Rosemount 3420 Fieldbus Interface Module
The Rosemount 3420 Fieldbus Interface Module provides a connection between Foundation Fieldbus field devices and any host system with Modbus® RTU serial interface or OPC. Now any plant with a Modbus capable host system can take advantage of Foundation Fieldbus technology including high density temperature instruments and advanced diagnostic capabilities.
- Connect up to 4 Foundation Fieldbus H1 segments
- NEMA 4X / IP65 enclosure suitable for mounting in any general purpose location
- Supports MODBUS RTU with floating point data on a RS485 serial connection
- Ethernet port for web based configuration of the 3420 and all connected field devices
- Supports OPC and MODBUS TCPIP on an Ethernet connection.
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The Rosemount 3420 Fieldbus Interface Module provides the benefits of advanced Rosemount fieldbus products, even if you do not have a fieldbus system:
- Enables advanced features and benefits of fieldbus products to be used by legacy DCS and other controllers.
- Reduced Wiring for Installation savings
- Web access to data
- Uses open standards ensuring long term support and product evolution

| Device Interface: FOUNDATION™ Fieldbus |
Interfaces up to 4 fieldbus H1 segments to connect up to 64 field devices |
| Host System Interface |
Communicates to any host system with Modbus protocol. All standard measurement, status, or other parameter can be read by any Modbus host system. Modbus configuration via easy to use web interface. |
| 3420 Configuration |
Accomplished via any PC with standard web browser and Ethernet interface. No special software required. |
| Field Mounted Housing |
Suitable for mounting in any Zone 2 / Division 2 or general purpose area | |
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