Foxboro™ DCS FBM232 Field Device System Integrator Module, 10/ 100 Mbps Ethernet, Single PSS 41H-2S232

　　Key features of the FBM232 are:

　　• 10 Mbps or 100 Mbps Ethernet network transmission rate to/from field device

　　• Communicates with up to 64 field devices

　　• I/O software driver is downloadable from a library of available protocols

　　• Up to 2000 DCI block connections

　　• Integrates field device data into a Foxboro DCS control database using Ethernet connectivity

　　• Field mounted

　　• Class G3 (harsh) environments.

　　I/O Drivers

　　This fieldbus module (FBM) is a generic Ethernet hardware module in which different software drivers can be loaded. These drivers configure the FBM to recognize a particular protocol used by the device. Several of the software drivers are standard product offerings. Other custom drivers can be developed to meet specific needs.

　　These drivers are dynamically downloaded to the FBM232 with software code specifically designed to interface with the third party device’s protocol. The configuration procedures and the software requirements for each driver are unique to the device(s) being integrated into the system.

　　Ethernet Link Setup

　　Data communication between the FBM232 and field devices are through the RJ-45 connector located on the front of the FBM232 module. The RJ-45 connector of the FBM232 can be connected through hubs, or through Ethernet switches to the field devices (refer to Ethernet Switches for Use with FBM232, page 12). Connection of multiple devices to the FBM232 requires a hub or switch.

　　Configurator

　　The FDSI configurator sets up the FBM232 XML based port and device configuration files. The port configurator allows for easy setup of the communication parameters for each port (such as, Dynamic Host Configuration Protocol (DHCP), IP addresses). The device configurator is not needed for all devices, but when needed it configures device specific and point specific considerations (such as, scan rate, address of the data to be transferred, and the amount of data to be transferred in one transaction)

　　Operations

　　The FBM232 can access up to 64 devices to read or write data. From the Foxboro DCS control station to which the FBM232 is connected, up to 2000 Distributed Control Interface (DCI) data connections can be made to read or write data. Supported data types are determined by the particular driver loaded on the FBM232, which converts the data to the DCI data types listed below:

　　• An analog input or output value (integer or IEEE single-precision floating point)

　　• A single digital input or output value

　　• Multiple (packed) digital input or output values (packed in groups of up to 32 digital points per connection).

　　Thus the FBM232 can access up to 2000 analog I/O values, or up to 64000 digital I/O values, or a combination of digital and analog values up to the maximum capacity a user allows within the sizing guidelines of the control processor. The frequency of access to the FBM232 data by a control station can be as fast as 500 ms. The performance depends on each device type and the layout of data in the device.

　　The FBM232 collects the required data from the devices, performs the necessary conversions, and then stores the converted data in its database for incorporation into the Foxboro DCS plant management functions and operator displays. Data may also be written out to the individual devices from the Foxboro DCS system.

　　Fieldbus Communications

　　The Fieldbus Communications Module (FCM100Et or FCM100E) or the Field Control Processor (FCP270 or FCP280) interface the redundant 2 Mbps module Fieldbus used by the FBMs. The FBM232 accepts communication from either path of the redundant 2 Mbps module Fieldbus - should one path fail or be switched at the system level, the module continues communication over the active path.

　　Standard, Rugged Design

　　The FBM232 has a rugged extruded aluminum exterior for physical and electrical protection of the circuits. Enclosures, specially designed for mounting the FBMs, provide various levels of environmental protection, up to Class G3 harsh environments per ISA Standard S71.04.

　　Modular Baseplate Mounting

　　The module mounts on a Modular Baseplate, which accommodates up to four or eight FBMs. The Modular Baseplate is either DIN rail mounted or rack mounted. The Modular Baseplate includes signal connectors for the FBMs, provides connections for independent dc power supplies, I/O cable connections, and 2 Mbps Module Fieldbus connections.

　　Easy Removal/Replacement

　　The module can be removed or replaced without removing power.

　　Visual Indicators

　　Light-emitting diodes (LEDs) incorporated into the front of the module provide visual indication of the module’s operational status, and the communication activity (transmit/receive) of the Ethernet port.

　　Ethernet Switches for Use with FBM232 DIN Rail Mounted 5-Port 10/100 Base TX Switch

　　The 5-port 10/100 base TX Ethernet switch (P0972WE) is Din rail mounted and available for use with the FBM232. You can connect up to four Ethernet devices using this 5-port switch. Additionally, multiple switches can be interconnected to connect up to 64 devices to a single FBM232.

FBM232 P0926GW.pdf

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