Modbus Protocol Source Code Library

Modbus enables communication among many devices connected to the same network, for example, a system that measures temperature and humidity and communicates the results to a computer.
Modbus is often used to connect a supervisory computer with a remote terminal unit (RTU) in supervisory control and data acquisition (SCADA) systems. Many of the data types are named from its use in driving relays: a single-bit physical output is called a coil, and a single-bit physical input is called a discrete input or a contact.

- quote from Wikipedia page on Modbus

Salient Features

Fully compliant with ANSI C
Transparent licensing scheme - No hidden costs, No deferred payments.
High performance, robust and scalable architecture
Provides a simple method for systems integrators and OEMs to utilize standard tools to implement their systems
For Linux Platform, Protocol Stack written using only POSIX-compliant system calls and libraries.
Context-based event-driven model

Licensing

Source Code License model:

In this License model, We deliver complete source code of the protocol implementation according to the customer specified operating system(Windows, Linux, QNX...).
Customer may embed the library into unlimited copies of Multiple end-use products for worldwide manufacturing, branding and distribution. Original equipment manufacturers choose this model. They usually have multiple products in their pipeline.

Compiled Library License model:

In this License model, We deliver Dynamic/ Static compiled library (dll / lib) of the protocol implementation according to the customer specified operating system(Windows, Linux, QNX...).
Customer may embed the library into unlimited copies of Multiple end-use products for worldwide manufacturing, branding and distribution. Original equipment manufacturers choose this model. They usually have multiple products in their pipeline.

You can also try our Modbus Windows SDK and Modbus Linux SDK

For more details, Contact Us : Contact

Customer Quotes

Edward Li

It has been a pleasure to work with FreyrSCADA. Pricing is competitive, and most importantly,the service and delivery have allowed us to meet our design demands.Integration was seamless.
B.Tech Inc

Thanks for your professional works. It's has been very use full to us. We saved a lot of hours by using your libraries.
Active Sensors

I did not run into any issues. The port went well.To poll data from competitor's instruments and converting the data to be used by our battery management software.

Knowledge Base

Video Tutorial:

Get a free Modbus Development Bundle

New updated Version of Modbus SDK (Software Development Kit) is available now.
FreyrSCADA Modbus Development Bundle
In the Development Bundle, We included Windows & Linux SDK.