gpio.net: our Ready-to-use Modbus - I/O Net

A uniform communication interface and an extensive choice of analog, relay and digital modules alongside with PWM, frequency counters and filtered pulse counters – that is gpio.net. Easily connect your sensors and actuators and access them via Modbus and worldwide via IP or GSM.

All I/O modules an be integrated into an existing or new Modbus net, scalable up to 253 units. They can be powered externally or via RS485 or USB. The gpio.ipcore or the gpio.GSM module allow to program automated tasks and are the interface to IP-based and mobile networks.



Each module features RS232, RS485 and a standard USB serial port, allowing quick connection to any computing device like a PC for data access, configuration and maintenance. Thus each module can act as USB-gateway to the RS485 Modbus net. The gpio.net modules can be read and written and configured by register like commands.

Industry standard casing systems are available for almost all use cases, turning gpio.net into a complete system solution. Be it IP65 for measurements in the field or for switchboards, for one module or highly stackables for hundred of gpio.net modbus cards, budget or rugged - we are as flexible as the requirements of your application. Let us help you to find your ideal casing system!

Our long-term availability policy and commitment to direct support form the perfect base for successful embedded computing solutions. We offer adaptions to our series products to meet individual requirements – be large or small scale.



Test it!

What if you would need just a few lines of Javascript code to embed a gpio.net card on your website? What, if the same lines of code make up your mobile webapp? Have a look here at the preview of our Node.js demo with code samples for IoT today!



Different Housing Solutions

Aluminium casing for I/O modules


With carry handle for mobile use, as 19" casing, for IP65 protection or very compact in eloxed aluminium boxes: most diverse options drive the point home for the flexible gpio.net concept.