{"product_id":"beckhoff-fc3121-pci-express-profibus-master-slave-card","title":"FC3121 | BECKHOFF | Carte maître\/esclave PROFIBUS","description":"\u003ch3\u003eDescription\u003c\/h3\u003e\n\u003cp style=\"color: #2d3748; margin-bottom: 1rem;\"\u003eIntegrating industrial PC architectures with standard fieldbus networks, the \u003cstrong\u003eBeckhoff FC3121\u003c\/strong\u003e provides high-performance \u003cstrong\u003ePROFIBUS DP\u003c\/strong\u003e and \u003cstrong\u003eDP-V1\u003c\/strong\u003e communication via a single-channel \u003cstrong\u003ePCI Express x1\u003c\/strong\u003e interface. This interface card enables real-time, deterministic control link capabilities within \u003cstrong\u003eTwinCAT\u003c\/strong\u003e environments, acting as either a master or a slave. Engineered with a galvanic isolation barrier, it ensures high noise immunity and robust performance when interfacing with remote I\/O, variable speed drives, and complex industrial nodes in demanding electromagnetic 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\u003ePCI Express Interface:\u003c\/strong\u003e Utilizes a PCIe x1 slot for compatibility with modern industrial motherboards.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDual Protocol Operation:\u003c\/strong\u003e Supports both master and slave roles for versatile system architecture design.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eGalvanic Isolation:\u003c\/strong\u003e Optocoupled interface decoupling protects the PC host system against ground loops and transient spikes.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHigh-Speed Communication:\u003c\/strong\u003e Supports transmission rates up to 12 Mbaud with automatic baud rate detection.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOnboard Diagnostics:\u003c\/strong\u003e Features dual diagnostic LEDs per channel for rapid physical layer troubleshooting.\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\u003eHigh-speed PC-based control systems relying on the TwinCAT real-time kernel.\u003c\/li\u003e\n  \u003cli\u003eInterfacing multi-vendor PROFIBUS DP networks with centralized industrial PC units.\u003c\/li\u003e\n  \u003cli\u003eDistributed peripheral control, remote I\/O integration, and drive technology networking.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eTechnical Specifications Table\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 style=\"border-bottom: 2px solid #1a365d; text-align: left;\"\u003e\n        \u003cth style=\"padding: 10px; font-weight: bold;\"\u003eParameter\u003c\/th\u003e\n        \u003cth style=\"padding: 10px; font-weight: bold;\"\u003eValue \/ Specification\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;\"\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;\"\u003eModel\u003c\/td\u003e\n        \u003ctd style=\"padding: 10px;\"\u003eFC3121\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 10px; font-weight: bold;\"\u003ePC Interface\u003c\/td\u003e\n        \u003ctd style=\"padding: 10px;\"\u003ePCI Express (PCIe) x1\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 10px; font-weight: bold;\"\u003eFieldbus Protocol\u003c\/td\u003e\n        \u003ctd style=\"padding: 10px;\"\u003ePROFIBUS DP, PROFIBUS DP-V1\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 10px; font-weight: bold;\"\u003eNumber of Channels\u003c\/td\u003e\n        \u003ctd style=\"padding: 10px;\"\u003e1\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 10px; font-weight: bold;\"\u003eData Transfer Rates\u003c\/td\u003e\n        \u003ctd style=\"padding: 10px;\"\u003e9.6 kbaud to 12 Mbaud\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 10px; font-weight: bold;\"\u003eBus Interface\u003c\/td\u003e\n        \u003ctd style=\"padding: 10px;\"\u003e1 x D-sub socket, 9-pin, galvanically decoupled\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 10px; font-weight: bold;\"\u003eHardware Diagnostics\u003c\/td\u003e\n        \u003ctd style=\"padding: 10px;\"\u003e2 LEDs per channel\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 10px; font-weight: bold;\"\u003eProcess Image Bit Width\u003c\/td\u003e\n        \u003ctd style=\"padding: 10px;\"\u003eMax. 30.5 kbyte total input and output data\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 10px; font-weight: bold;\"\u003eOperating Temperature\u003c\/td\u003e\n        \u003ctd style=\"padding: 10px;\"\u003e0 to 55 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;\"\u003eDriver Compatibility\u003c\/td\u003e\n        \u003ctd style=\"padding: 10px;\"\u003eTwinCAT 2.11 R3 and higher \/ TwinCAT 3\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 10px; font-weight: bold;\"\u003eCountry of Origin\u003c\/td\u003e\n        \u003ctd style=\"padding: 10px;\"\u003eGermany\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 10px; font-weight: bold;\"\u003eShipping Weight (Calculated)\u003c\/td\u003e\n        \u003ctd style=\"padding: 10px;\"\u003e0.35 kg\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 10px; font-weight: bold;\"\u003ePackage Dimensions (Calculated)\u003c\/td\u003e\n        \u003ctd style=\"padding: 10px;\"\u003e180 mm x 150 mm x 40 mm\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;\"\u003e\n    \u003cthead\u003e\n      \u003ctr style=\"border-bottom: 2px solid #1a365d; text-align: left;\"\u003e\n        \u003cth style=\"padding: 10px; font-weight: bold;\"\u003eD-sub 9-Pin Assignment\u003c\/th\u003e\n        \u003cth style=\"padding: 10px; font-weight: bold;\"\u003eSignal \/ Function\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;\"\u003ePin 1\u003c\/td\u003e\n        \u003ctd style=\"padding: 10px;\"\u003eShield \/ Protective Earth (PE)\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 10px;\"\u003ePin 3\u003c\/td\u003e\n        \u003ctd style=\"padding: 10px;\"\u003eRxD\/TxD-P (Receive\/Transmit-Data-Plus, B-Line, Red)\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 10px;\"\u003ePin 5\u003c\/td\u003e\n        \u003ctd style=\"padding: 10px;\"\u003eDGND (Data Ground for active termination)\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 10px;\"\u003ePin 6\u003c\/td\u003e\n        \u003ctd style=\"padding: 10px;\"\u003eVP (Voltage-Plus, +5V for active termination)\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 10px;\"\u003ePin 8\u003c\/td\u003e\n        \u003ctd style=\"padding: 10px;\"\u003eRxD\/TxD-N (Receive\/Transmit-Data-Minus, A-Line, Green)\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 FC3121 is the direct PCI Express (PCIe) equivalent to the older FC3101 PCI-standard interface card. While the configuration and addressing procedures in TwinCAT System Manager remain identical, legacy motherboards without PCIe slots cannot accept the FC3121. Upgrading a system from standard PCI to PCIe requires reassigning the I\/O device link in the TwinCAT configuration workspace to map to the new hardware address.\u003c\/p\u003e\n\n\u003ch4\u003eApplication Pitfalls \u0026amp; Engineering Notes\u003c\/h4\u003e\n\u003cp style=\"color: #2d3748; margin-bottom: 1rem;\"\u003eWhen deploying the FC3121 at its maximum speed of 12 Mbaud, signal reflections can quickly cause bus timing faults and dropouts. Proper physical network termination must be powered and active at both physical ends of the segment. Keep in mind that Pin 6 (+5V) and Pin 5 (GND) are exclusively intended to power the bus terminating resistors inside standard D-sub connectors; drawing external power from these pins can overload the card's isolated transceiver circuit.\u003c\/p\u003e\n\n\u003ch4\u003eCommissioning \u0026amp; Wiring Tips\u003c\/h4\u003e\n\u003cp style=\"color: #2d3748; margin-bottom: 1rem;\"\u003eAlways ensure the driver association is set correctly during commissioning. If TwinCAT is unable to detect the PCIe card, check the Windows Device Manager to verify that the Beckhoff driver is correctly assigned to the physical slot and not blocked by native operating system PNP resource conflicts. Verify the shielding of the PROFIBUS cable is grounded at the entry point of the PC enclosure to prevent high-frequency common-mode noise from entering the internal card ground.\u003c\/p\u003e\n\n\u003ch3\u003eInstallation Guidelines\u003c\/h3\u003e\n\u003cdiv style=\"background-color: #fff5f5; border-left: 4px solid #c53030; padding: 15px; margin-bottom: 1.5rem;\"\u003e\n  \u003cp style=\"color: #9b2c2c; font-weight: bold; margin: 0 0 5px 0;\"\u003eCRITICAL WARNING\u003c\/p\u003e\n  \u003cp style=\"color: #9b2c2c; margin: 0;\"\u003eIsolate the industrial PC from the main AC\/DC power supply before removing the chassis cover. Static electricity can permanently damage the sensitive transceivers on the FC3121 card. Wear an ESD wrist strap bonded to the PC frame throughout the entire hardware installation process.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv style=\"display: flex; flex-direction: column; gap: 10px; margin-bottom: 1.5rem;\"\u003e\n  \u003cdiv style=\"display: flex; align-items: flex-start; gap: 15px;\"\u003e\n    \u003cdiv style=\"background-color: #2b6cb0; color: #ffffff; min-width: 28px; height: 28px; border-radius: 50%; display: flex; align-items: center; justify-content: center; font-weight: bold;\"\u003e1\u003c\/div\u003e\n    \u003cp style=\"color: #2d3748; margin: 3px 0 0 0;\"\u003eShut down the operating system, turn off the mains isolator, and remove the PC cover panels.\u003c\/p\u003e\n  \u003c\/div\u003e\n  \u003cdiv style=\"display: flex; align-items: flex-start; gap: 15px;\"\u003e\n    \u003cdiv style=\"background-color: #2b6cb0; color: #ffffff; min-width: 28px; height: 28px; border-radius: 50%; display: flex; align-items: center; justify-content: center; font-weight: bold;\"\u003e2\u003c\/div\u003e\n    \u003cp style=\"color: #2d3748; margin: 3px 0 0 0;\"\u003eSelect an available PCI Express x1 slot (x4, x8, or x16 physical slots can also be used if configured properly).\u003c\/p\u003e\n  \u003c\/div\u003e\n  \u003cdiv style=\"display: flex; align-items: flex-start; gap: 15px;\"\u003e\n    \u003cdiv style=\"background-color: #2b6cb0; color: #ffffff; min-width: 28px; height: 28px; border-radius: 50%; display: flex; align-items: center; justify-content: center; font-weight: bold;\"\u003e3\u003c\/div\u003e\n    \u003cp style=\"color: #2d3748; margin: 3px 0 0 0;\"\u003eAlign the card interface bracket with the rear slot opening and push the card firmly into the PCIe connector slot.\u003c\/p\u003e\n  \u003c\/div\u003e\n  \u003cdiv style=\"display: flex; align-items: flex-start; gap: 15px;\"\u003e\n    \u003cdiv style=\"background-color: #2b6cb0; color: #ffffff; min-width: 28px; height: 28px; border-radius: 50%; display: flex; align-items: center; justify-content: center; font-weight: bold;\"\u003e4\u003c\/div\u003e\n    \u003cp style=\"color: #2d3748; margin: 3px 0 0 0;\"\u003eSecure the metal faceplate of the card to the PC chassis using the mounting screw to maintain solid chassis ground.\u003c\/p\u003e\n  \u003c\/div\u003e\n  \u003cdiv style=\"display: flex; align-items: flex-start; gap: 15px;\"\u003e\n    \u003cdiv style=\"background-color: #2b6cb0; color: #ffffff; min-width: 28px; height: 28px; border-radius: 50%; display: flex; align-items: center; justify-content: center; font-weight: bold;\"\u003e5\u003c\/div\u003e\n    \u003cp style=\"color: #2d3748; margin: 3px 0 0 0;\"\u003eReassemble the PC housing, power on the system, and configure the card within the TwinCAT System Manager software.\u003c\/p\u003e\n  \u003c\/div\u003e\n\u003c\/div\u003e","brand":"BECKHOFF","offers":[{"title":"Default Title","offer_id":53106484937067,"sku":"FC3121","price":100.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0953\/3227\/0443\/files\/fc3121-1c5p2pw1ll1.png?v=1776244826","url":"https:\/\/www.plcprotech.com\/fr\/products\/beckhoff-fc3121-pci-express-profibus-master-slave-card","provider":"PLC ProTech Ltd.","version":"1.0","type":"link"}