{"product_id":"beckhoff-ip2321-b518-fieldbus-box-digital-i-o-module","title":"IP2321-B518 | Beckhoff | Boîte de bus de terrain","description":"\u003ch3\u003eDescription\u003c\/h3\u003e\n\u003cp style=\"color: #2d3748; margin-bottom: 1rem;\"\u003eOptimizing localized I\/O distribution in CANopen networks, the \u003cstrong\u003eBeckhoff IP2321-B518\u003c\/strong\u003e coordinates high-density automation points directly in the field. This rugged fieldbus module integrates digital inputs and outputs into a single, compact form factor designed for decentralized mounting without an electrical enclosure. Equipped with high-performance \u003cstrong\u003eCANopen\u003c\/strong\u003e communication capabilities, the module handles signal acquisition and actuator control in demanding environments while minimizing field cabling complexities via integrated loop-through network topologies.\u003c\/p\u003e\n\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul style=\"list-style-type: square; color: #2d3748; padding-left: 1.5rem; margin-bottom: 1.5rem;\"\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDistributed Architecture:\u003c\/strong\u003e Compact machine-mount design eliminates the need for terminal boxes or protective control panels.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHybrid I\/O Configuration:\u003c\/strong\u003e Equipped with 4 digital inputs (24 V DC with a 3 ms filter time) and 4 digital outputs (24 V DC with up to 2 A output capacity per channel).\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFieldbus Interface:\u003c\/strong\u003e Built-in CANopen transceiver supporting high-speed industrial bus networks.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eIntegrated T-Connector:\u003c\/strong\u003e Simplifies network wiring by allowing straight-line CANopen daisy-chaining without extra external splitters.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eM8 Connection Interface:\u003c\/strong\u003e Standardized industrial M8 screw connections ensure highly reliable, vibration-proof wiring terminations.\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: 1.5rem; margin-bottom: 1.5rem;\"\u003e\n  \u003cli\u003eAutomotive assembly line conveyor networks and sorting systems.\u003c\/li\u003e\n  \u003cli\u003eDecentralized packaging machinery operating in high-vibration environments.\u003c\/li\u003e\n  \u003cli\u003eMachine tool automation requiring local, high-current solenoid and sensor aggregation.\u003c\/li\u003e\n  \u003cli\u003eMaterial handling systems utilizing distributed CANopen control nodes.\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; text-align: left;\"\u003e\n    \u003cthead\u003e\n      \u003ctr style=\"border-bottom: 2px solid #2b6cb0;\"\u003e\n        \u003cth style=\"padding: 8px; font-weight: bold;\"\u003eSpecification Parameter\u003c\/th\u003e\n        \u003cth style=\"padding: 8px; font-weight: bold;\"\u003eTechnical Value\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: 8px; font-weight: bold;\"\u003eManufacturer\u003c\/td\u003e\n        \u003ctd style=\"padding: 8px;\"\u003eBeckhoff\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 8px; font-weight: bold;\"\u003eModel\u003c\/td\u003e\n        \u003ctd style=\"padding: 8px;\"\u003eIP2321-B518\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 8px; font-weight: bold;\"\u003eFieldbus Protocol\u003c\/td\u003e\n        \u003ctd style=\"padding: 8px;\"\u003eCANopen\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 8px; font-weight: bold;\"\u003eDigital Inputs\u003c\/td\u003e\n        \u003ctd style=\"padding: 8px;\"\u003e4 Channels (24 V DC)\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 8px; font-weight: bold;\"\u003eInput Filter Time\u003c\/td\u003e\n        \u003ctd style=\"padding: 8px;\"\u003e3 ms\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 8px; font-weight: bold;\"\u003eDigital Outputs\u003c\/td\u003e\n        \u003ctd style=\"padding: 8px;\"\u003e4 Channels (24 V DC)\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 8px; font-weight: bold;\"\u003eMax. Output Current\u003c\/td\u003e\n        \u003ctd style=\"padding: 8px;\"\u003e2 A per channel\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 8px; font-weight: bold;\"\u003eI\/O Connection\u003c\/td\u003e\n        \u003ctd style=\"padding: 8px;\"\u003eM8 Screw Connectors\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 8px; font-weight: bold;\"\u003eFieldbus Connection\u003c\/td\u003e\n        \u003ctd style=\"padding: 8px;\"\u003eM12 (with integrated T-connector)\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 8px; font-weight: bold;\"\u003eOperating Voltage\u003c\/td\u003e\n        \u003ctd style=\"padding: 8px;\"\u003e24 V DC\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 8px; font-weight: bold;\"\u003eShipping Weight (Calculated)\u003c\/td\u003e\n        \u003ctd style=\"padding: 2.0 kg;\"\u003e2.0 kg\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 IP2321-B518 is tailored for CANopen-based control networks. When transitioning legacy plants from CANopen to EtherCAT architectures, this module cannot be directly converted to EtherCAT. Systems integration engineers should look toward the Beckhoff EP2338-0002 EtherCAT Box as a high-density alternative, or utilize a local EtherCAT-to-CANopen coupler gateway to retain existing IP2321-B518 field runs without replacing field-level physical wiring.\u003c\/p\u003e\n\n\u003ch4\u003eApplication Pitfalls \u0026amp; Engineering Notes\u003c\/h4\u003e\n\u003cp style=\"color: #2d3748; margin-bottom: 1rem;\"\u003eWhile the module supports up to 2 A output current per channel, commissioning engineers must calculate the total aggregate load current for all active outputs. Exceeding the cumulative terminal current capabilities on the M8 auxiliary power feed can lead to localized thermal stress or unexpected low-voltage faults on the control side of the circuit, causing the module to shut down its outputs to protect internal solid-state components.\u003c\/p\u003e\n\n\u003ch4\u003eCommissioning \u0026amp; Wiring Tips\u003c\/h4\u003e\n\u003cp style=\"color: #2d3748; margin-bottom: 1rem;\"\u003eWhen deploying CANopen networks with the integrated T-connector, ensure that the network's physical ends are terminated with proper 120-Ohm resistors. To maintain the IP67 ingress protection rating, all unused M8 and M12 sockets must be sealed with Beckhoff protective caps and torqued to approximately 0.4 Nm. Over-tightening can crack the structural plastic threads, destroying the module's moisture-tight seal.\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;\"\u003e\n  \u003cp style=\"color: #9b2c2c; font-weight: bold; margin: 0 0 0.5rem 0;\"\u003eCRITICAL SAFETY WARNING\u003c\/p\u003e\n  \u003cp style=\"color: #9b2c2c; margin: 0; font-size: 0.95rem;\"\u003eEnsure all primary electrical systems, control voltages, and actuator auxiliary supplies are fully de-energized before mounting, wiring, or configuring the fieldbus module. Failure to isolate power lines can result in severe equipment damage, electrical shock, or unexpected mechanical movements of connected field machinery.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv style=\"display: flex; flex-direction: column; gap: 1rem; margin-bottom: 1.5rem;\"\u003e\n  \u003cdiv style=\"display: flex; align-items: flex-start; gap: 1rem;\"\u003e\n    \u003cdiv style=\"background-color: #2b6cb0; color: #ffffff; font-weight: bold; border-radius: 50%; min-width: 2rem; height: 2rem; display: flex; align-items: center; justify-content: center;\"\u003e1\u003c\/div\u003e\n    \u003cp style=\"color: #2d3748; margin: 0; padding-top: 0.2rem;\"\u003eSecurely mount the module directly to the machine frame using standard mounting holes, ensuring the mating surface is flat to prevent mechanical twisting when tightened.\u003c\/p\u003e\n  \u003c\/div\u003e\n  \u003cdiv style=\"display: flex; align-items: flex-start; gap: 1rem;\"\u003e\n    \u003cdiv style=\"background-color: #2b6cb0; color: #ffffff; font-weight: bold; border-radius: 50%; min-width: 2rem; height: 2rem; display: flex; align-items: center; justify-content: center;\"\u003e2\u003c\/div\u003e\n    \u003cp style=\"color: #2d3748; margin: 0; padding-top: 0.2rem;\"\u003eConfigure the CANopen node address using the protected rotary switches. Ensure node IDs do not overlap with other active fieldbus devices.\u003c\/p\u003e\n  \u003c\/div\u003e\n  \u003cdiv style=\"display: flex; align-items: flex-start; gap: 1rem;\"\u003e\n    \u003cdiv style=\"background-color: #2b6cb0; color: #ffffff; font-weight: bold; border-radius: 50%; min-width: 2rem; height: 2rem; display: flex; align-items: center; justify-content: center;\"\u003e3\u003c\/div\u003e\n    \u003cp style=\"color: #2d3748; margin: 0; padding-top: 0.2rem;\"\u003eConnect the M8 digital inputs and outputs, paying careful attention to the keyway orientation of the sensor and actuator cables.\u003c\/p\u003e\n  \u003c\/div\u003e\n  \u003cdiv style=\"display: flex; align-items: flex-start; gap: 1rem;\"\u003e\n    \u003cdiv style=\"background-color: #2b6cb0; color: #ffffff; font-weight: bold; border-radius: 50%; min-width: 2rem; height: 2rem; display: flex; align-items: center; justify-content: center;\"\u003e4\u003c\/div\u003e\n    \u003cp style=\"color: #2d3748; margin: 0; padding-top: 0.2rem;\"\u003eAttach the incoming and outgoing CANopen network links via the integrated T-connector. Verify that the bus line is properly terminated at the network physical boundaries.\u003c\/p\u003e\n  \u003c\/div\u003e\n  \u003cdiv style=\"display: flex; align-items: flex-start; gap: 1rem;\"\u003e\n    \u003cdiv style=\"background-color: #2b6cb0; color: #ffffff; font-weight: bold; border-radius: 50%; min-width: 2rem; height: 2rem; display: flex; align-items: center; justify-content: center;\"\u003e5\u003c\/div\u003e\n    \u003cp style=\"color: #2d3748; margin: 0; padding-top: 0.2rem;\"\u003eApply the 24 V DC system power supply and load supply lines, then run standard network diagnostic scans in your controller to verify node communication stability.\u003c\/p\u003e\n  \u003c\/div\u003e\n\u003c\/div\u003e","brand":"BECKHOFF","offers":[{"title":"Default Title","offer_id":53106466554219,"sku":"IP2321-B518","price":100.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0953\/3227\/0443\/files\/ip2321-b518-u2rj0gjtqx5.png?v=1776245043","url":"https:\/\/www.plcprotech.com\/fr\/products\/beckhoff-ip2321-b518-fieldbus-box-digital-i-o-module","provider":"PLC ProTech Ltd.","version":"1.0","type":"link"}