Redundant FBM231 modules enable communication with dual-ported devices
Four software-configurable ports (each supports RS-232, RS-422, or RS-485)
Compliance with RS-232, RS-422, and RS-485 communication interface standards
Downloadable I/O software drivers from a library of available protocols
Support for up to 2000 DCI block connections
Capacity to communicate with:
Up to 64 RS-485 devices
Up to 4 directly connected RS-232 or RS-422 devices
Seamless integration of field device data into the Foxboro control database
Field-mountable design
Suitable for Class G3 (harsh) environments
A pair of FBM231 modules work together to provide redundancy at the Fieldbus Module (FBM) level, with field wiring connected to two termination assemblies. In this configuration:
One FBM231 operates as theMastermodule, and the other as theTrackermodule.
Input points on the control station are updated using device inputs received via the Master’s network connection.
Device output points (depending on the I/O driver) are written by both the Master and Tracker modules.
Role switching occurs automatically if the I/O driver detects issues (e.g., heartbeat loss), or users can manually switch roles at any time via SMDH.
The FBM231 is equipped withfour ports, each configurable individually in software for RS-232, RS-422, or RS-485. This flexibility allows a single FBM231 to connect to multiple similar but non-identical devices. Additionally:
Ports 1, 2, 3, and/or 4 can be configured as a single logical port with redundant cables, enabling interfacing with dual-ported I/O devices in the plant.
The FBM231 and its associated termination assemblies (TA) support multiple connection types:
Direct connections to dual-ported devices
Modem connections (when using the RS-232 interface)
Multidrop connections to RS-485 devices
Intrinsic safety devices (connected between the TA and field devices)
For single-ported devices, the FBM230 is recommended.
interface *Output method: rear output *Fast Ethernet: 3 slots, each slot supports 8 ports, with optional optical and electrical options *Gigabit Ethernet: Provides 4 1000Base SFP slots *CONSOLE port: RS232 (RJ45) *Alarm port: 5.08mm spacing 3-pin Phoenix wiring terminal, 250VAC/220VDC 2 A cable *Twisted pair cable: 100m *Multimode fiber: 1310nm, 2km (100Mbps); 1310nm, 500m (gigabit) *Single mode fiber: 1310nm, 0-40km; 1550nm, 0-80km source *Input voltage: 110-220VDC/VAC, redundant input *Connection terminal: 5.08mm spacing 5-pin Phoenix wiring terminal *Power:<40W mechanical properties *Case: Aluminum model with fanless design *Protection level: IP30 *Installation method: 19 inch 1U rack type *Shell size: 440 mm * 44.5 mm * 370 mm (W * H * D), as shown in the attached image *Impact, vibration, and drop: meet the requirements of IEC61850-3 5.5 CM level *Weight: approximately 4.3kg