Converter OPC UA Server / MQTT - HD67B42-B2
Converter OPC UA Server / MQTT - HD67B42-B2
The ADFweb HD67B42-B2 connects an OPC UA Client application to an MQTT broker. It exposes variables through an OPC UA Server and maps their values to MQTT publish/subscribe topics. More
Code: HD67B42-B2
The ADFweb HD67B42-B2 connects an OPC UA Client application to an MQTT broker. It exposes variables through an OPC UA Server and maps their values to MQTT publish/subscribe topics. More
Code: HD67B42-B2
ADFweb HD67B42-B2
OPC UA Server / MQTT
The ADFweb HD67B42-B2 connects an OPC UA Client application to an MQTT broker. It exposes variables through an OPC UA Server and maps their values to MQTT publish/subscribe topics.
We will check your selection and prepare a quotation
Send us the device models, required connection and quantity.
Converter applications
Use it to exchange data between an OPC UA Client system and applications connected to a shared MQTT broker. Up to 1,500 bytes are available for reading and 1,500 bytes for writing; variable and topic mapping defines the meaning of the values.
Technical specifications HD67B42-B2
| Order code | HD67B42-B2 |
|---|---|
| Protocol connection | OPC UA Server / MQTT |
| Converter roles | OPC UA Server; MQTT Client with publish/subscribe topics |
| Interfaces and ports | Ethernet RJ45 |
| Data capacity | 1500 bytes in each direction |
| Power supply | Confirm against the label and hardware version before ordering |
| Consumption at 24 V DC | 4 W |
| Operating temperature | -40 °C to +85 °C |
| Mounting | 35 mm DIN rail |
| Dimensions of the version shown (D × W × H) | 60 × 35 × 95 mm |
| Device weight | approximately 200 g |
| Configuration software | SW67B42 |
We will confirm the supply range for this model against the specific hardware version. Always check the device label before connecting the power supply.
Communication and configuration
In SW67B42, configure the OPC UA Server, MQTT broker address and port, credentials and topics. Define OPC UA variables and publish/subscribe topic mapping, including data types and message structure.
MQTT communication requires an external broker. Connect the B2 version over Ethernet; do not infer wireless support from this order code. Check the required OPC UA and MQTT security against the specific firmware and peer system.
Supply and accessories
Please provide the complete order code. If you need a power supply, connection cables or help with configuration, include them in your enquiry. We will confirm the scope of supply and required accessories for your installation in the quotation.
Documentation and software
Diagrams and hardware version

The images help identify the hardware version. When replacing an older unit, compare its label, connectors and dimensions; we will confirm the version to be supplied in the quotation.
Frequently asked questions
Is knowing the two protocols enough?
The device roles, physical interfaces and data to be transferred must also be checked. MQTT communication requires an external broker. Connect the B2 version over Ethernet; do not infer wireless support from this order code. Check the required OPC UA and MQTT security against the specific firmware and peer system.
How is this converter configured?
In SW67B42, configure the OPC UA Server, MQTT broker address and port, credentials and topics. Define OPC UA variables and publish/subscribe topic mapping, including data types and message structure.
What information should I send to check the selection?
Send the exact device models at both ends, the protocols and communication roles, the number of devices and the required values. For a PLC, include the firmware and method of accessing its data.
FOXON support with selection and ordering
Selection based on your devices
We will review the specific connection, communication roles and required data.
Availability check
Before you place an order, we will confirm current availability and the possible delivery date.
Documentation for the exact order code
We select the documentation and configuration tool using the complete order code.
Accessories for your installation
We will include the requested accessories in the quotation to suit the connection arrangement.
Choosing the correct version
Two devices with the same protocols can have different functions. Check the gateway role on each side, the connectors and the complete order code.
MQTT communication requires an external broker. Connect the B2 version over Ethernet; do not infer wireless support from this order code. Check the required OPC UA and MQTT security against the specific firmware and peer system.
Converter enquiry HD67B42-B2
Provide the order code, quantity and the devices you need to connect. We will check the suitable version and prepare a quotation.
Request the converterTechnical specifications HD67B42-B2
| Order code | HD67B42-B2 |
|---|---|
| Protocol connection | OPC UA Server / MQTT |
| Converter roles | OPC UA Server; MQTT Client with publish/subscribe topics |
| Interfaces and ports | Ethernet RJ45 |
| Data capacity | 1500 bytes in each direction |
| Power supply | Confirm against the label and hardware version before ordering |
| Consumption at 24 V DC | 4 W |
| Operating temperature | -40 °C to +85 °C |
| Mounting | 35 mm DIN rail |
| Dimensions of the version shown (D × W × H) | 60 × 35 × 95 mm |
| Device weight | approximately 200 g |
| Configuration software | SW67B42 |
We will confirm the supply range for this model against the specific hardware version. Always check the device label before connecting the power supply.