{"product_id":"abb-cma126-3dde300406-industrial-interface-card","title":"ABB CMA126 3DDE300406 Industrial Interface Card","description":"\u003cp\u003eThe \u003cstrong\u003eABB CMA126\u003c\/strong\u003e, also cataloged as the \u003cstrong\u003eCMA126\u003c\/strong\u003e Industrial Interface Card (Product ID: \u003cstrong\u003e3DDE300406\u003c\/strong\u003e), operates as a dedicated hardware component for localized digital network linking, serial register translation, and field telemetry routing within ABB advanced control architectures. The compact transceiver assembly processes serial electrical signals natively at the hardware tier to stream industrial communication variables directly into host system registries.\u003c\/p\u003e\n\u003ch3\u003eHardware Specifications\u003c\/h3\u003e\n\u003cfigure class=\"table\"\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003e\u003cstrong\u003eParameter\u003c\/strong\u003e\u003c\/th\u003e\n\u003cth\u003e\u003cstrong\u003eSpecification\u003c\/strong\u003e\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eModel\u003c\/td\u003e\n\u003ctd\u003eCMA126\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProduct ID\u003c\/td\u003e\n\u003ctd\u003e3DDE300406\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eABB\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eComponent Typology\u003c\/td\u003e\n\u003ctd\u003eIndustrial Interface Card\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOrigin\u003c\/td\u003e\n\u003ctd\u003eGermany\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNet Weight\u003c\/td\u003e\n\u003ctd\u003e120 g (0.26 lbs)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003e100 mm W x 75 mm H x 30 mm D\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperational Supply Voltage\u003c\/td\u003e\n\u003ctd\u003e24 VDC nominal operating loop potential\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaximum Input Current\u003c\/td\u003e\n\u003ctd\u003e50 mA maximum continuous internal current draw\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePrimary Communication Link\u003c\/td\u003e\n\u003ctd\u003eModbus RTU serial network protocol\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAmbient Operating Envelope\u003c\/td\u003e\n\u003ctd\u003e-20 to +60 deg C (-4 to +140 deg F)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProduct Type\u003c\/td\u003e\n\u003ctd\u003eDistributed I\/O Modules\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003eIndustrial Control \u0026amp; Drive Communications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBackplane Bus Communication Velocity Licences and Frame Assembly\u003c\/strong\u003e The module integrates a micro-coded serial processing element that handles native Modbus RTU packet structures. This layout performs byte verification, parity check monitoring, and frame extraction tasks parallel to the primary system backplane bus scanning loops, delivering continuous data translation without adding load to host execution cycles.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eI\/O Density Scaling and Serial Interface Isolation\u003c\/strong\u003e The interface card packs a complete isolated communication gateway onto a lightweight 120 g hardware print footprint. The internal logic filters high-frequency electrical switching noise across the 24 VDC supply traces, stabilizing communication registers against voltage ripples and ground shifts common in dense multi-drop drive networks and motor control panels.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003eQ: What programmatic or electrical errors manifest if the Modbus RTU transmission line encounters a high-resistance grounding fault?\u003c\/p\u003e\n\u003cp\u003eA: A high-resistance field grounding fault skews the differential electrical balances on the serial network lines. This imbalance distorts the incoming bit edges, causing high-frequency packet timeout flags, driving up the internal CRC error count, and triggering a communication timeout register bit inside the host controller.\u003c\/p\u003e\n\u003cp\u003eQ: Can the CMA126 interface card be hot-swapped while the 24 VDC power distribution rail is active?\u003c\/p\u003e\n\u003cp\u003eA: No, unseating or installing the circuit board while the 24 VDC line potential is active is restricted. Pulling the module during runtime can cause electrical arcing across the edge connectors, corrupting active data bytes on the shared serial track and risking localized thermal damage to low-voltage internal registers.\u003c\/p\u003e","brand":"ABB","offers":[{"title":"Default Title","offer_id":45121622704243,"sku":"CMA126 3DDE300406","price":233.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0644\/4348\/2227\/files\/screenshot_2026-05-25_09-08-11_ace7783a-750b-40ea-b384-24e3611964af.png?v=1782116195","url":"https:\/\/www.dcssupplier.com\/products\/abb-cma126-3dde300406-industrial-interface-card","provider":"DcsSupplier Limited","version":"1.0","type":"link"}