Application for Web-IO: Message Queue Telemetry Transport
MQTT: Industry 4.0 you can touch
Terminal devices in the Internet of Things generally have no public IP address, but rather are connected over private networks. Cross-network connections can be opened only in the outgoing direction without a lot of additional effort. This eliminates peer-to-peer connections as a communication channel for the Internet of Things.
The solution is provided by the protocol MQTT: Terminal devices open a connection to a publically accessible messaging service, the broker. Here they can as publishers publish information and as subscribers subscribe to it.
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.
Web-IO with MQTT
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.
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
- HTTP (Web interface and REST)
- Motivation: MQTT, what is it and how does it work?
- Resources: Documentation, software and online services for MQTT
- Technical data sheet: eb-IO 4.0 2x Digital Input, 2x Digital Output
- Application example: Tunnel I/Os via CloudMQTT
- Overview: More application possibilities for the Web-IO Digital
Order a sample - try it out yourself!
Offer for commercial customers: You can order the Web-IO Digital as a sample. If the sample is returned within 30 days, you pay only the return shipping costs. To keep the test unit, simply pay the accompanying invoice.
Full support: During the testing phase and of course beyond our engineers will be happy to assist you with any questions.