{"product_id":"fbm230-p0926gu-foxboro-i-a-series-modbus-interface-module","title":"FBM230 P0926GU Foxboro I\/A Series Modbus Interface Module","description":"\u003ch2\u003eFoxboro FBM230 P0926GU Four-Port Modbus Master Interface\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003eFoxboro FBM230 P0926GU\u003c\/strong\u003e, also cataloged as the \u003cstrong\u003eFBM230 P0926GU\u003c\/strong\u003e Modbus Master Interface Module, operates as a dedicated hardware component for multi-port serial and Ethernet data acquisition within Foxboro I\/A Series and Foxboro Evo DCS networks.\u003c\/p\u003e\n\u003ch3\u003eSuffix Breakdown \u0026amp; Model Matrix\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eFBM230\u003c\/strong\u003e: Functional series designation for the Fieldbus Module four-port Modbus Master architecture.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eP0926GU\u003c\/strong\u003e: Specific manufacturing part number defining the hardware revision and component layout.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eHardware Specifications\u003c\/h3\u003e\n\u003cfigure class=\"table\"\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003e\u003cstrong\u003eParameter\u003c\/strong\u003e\u003c\/th\u003e\n\u003cth\u003e\u003cstrong\u003eSpecification\u003c\/strong\u003e\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eModel\u003c\/td\u003e\n\u003ctd\u003eFBM230 P0926GU\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eFoxboro\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOrigin\u003c\/td\u003e\n\u003ctd\u003eUSA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e3.0 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003eStandard Foxboro FBM footprint\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temp\u003c\/td\u003e\n\u003ctd\u003e0 to +60 deg C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Consumption\u003c\/td\u003e\n\u003ctd\u003e12 W to 14 W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Input\u003c\/td\u003e\n\u003ctd\u003e24 VDC (redundancy supported)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePort Count\u003c\/td\u003e\n\u003ctd\u003e4 independent ports\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePhysical Interfaces\u003c\/td\u003e\n\u003ctd\u003eRS-232, RS-422, or RS-485 (configurable per port)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSupported Protocols\u003c\/td\u003e\n\u003ctd\u003eModbus RTU, Modbus ASCII, Modbus\/TCP\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eData Formats\u003c\/td\u003e\n\u003ctd\u003eBig Endian and Little Endian (software configurable)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIsolation\u003c\/td\u003e\n\u003ctd\u003e600 VAC galvanic isolation\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInternal Memory\u003c\/td\u003e\n\u003ctd\u003e16 MB SDRAM, 32 MB Flash\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003eChannel-to-Channel Isolation and Loop Protocol Processing\u003c\/h3\u003e\n\u003cp\u003eThe FBM230 P0926GU executes deterministic field communications by combining 600 VAC galvanic isolation barriers with software-configurable physical layers per port. Integrating direct galvanic separation between field terminals and backplane electronics mitigates common-mode ground loops and protects internal memory arrays from high-voltage field spikes. Furthermore, the onboard driver handles protocol parsing across standard RS-232, RS-422, RS-485 serial loops, and Modbus\/TCP Ethernet networks simultaneously, standardizing field variable register maps before delivering payload data to the control network.\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003eQ: How does the FBM230 module handle simultaneous protocol execution across different physical ports?\u003c\/p\u003e\n\u003cp\u003eA: Internal processing logic treats each of the four ports independently, executing dedicated driver routines for Modbus RTU, ASCII, or TCP without latency degradation on adjacent channels.\u003c\/p\u003e\n\u003cp\u003eQ: Can field engineers reconfigure port pinouts from RS-232 to RS-485 without physically modifying internal jumpers?\u003c\/p\u003e\n\u003cp\u003eA: Physical interface selection executes via software configuration within the Foxboro environment, matching the electrical characteristics of the targeted field loop without requiring hardware jumper changes.\u003c\/p\u003e\n\u003ch3\u003eField Installation Guidelines\u003c\/h3\u003e\n\u003cp\u003eMount the FBM230 directly into a compatible Foxboro FBM mounting baseplate, confirming that the backplane connector seats completely into the baseplate interface. Maintain proper strain relief on all field communications wiring and ensure that RS-485 shield drains terminate at a single designated cabinet earth ground to prevent current loop circulation. When wiring field-side connections, adhere strictly to terminal torque requirements using standard 5-thread engagement on NPT fittings where conduit transitions occur. Ensure the cabinet maintains adequate passive convection airflow so the module ambient environment does not exceed +60 deg C during operation.\u003c\/p\u003e","brand":"Foxboro","offers":[{"title":"Default Title","offer_id":43102949933146,"sku":"FBM230","price":99.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0710\/5957\/0778\/files\/300_68cb565d-c8a8-4939-9f4f-7a3c50d0c6fd.jpg?v=1774316322","url":"https:\/\/www.spareoil.com\/products\/fbm230-p0926gu-foxboro-i-a-series-modbus-interface-module","provider":"SpareOil Automation","version":"1.0","type":"link"}