MQTT is scalable and supports thousands of possible terminal devices. It works reliably, even in networks with low bandwidth or when there are occasional connection interruptions. Since its standardization in 2013 MQTT has taken on increasing importance as a communication protocol for the Internet of Things.

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Web-IO 4.0 Digital

W&T Web-IOs are equipped with digital in- and outputs which you can access over the network. Effective action management and numerous network services enable flexible use in a variety of application scenarios.

Possible applications

  • Monitoring digital outputs

When the state of a digital input changes, the Web-IO responds with freely configurable actions. This can include sending emails, SNMP traps or MQTT messages.

  • Utility meters in the network

Each digital input is linked to a counter which counts incoming pulses. This allows for example utililtymeters equipped with an S0 interface to be easily incorporated into the network.

  • Network remote switch

Various network protocols offer access to the digital outputs. This allows them to switch connected peripherals – or building services and production equipment using coupling relays.

Other supported protocols and M2M interfaces

  • TCP and UDP sockets, client and server
  • SNMP including traps
  • SMTP e-mail sending
  • OPC server
  • Modbus/TCP
  • HTTP (Web interface and REST)

More information

Detailed knowledge

Still have questions about the Web-IO Digital or MQTT?We is ready to help you with any questions.
Phone: +45 40736058 (Mon.-Fri. 8 a.m. to 5 p.m.)
E-mail: info@com-server.net

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Wiesemann & Theis GmbH was founded in 1979 by Reinhard Wiesemann and Rüdiger Theis. With 50 employees, the company produces microcomputer and network technology at its Wuppertal location. In 2001, Wiesemann & Theis introduced the first industrial temperature sensor with a network interface, the Web-Thermometer, and has almost 20 years of experience in the areas of Industry 4.0 and the Internet of Things.

Active Communication has been a distributor for W&T since 1992 for Denmark and since 2002 also for Sweden, Norway, Iceland. W & T’s products are extremely user-friendly and reliable at a competitive price.