{"product_id":"beckhoff-ip2301-b520-fieldbus-box-4-channel-digital-input-output-module","title":"Beckhoff IP2301-B520 Fieldbus Box 4-Channel Digital Input\/Output Module","description":"\u003ch3\u003eDescription\u003c\/h3\u003e\n\u003cp style=\"color: #2d3748; margin-bottom: 1rem;\"\u003eDesigned for direct on-machine deployment without protective enclosures, the \u003cstrong\u003eBeckhoff IP2301-B520\u003c\/strong\u003e Fieldbus Box offers high-performance decentralized digital I\/O handling on standard \u003cstrong\u003eDeviceNet\u003c\/strong\u003e networks. By combining four 24 V DC digital inputs with a 3 ms filter and four 0.5 A digital outputs in a single IP67-rated housing, this compact module allows engineers to place field connections closer to automation sensors and actuators. This close-proximity installation strategy significantly cuts down on routing paths, decreases cabling complexity, and simplifies maintenance in harsh washdown or high-vibration environments.\u003c\/p\u003e\n\n\u003ch3\u003eFeatures\u003c\/h3\u003e\n\u003cul style=\"list-style-type: square; color: #2d3748; padding-left: 20px; margin-bottom: 1.5rem;\"\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDeviceNet Connectivity:\u003c\/strong\u003e Integrated 5-pin M12 bus interface offering automatic baud rate detection up to 500 kbaud.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eIntegrated Digital I\/O:\u003c\/strong\u003e Provides 4 digital inputs (24 V DC, Type 2) and 4 digital outputs (24 V DC, 0.5 A per channel) for space-efficient field distribution.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eRugged Polyamide Housing:\u003c\/strong\u003e Manufactured from PA6 polyamide, providing physical impact resistance, vibration damping, and an IP65\/66\/67 environmental protection rating.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOutput Safety:\u003c\/strong\u003e All 4 output channels are individually short-circuit proof with a typical short-circuit current limit of 1.5 A.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFlexible Power Architecture:\u003c\/strong\u003e Separate power loops for control voltage (sensor\/logic) and load voltage (actuator\/output) allow independent safety-shutdown profiling.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eApplications\u003c\/h3\u003e\n\u003cul style=\"list-style-type: square; color: #2d3748; padding-left: 20px; margin-bottom: 1.5rem;\"\u003e\n  \u003cli\u003eDecentralized assembly automation and robotic end-of-arm tooling.\u003c\/li\u003e\n  \u003cli\u003eConveyor systems, packaging machinery, and material handling lines.\u003c\/li\u003e\n  \u003cli\u003eFood processing machinery requiring high-pressure washdown IP67 ratings.\u003c\/li\u003e\n  \u003cli\u003eAutomotive manufacturing environments featuring distributed DeviceNet architectures.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\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; border: 1px solid #e2e8f0;\"\u003e\n    \u003cthead\u003e\n      \u003ctr style=\"border-bottom: 2px solid #e2e8f0;\"\u003e\n        \u003cth style=\"padding: 10px; text-align: left; font-weight: bold; border-right: 1px solid #e2e8f0;\"\u003eSpecification Parameter\u003c\/th\u003e\n        \u003cth style=\"padding: 10px; text-align: left; font-weight: bold;\"\u003eValue \/ Rating\u003c\/th\u003e\n      \u003c\/tr\u003e\n    \u003c\/thead\u003e\n    \u003ctbody\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 10px; font-weight: bold; border-right: 1px solid #e2e8f0;\"\u003eManufacturer\u003c\/td\u003e\n        \u003ctd style=\"padding: 10px;\"\u003eBeckhoff\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 10px; font-weight: bold; border-right: 1px solid #e2e8f0;\"\u003eModel \/ Article Number\u003c\/td\u003e\n        \u003ctd style=\"padding: 10px;\"\u003eIP2301-B520\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 10px; font-weight: bold; border-right: 1px solid #e2e8f0;\"\u003eProtocol \/ Fieldbus System\u003c\/td\u003e\n        \u003ctd style=\"padding: 10px;\"\u003eDeviceNet (IPxxxx-B52x series)\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 10px; font-weight: bold; border-right: 1px solid #e2e8f0;\"\u003eData Transfer Rates\u003c\/td\u003e\n        \u003ctd style=\"padding: 10px;\"\u003eAuto-detection: 125 kBaud, 250 kBaud, 500 kBaud\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 10px; font-weight: bold; border-right: 1px solid #e2e8f0;\"\u003eNumber of Channels\u003c\/td\u003e\n        \u003ctd style=\"padding: 10px;\"\u003e4 Digital Inputs + 4 Digital Outputs\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 10px; font-weight: bold; border-right: 1px solid #e2e8f0;\"\u003eInput Signal Voltage\u003c\/td\u003e\n        \u003ctd style=\"padding: 10px;\"\u003e\"0\" signal: -3 to +5 V | \"1\" signal: 11 to 30 V (6 mA input current, EN 61131-2 Type 2)\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 10px; font-weight: bold; border-right: 1px solid #e2e8f0;\"\u003eInput Filter Time\u003c\/td\u003e\n        \u003ctd style=\"padding: 10px;\"\u003e3.0 ms\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 10px; font-weight: bold; border-right: 1px solid #e2e8f0;\"\u003eOutput Voltage Rating\u003c\/td\u003e\n        \u003ctd style=\"padding: 10px;\"\u003e24 V DC (-15% \/ +20%)\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 10px; font-weight: bold; border-right: 1px solid #e2e8f0;\"\u003eMax. Output Current\u003c\/td\u003e\n        \u003ctd style=\"padding: 10px;\"\u003e0.5 A per channel (individually short-circuit proof)\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 10px; font-weight: bold; border-right: 1px solid #e2e8f0;\"\u003eControl \/ Fieldbus Isolation\u003c\/td\u003e\n        \u003ctd style=\"padding: 10px;\"\u003e500 V RMS\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 10px; font-weight: bold; border-right: 1px solid #e2e8f0;\"\u003eI\/O Connections\u003c\/td\u003e\n        \u003ctd style=\"padding: 10px;\"\u003eM8, screw-type connection\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 10px; font-weight: bold; border-right: 1px solid #e2e8f0;\"\u003eBus Interface\u003c\/td\u003e\n        \u003ctd style=\"padding: 10px;\"\u003e1 x M12 plug, 5-pin\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 10px; font-weight: bold; border-right: 1px solid #e2e8f0;\"\u003ePower Supply Feed\u003c\/td\u003e\n        \u003ctd style=\"padding: 10px;\"\u003eFeed: 1 x M8 male, 4-pin | Downstream: 1 x M8 female, 4-pin\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 10px; font-weight: bold; border-right: 1px solid #e2e8f0;\"\u003eOperating \/ Storage Temp.\u003c\/td\u003e\n        \u003ctd style=\"padding: 10px;\"\u003e0 to +55 degC \/ -25 to +85 degC\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 10px; font-weight: bold; border-right: 1px solid #e2e8f0;\"\u003eIP Protection Rating\u003c\/td\u003e\n        \u003ctd style=\"padding: 10px;\"\u003eIP65 \/ IP66 \/ IP67 (conforms to EN 60529)\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 10px; font-weight: bold; border-right: 1px solid #e2e8f0;\"\u003eHousing Dimensions (W x H x D)\u003c\/td\u003e\n        \u003ctd style=\"padding: 10px;\"\u003e30 mm x 175 mm x 26.5 mm\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 10px; font-weight: bold; border-right: 1px solid #e2e8f0;\"\u003eHousing Material \/ Weight\u003c\/td\u003e\n        \u003ctd style=\"padding: 10px;\"\u003ePolyamide PA6 \/ Shipping weight: 2 kg\u003c\/td\u003e\n      \u003c\/tr\u003e\n    \u003c\/tbody\u003e\n  \u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003ch3\u003eConnections and Interfaces\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; border: 1px solid #e2e8f0;\"\u003e\n    \u003cthead\u003e\n      \u003ctr style=\"border-bottom: 2px solid #e2e8f0;\"\u003e\n        \u003cth style=\"padding: 10px; text-align: left; font-weight: bold; border-right: 1px solid #e2e8f0;\"\u003eConnector Type\u003c\/th\u003e\n        \u003cth style=\"padding: 10px; text-align: left; font-weight: bold; border-right: 1px solid #e2e8f0;\"\u003ePin Number\u003c\/th\u003e\n        \u003cth style=\"padding: 10px; text-align: left; font-weight: bold;\"\u003eSignal Assignment\u003c\/th\u003e\n      \u003c\/tr\u003e\n    \u003c\/thead\u003e\n    \u003ctbody\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd rowspan=\"5\" style=\"padding: 10px; font-weight: bold; border-right: 1px solid #e2e8f0; vertical-align: top;\"\u003eDeviceNet M12 (5-pin Male)\u003c\/td\u003e\n        \u003ctd style=\"padding: 10px; border-right: 1px solid #e2e8f0;\"\u003ePin 1\u003c\/td\u003e\n        \u003ctd style=\"padding: 10px;\"\u003eShield \/ Functional Earth\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 10px; border-right: 1px solid #e2e8f0;\"\u003ePin 2\u003c\/td\u003e\n        \u003ctd style=\"padding: 10px;\"\u003eV+ (DeviceNet Transceiver Supply 24 V DC)\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 10px; border-right: 1px solid #e2e8f0;\"\u003ePin 3\u003c\/td\u003e\n        \u003ctd style=\"padding: 10px;\"\u003eV- (DeviceNet Transceiver Common Ground)\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 10px; border-right: 1px solid #e2e8f0;\"\u003ePin 4\u003c\/td\u003e\n        \u003ctd style=\"padding: 10px;\"\u003eCAN_H (DeviceNet High Line)\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 10px; border-right: 1px solid #e2e8f0;\"\u003ePin 5\u003c\/td\u003e\n        \u003ctd style=\"padding: 10px;\"\u003eCAN_L (DeviceNet Low Line)\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd rowspan=\"4\" style=\"padding: 10px; font-weight: bold; border-right: 1px solid #e2e8f0; vertical-align: top;\"\u003ePower Feed M8 (4-pin Male)\u003c\/td\u003e\n        \u003ctd style=\"padding: 10px; border-right: 1px solid #e2e8f0;\"\u003ePin 1\u003c\/td\u003e\n        \u003ctd style=\"padding: 10px;\"\u003eFeed US (Control Logic \/ Sensor Supply, 24 V DC)\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 10px; border-right: 1px solid #e2e8f0;\"\u003ePin 2\u003c\/td\u003e\n        \u003ctd style=\"padding: 10px;\"\u003eFeed UP (Load \/ Output Actuator Supply, 24 V DC)\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 10px; border-right: 1px solid #e2e8f0;\"\u003ePin 3\u003c\/td\u003e\n        \u003ctd style=\"padding: 10px;\"\u003eGND S (Control \/ Sensor Ground)\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 10px; border-right: 1px solid #e2e8f0;\"\u003ePin 4\u003c\/td\u003e\n        \u003ctd style=\"padding: 10px;\"\u003eGND P (Load Ground)\u003c\/td\u003e\n      \u003c\/tr\u003e\n    \u003c\/tbody\u003e\n  \u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003ch3\u003eEmpirical Engineering Insights\u003c\/h3\u003e\n\u003ch4\u003eAlternative Models \u0026amp; Compatibility\u003c\/h4\u003e\n\u003cp style=\"color: #2d3748; margin-bottom: 1rem;\"\u003eThe IP2301-B520 belongs to Beckhoff's classic Fieldbus Box series. If upgrading legacy networks or replacing older revisions, note that firmware version dependencies are critical when attempting direct drop-in swaps on older DeviceNet scanners. Configuration parameters are stored on-module and can be parameter-set via explicit DeviceNet messaging or by utilizing Beckhoff's proprietary \u003cstrong\u003eKS2000\u003c\/strong\u003e configuration software connected through an RS232 adapter.\u003c\/p\u003e\n\n\u003ch4\u003eApplication Pitfalls \u0026amp; Engineering Notes\u003c\/h4\u003e\n\u003cp style=\"color: #2d3748; margin-bottom: 1rem;\"\u003eWhen cascading auxiliary power (US and UP) through multiple Fieldbus Boxes via the M8 daisy-chain downstream connector, ensure that the cumulative system current does not exceed the absolute 4 A rating of the M8 contact pins. Overloading these pins leads to severe thermal stress inside the polyamide housing, risking permanent seal degradation and communication loss.\u003c\/p\u003e\n\n\u003ch4\u003eCommissioning \u0026amp; Wiring Tips\u003c\/h4\u003e\n\u003cp style=\"color: #2d3748; margin-bottom: 1rem;\"\u003eAlways ensure that a standard 121 Ohm terminal resistor is physically situated at the direct endpoints of the DeviceNet trunk line. When completing IP67 assemblies, verify that unused M8 and M12 sockets are sealed with official Beckhoff dust caps (part numbers ZS3000-0010\/0020) to prevent moisture ingress. To secure connections without cracking the PA6 threads, torque M8 connections to 0.4 Nm and M12 connections to 0.6 Nm using an industrial torque driver.\u003c\/p\u003e\n\n\u003ch3\u003eInstallation Guidelines\u003c\/h3\u003e\n\u003cdiv style=\"background-color: #fff5f5; border-left: 4px solid #c53030; padding: 1rem; margin-bottom: 1.5rem; border-radius: 4px;\"\u003e\n  \u003cstrong style=\"color: #9b2c2c; display: block; margin-bottom: 0.5rem;\"\u003eCRITICAL WARNING: ELECTRICAL HAZARD\u003c\/strong\u003e\n  \u003cp style=\"color: #9b2c2c; margin: 0;\"\u003eBefore initiating any hardware mounting, wiring, or pin-configuration procedures, ensure that all main, auxiliary, and network bus power sources have been fully disconnected. High-transient bus signals or accidental shorting of the 24 V DC supply during hot-plugging can permanently damage the DeviceNet transceiver circuitry.\u003c\/p\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; min-width: 24px; height: 24px; border-radius: 50%; display: flex; align-items: center; justify-content: center; font-weight: bold; margin-right: 12px; font-size: 14px;\"\u003e1\u003c\/div\u003e\n  \u003cp style=\"margin: 0; color: #2d3748;\"\u003eMount the Fieldbus Box using the two 3.5 mm diameter fixing holes on a flat machine base. Use M3 screws tightened to a maximum torque of 0.8 Nm.\u003c\/p\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; min-width: 24px; height: 24px; border-radius: 50%; display: flex; align-items: center; justify-content: center; font-weight: bold; margin-right: 12px; font-size: 14px;\"\u003e2\u003c\/div\u003e\n  \u003cp style=\"margin: 0; color: #2d3748;\"\u003eConnect the DeviceNet cable to the M12 5-pin plug, ensuring the network shielding line is securely connected to functional earth.\u003c\/p\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; min-width: 24px; height: 24px; border-radius: 50%; display: flex; align-items: center; justify-content: center; font-weight: bold; margin-right: 12px; font-size: 14px;\"\u003e3\u003c\/div\u003e\n  \u003cp style=\"margin: 0; color: #2d3748;\"\u003eInterface the M8 4-pin feed cable to configure separate control logic (US) and actuator\/load power (UP) lines.\u003c\/p\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; min-width: 24px; height: 24px; border-radius: 50%; display: flex; align-items: center; justify-content: center; font-weight: bold; margin-right: 12px; font-size: 14px;\"\u003e4\u003c\/div\u003e\n  \u003cp style=\"margin: 0; color: #2d3748;\"\u003eConnect sensors and digital actuator components to the M8 terminal channels, checking that individual loads do not exceed the 0.5 A limit.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv style=\"display: flex; align-items: flex-start;\"\u003e\n  \u003cdiv style=\"background-color: #2b6cb0; color: #ffffff; min-width: 24px; height: 24px; border-radius: 50%; display: flex; align-items: center; justify-content: center; font-weight: bold; margin-right: 12px; font-size: 14px;\"\u003e5\u003c\/div\u003e\n  \u003cp style=\"margin: 0; color: #2d3748;\"\u003eTurn on the 24 V DC power, launch the KS2000 utility or your primary DeviceNet master software, and configure node-addressing mapping.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BECKHOFF","offers":[{"title":"Default Title","offer_id":53106468061547,"sku":"IP2301-B520","price":100.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0953\/3227\/0443\/files\/ip2301-b520-jm3ank5joai.png?v=1776244996","url":"https:\/\/www.plcprotech.com\/products\/beckhoff-ip2301-b520-fieldbus-box-4-channel-digital-input-output-module","provider":"PLC ProTech Ltd.","version":"1.0","type":"link"}