{"product_id":"beckhoff-ip2021-b730-fieldbus-box-8-channel-digital-output-module","title":"Beckhoff IP2021-B730 Fieldbus Box 8-channel Digital Output Module","description":"\u003ch3\u003eDescription\u003c\/h3\u003e\n\u003cp style=\"color: #2d3748; margin-bottom: 1rem;\"\u003eDesigned for decentralized industrial automation, the \u003cstrong\u003eBeckhoff IP2021-B730\u003c\/strong\u003e is a rugged fieldbus module that interfaces eight digital outputs directly within hostile environments via the Modbus RTU\/ASCII protocol. This unit eliminates the need for protective control cabinets by integrating an IP67-rated polyamide enclosure, making it ideal for distributed mounting directly onto machinery and processing systems. With \u003cstrong\u003eM8 screw-type connections\u003c\/strong\u003e for outputs and a robust M12 RS485 communication interface, it ensures high signal integrity and rapid integration into existing Modbus networks.\u003c\/p\u003e\n\n\u003ch3 style=\"color: #1a365d; margin-top: 1.5rem; margin-bottom: 0.75rem; font-weight: 600;\"\u003eFeatures\u003c\/h3\u003e\n\u003cul style=\"padding-left: 1.5rem; margin-bottom: 1rem; color: #2d3748; list-style-type: square;\"\u003e\n  \u003cli\u003eEight independent 24 V DC digital outputs rated for up to 2 A per channel.\u003c\/li\u003e\n  \u003cli\u003eEach output channel is individually short-circuit proof to protect field wiring and connected loads.\u003c\/li\u003e\n  \u003cli\u003eDirect Modbus RTU\/ASCII protocol communication over RS485 physical layer.\u003c\/li\u003e\n  \u003cli\u003eAddress configuration selectable via onboard rotary switches or KS2000 software interface.\u003c\/li\u003e\n  \u003cli\u003eIP65, IP66, and IP67 protection class rating for reliable performance in washdown and wet industrial areas.\u003c\/li\u003e\n  \u003cli\u003eDiagnostic LEDs for localized troubleshooting of channel status, bus activity, and logic power.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3 style=\"color: #1a365d; margin-top: 1.5rem; margin-bottom: 0.75rem; font-weight: 600;\"\u003eApplications\u003c\/h3\u003e\n\u003cul style=\"padding-left: 1.5rem; margin-bottom: 1rem; color: #2d3748; list-style-type: square;\"\u003e\n  \u003cli\u003eDecentralized control architectures in packaging and material handling lines.\u003c\/li\u003e\n  \u003cli\u003eDirect machine actuation of solenoid valves, contactors, and small DC motors.\u003c\/li\u003e\n  \u003cli\u003eWet process areas, including food processing and wastewater treatment plants.\u003c\/li\u003e\n  \u003cli\u003eConveyor system routing and automated sorting mechanisms.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3 style=\"color: #1a365d; margin-top: 1.5rem; margin-bottom: 0.75rem; font-weight: 600;\"\u003eTechnical Specifications\u003c\/h3\u003e\n\u003cdiv style=\"overflow-x: auto; width: 100%; margin-bottom: 1.5rem;\"\u003e\n  \u003ctable style=\"border-collapse: collapse; width: 100%; color: #2d3748;\"\u003e\n    \u003cthead\u003e\n      \u003ctr\u003e\n        \u003cth style=\"border-bottom: 2px solid #cbd5e0; padding: 0.75rem; text-align: left; font-weight: 600; color: #1a365d;\"\u003eParameter\u003c\/th\u003e\n        \u003cth style=\"border-bottom: 2px solid #cbd5e0; padding: 0.75rem; text-align: left; font-weight: 600; color: #1a365d;\"\u003eValue\u003c\/th\u003e\n      \u003c\/tr\u003e\n    \u003c\/thead\u003e\n    \u003ctbody\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"border-bottom: 1px solid #e2e8f0; padding: 0.75rem;\"\u003eManufacturer\u003c\/td\u003e\n        \u003ctd style=\"border-bottom: 1px solid #e2e8f0; padding: 0.75rem; font-weight: bold;\"\u003eBeckhoff\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"border-bottom: 1px solid #e2e8f0; padding: 0.75rem;\"\u003eModel Number\u003c\/td\u003e\n        \u003ctd style=\"border-bottom: 1px solid #e2e8f0; padding: 0.75rem; font-weight: bold;\"\u003eIP2021-B730\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"border-bottom: 1px solid #e2e8f0; padding: 0.75rem;\"\u003eProduct Type\u003c\/td\u003e\n        \u003ctd style=\"border-bottom: 1px solid #e2e8f0; padding: 0.75rem;\"\u003eFieldbus Box\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"border-bottom: 1px solid #e2e8f0; padding: 0.75rem;\"\u003eNumber of Outputs\u003c\/td\u003e\n        \u003ctd style=\"border-bottom: 1px solid #e2e8f0; padding: 0.75rem;\"\u003e8\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"border-bottom: 1px solid #e2e8f0; padding: 0.75rem;\"\u003eOutput Connections\u003c\/td\u003e\n        \u003ctd style=\"border-bottom: 1px solid #e2e8f0; padding: 0.75rem;\"\u003eM8, screw type\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"border-bottom: 1px solid #e2e8f0; padding: 0.75rem;\"\u003eNominal Output Voltage\u003c\/td\u003e\n        \u003ctd style=\"border-bottom: 1px solid #e2e8f0; padding: 0.75rem;\"\u003e24 V DC (-15 % \/ +20 %)\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"border-bottom: 1px solid #e2e8f0; padding: 0.75rem;\"\u003eMax. Output Current\u003c\/td\u003e\n        \u003ctd style=\"border-bottom: 1px solid #e2e8f0; padding: 0.75rem;\"\u003e2 A per channel (individual short-circuit proof, total sum max 4 A)\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"border-bottom: 1px solid #e2e8f0; padding: 0.75rem;\"\u003eProtocol\u003c\/td\u003e\n        \u003ctd style=\"border-bottom: 1px solid #e2e8f0; padding: 0.75rem;\"\u003eModbus RTU \/ Modbus ASCII\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"border-bottom: 1px solid #e2e8f0; padding: 0.75rem;\"\u003eBus Interface\u003c\/td\u003e\n        \u003ctd style=\"border-bottom: 1px solid #e2e8f0; padding: 0.75rem;\"\u003e1 x M12 socket, 5-pin, B-coded\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"border-bottom: 1px solid #e2e8f0; padding: 0.75rem;\"\u003eData Transfer Rates\u003c\/td\u003e\n        \u003ctd style=\"border-bottom: 1px solid #e2e8f0; padding: 0.75rem;\"\u003e150, 300, 600, 1200, 2400, 4800, 9600, 19200, 38400 baud\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"border-bottom: 1px solid #e2e8f0; padding: 0.75rem;\"\u003ePower Supply Connection\u003c\/td\u003e\n        \u003ctd style=\"border-bottom: 1px solid #e2e8f0; padding: 0.75rem;\"\u003eFeed: 1 x M8 male socket (4-pin); Downstream: 1 x M8 female socket (4-pin)\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"border-bottom: 1px solid #e2e8f0; padding: 0.75rem;\"\u003eCurrent Consumption from Us\u003c\/td\u003e\n        \u003ctd style=\"border-bottom: 1px solid #e2e8f0; padding: 0.75rem;\"\u003e45 mA + sensor current (max. 0.5 A)\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"border-bottom: 1px solid #e2e8f0; padding: 0.75rem;\"\u003eProcess Image Bit Width\u003c\/td\u003e\n        \u003ctd style=\"border-bottom: 1px solid #e2e8f0; padding: 0.75rem;\"\u003e8 outputs\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"border-bottom: 1px solid #e2e8f0; padding: 0.75rem;\"\u003eOperating Temperature\u003c\/td\u003e\n        \u003ctd style=\"border-bottom: 1px solid #e2e8f0; padding: 0.75rem;\"\u003e0 to 55 degC\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"border-bottom: 1px solid #e2e8f0; padding: 0.75rem;\"\u003eStorage Temperature\u003c\/td\u003e\n        \u003ctd style=\"border-bottom: 1px solid #e2e8f0; padding: 0.75rem;\"\u003e-25 to 85 degC\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"border-bottom: 1px solid #e2e8f0; padding: 0.75rem;\"\u003eProtection Class\u003c\/td\u003e\n        \u003ctd style=\"border-bottom: 1px solid #e2e8f0; padding: 0.75rem;\"\u003eIP65 \/ IP66 \/ IP67 (conforms to EN 60529)\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"border-bottom: 1px solid #e2e8f0; padding: 0.75rem;\"\u003eHousing Material\u003c\/td\u003e\n        \u003ctd style=\"border-bottom: 1px solid #e2e8f0; padding: 0.75rem;\"\u003ePA6 (polyamide)\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"border-bottom: 1px solid #e2e8f0; padding: 0.75rem;\"\u003eDimensions (W x H x D)\u003c\/td\u003e\n        \u003ctd style=\"border-bottom: 1px solid #e2e8f0; padding: 0.75rem;\"\u003e30 mm x 175 mm x 26.5 mm\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"border-bottom: 1px solid #e2e8f0; padding: 0.75rem;\"\u003eWeight\u003c\/td\u003e\n        \u003ctd style=\"border-bottom: 1px solid #e2e8f0; padding: 0.75rem;\"\u003eapprox. 210 g\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"border-bottom: 1px solid #e2e8f0; padding: 0.75rem;\"\u003eShipping Weight (Calculated)\u003c\/td\u003e\n        \u003ctd style=\"border-bottom: 1px solid #e2e8f0; padding: 0.75rem;\"\u003e2.0 kg\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"border-bottom: 1px solid #e2e8f0; padding: 0.75rem;\"\u003eApprovals\u003c\/td\u003e\n        \u003ctd style=\"border-bottom: 1px solid #e2e8f0; padding: 0.75rem;\"\u003eCE, UL\u003c\/td\u003e\n      \u003c\/tr\u003e\n    \u003c\/tbody\u003e\n  \u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003ch3 style=\"color: #1a365d; margin-top: 1.5rem; margin-bottom: 0.75rem; font-weight: 600;\"\u003eEmpirical Engineering Insights\u003c\/h3\u003e\n\u003ch4 style=\"color: #2b6cb0; margin-top: 1rem; margin-bottom: 0.5rem; font-weight: 600;\"\u003eAlternative Models \u0026amp; Compatibility\u003c\/h4\u003e\n\u003cp style=\"color: #2d3748; margin-bottom: 1rem;\"\u003eThe IP2021-B730 operates as a standalone Modbus slave node and does not support IP-Link extension modules (denoted by the extension module parameter omission in OEM documentation). If downstream expansion is required, consider moving to the IL230x series coupling modules.\u003c\/p\u003e\n\n\u003ch4 style=\"color: #2b6cb0; margin-top: 1rem; margin-bottom: 0.5rem; font-weight: 600;\"\u003eApplication Pitfalls \u0026amp; Engineering Notes\u003c\/h4\u003e\n\u003cp style=\"color: #2d3748; margin-bottom: 1rem;\"\u003eWhile each channel is capable of switching a 2 A load, the cumulative current limit across all eight channels is capped at 4 A total due to the thermal dissipation limits of the compact, sealed polyamide housing. Driving multiple inductive or lamp loads near the 2 A peak simultaneously will cause thermal overload, triggering the internal electronic circuit protection.\u003c\/p\u003e\n\n\u003ch4 style=\"color: #2b6cb0; margin-top: 1rem; margin-bottom: 0.5rem; font-weight: 600;\"\u003eCommissioning \u0026amp; Wiring Tips\u003c\/h4\u003e\n\u003cp style=\"color: #2d3748; margin-bottom: 1rem;\"\u003eAny changes made to the rotary address selection switches will not register dynamically. A full system power cycle (disconnecting and reconnecting both the logic supply Us and auxiliary\/load supply Up) is mandatory for the hardware to initialize the new Modbus address.\u003c\/p\u003e\n\n\u003ch3 style=\"color: #1a365d; margin-top: 1.5rem; margin-bottom: 0.75rem; font-weight: 600;\"\u003eInstallation Guidelines\u003c\/h3\u003e\n\u003cdiv style=\"background-color: #fff5f5; border-left: 4px solid #c53030; padding: 1rem; margin-bottom: 1.5rem; color: #9b2c2c;\"\u003e\n  \u003cstrong\u003eCRITICAL WARNING:\u003c\/strong\u003e De-energize all primary, control, and auxiliary load power supplies before mounting, connecting, or servicing the module. Failure to fully isolate external 24 V DC pathways can cause permanent hardware damage, unexpected terminal shorting, or field hazard conditions during installation.\n\u003c\/div\u003e\n\n\u003cdiv style=\"display: flex; align-items: flex-start; margin-bottom: 1rem;\"\u003e\n  \u003cdiv style=\"background-color: #2b6cb0; color: #ffffff; border-radius: 50%; width: 24px; height: 24px; display: flex; align-items: center; justify-content: center; font-size: 12px; font-weight: bold; margin-right: 0.75rem; flex-shrink: 0;\"\u003e1\u003c\/div\u003e\n  \u003cdiv style=\"color: #2d3748;\"\u003eMount the Fieldbus Box using the two pre-molded 3.5 mm diameter fixing holes on a flat surface using M3 bolts, ensuring the module is not subject to structural twisting.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv style=\"display: flex; align-items: flex-start; margin-bottom: 1rem;\"\u003e\n  \u003cdiv style=\"background-color: #2b6cb0; color: #ffffff; border-radius: 50%; width: 24px; height: 24px; display: flex; align-items: center; justify-content: center; font-size: 12px; font-weight: bold; margin-right: 0.75rem; flex-shrink: 0;\"\u003e2\u003c\/div\u003e\n  \u003cdiv style=\"color: #2d3748;\"\u003eConfigure the Modbus station address on the rotary selection switches prior to cabling.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv style=\"display: flex; align-items: flex-start; margin-bottom: 1rem;\"\u003e\n  \u003cdiv style=\"background-color: #2b6cb0; color: #ffffff; border-radius: 50%; width: 24px; height: 24px; display: flex; align-items: center; justify-content: center; font-size: 12px; font-weight: bold; margin-right: 0.75rem; flex-shrink: 0;\"\u003e3\u003c\/div\u003e\n  \u003cdiv style=\"color: #2d3748;\"\u003eConnect the RS485 bus network line to the B-coded, 5-pin M12 socket, ensuring proper shield termination to eliminate communication noise.\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv style=\"display: flex; align-items: flex-start; margin-bottom: 1rem;\"\u003e\n  \u003cdiv style=\"background-color: #2b6cb0; color: #ffffff; border-radius: 50%; width: 24px; height: 24px; display: flex; align-items: center; justify-content: center; font-size: 12px; font-weight: bold; margin-right: 0.75rem; flex-shrink: 0;\"\u003e4\u003c\/div\u003e\n  \u003cdiv style=\"color: #2d3748;\"\u003ePlug in the M8 power cables for control voltage logic (Us) and output load voltage feed. Tighten all connectors to the recommended torque specifications to maintain the IP67 environmental seal.\u003c\/div\u003e\n\u003c\/div\u003e","brand":"BECKHOFF","offers":[{"title":"Default Title","offer_id":53106454954347,"sku":"IP2021-B730","price":100.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0953\/3227\/0443\/files\/ip2021-b730-5desjow00vk.png?v=1776244947","url":"https:\/\/www.plcprotech.com\/products\/beckhoff-ip2021-b730-fieldbus-box-8-channel-digital-output-module","provider":"PLC ProTech Ltd.","version":"1.0","type":"link"}