{"product_id":"schneider-tsx3721101-1-modbus-modbus-rtu-19-2-kbit-s-proven-1","title":"Schneider TSX3721101 1 Modbus Modbus RTU 19.2 kbit\/s - Proven 1","description":"\u003ch2\u003eProduct Introduction\u003c\/h2\u003e\u003cp\u003eThe Schneider TSX3721101 is a modular base controller from the TSX Micro 37 21\/22 PLC family. Designed for demanding industrial automation environments, this controller integrates a 1 Modbus Modbus RTU 19.2 kbit\/s communication link, enabling reliable data exchange with other devices. Its robust construction includes overload and short-circuit protection, reducing the risk of system failures.\u003c\/p\u003e\u003ch2\u003eIndustry Applications\u003c\/h2\u003e\u003cp\u003eIn manufacturing lines, the TSX3721101 handles process control, machine sequencing, and data acquisition. Its Modbus RTU interface connects easily to sensors, drives, and HMIs. The real-time clock and multiple memory options support complex programs and data logging. For example, in a packaging plant, the controller manages conveyor speeds and product inspection with high precision.\u003c\/p\u003e\u003cp\u003eAnother application is in water treatment facilities, where the TSX3721101 monitors pumps, valves, and flow rates. Its immunity to electromagnetic interference (tested to IEC 1000-4-3 level 3) ensures stable operation near motors and switchgear. The controller's 3-slot base allows for flexible I\/O expansion to match system needs.\u003c\/p\u003e\u003ch2\u003eInstallation \u0026amp; Setup Guidance\u003c\/h2\u003e\u003cp\u003eMount the TSX3721101 on a DIN rail in a clean, dry enclosure. Ensure adequate ventilation to maintain ambient temperatures between 0 and 60 °C. Connect the Modbus RTU link using shielded twisted-pair cable with proper termination resistors. The serial link (TER\/AUX) supports Uni-Telway at 19.2 kbit\/s for programming and diagnostics. Use the PCMCIA card slot for additional memory if needed—the controller supports up to 128 Kwords of program and data storage with the card.\u003c\/p\u003e\u003cp\u003eConfigure the system using Schneider Electric's programming software (e.g., PL7 Junior\/Pro). Assign %MWi and %KWi addresses according to your application. The controller supports one fast task, one master task, and up to 16 event tasks, allowing precise timing control.\u003c\/p\u003e\u003ch2\u003eMaintenance \u0026amp; Reliability\u003c\/h2\u003e\u003cp\u003ePeriodically inspect the TSX3721101 for dust accumulation and loose connections. Check the real-time clock battery (if used) to maintain date\/time during power loss. The internal flash memory retains 15 Kwords of data, so critical parameters survive unexpected shutdowns. With overload and short-circuit protection, the controller minimizes damage from wiring faults. Operating altitude up to 2000 m and relative humidity 5–95% non-condensing ensure reliable performance in varied environments.\u003c\/p\u003e\u003ch2\u003eTroubleshooting \u0026amp; Common Issues\u003c\/h2\u003e\u003cp\u003eCommon issues include communication errors on the Modbus RTU link. Verify cable quality, termination, and baud rate matching (19.2 kbit\/s). If the controller fails to start, check the power supply—total useful secondary power is 16 W. Use the front-panel LEDs (power, run, communication) for quick status checks. For persistent problems, use the TER\/AUX serial link to access diagnostics. The IEC 1000-4-4 level 3 fast transient immunity helps avoid spurious resets in noisy environments.\u003c\/p\u003e\u003ch2\u003eSelection Guide \u0026amp; Purchasing Advice\u003c\/h2\u003e\u003cp\u003eBefore purchasing the Schneider TSX3721101, confirm your system's power supply requirements and I\/O slot count (3 slots total). Verify that your existing programming software supports the TSX Micro series. For replacement applications, this controller directly fits standard 3-slot backplanes. For expert advice and competitive pricing, contact us at ubest101—your trusted supplier for industrial automation spares.\u003c\/p\u003e","brand":"Schneider","offers":[{"title":"Default","offer_id":44404081688675,"sku":"TSX3721101","price":272.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0678\/8635\/0435\/files\/TSX3721101_1.jpg?v=1785026600","url":"https:\/\/www.plcsourcepro.com\/products\/schneider-tsx3721101-1-modbus-modbus-rtu-19-2-kbit-s-proven-1","provider":"PLC Source PRO","version":"1.0","type":"link"}