licensee can provide their GitHub username to get access to the promodbus GitHub repository.

Disclaimer of Warranty and Liability

THIS SOFTWARE IS PROVIDED BY THE AUTHOR "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.