W&T connects
Interfaces for TCP/IP, Ethernet, RS-232, RS-485, USB, 20mA, glass and plastic fiber optic cable, http, SNMP, OPC, Modbus TCP, I/O digital, I/O analog, ISA, PCI

Application for the Web-IO Digital:

Configuring the Web-IO Digital for MQTT Box-to-Box

MQTT basic settings for Box-to-Box

  • To change the configuration of the Web-IO you first need to obtain the necessary access rights by entering the administrator password.

    Box to Box Master
  • Then in the menu tree select Communication channels >> MQTT.

  • Now in the configuration window enter all the parameters relevant to the selected MQTT broker.

    Web-IO MQTT configuration

    The minimal configuration includes the Broker-IP and broker name, the broker port as well as the interval for monitoring the connection Whether Username, password and Client-ID are required depends on the broker settings.

  • By enabling Use encrypted TLS connection you are specifying whether data should be exchanged with the broker TLS in encrypted format.

Configure and enable outputs for switching via MQTT Subscribe

  • Now in the lower section of the configuration window enable Publish and Subscribe with W&T standard topics.

    Web-IO Box-to-Box

  • Check the box for Switch outputs using subscribe and enable the desired outputs for switching.

  • The outputs can now be switched using the description of the topics [Devicename]/set/output/[No.] by a corresponding Publish on the other Web-IO.