{"product_id":"molex-sst-sr4-clx-rll-controllogix-serial-communication-module","title":"Molex SST‑SR4‑CLX‑RLL | ControlLogix Serial Communication Module","description":"\u003ch3\u003e\u003cstrong\u003eProduct Description\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eThe\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eMolex SST‑SR4‑CLX‑RLL\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eis a specialized\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003ecommunication module\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003edesigned to bridge Allen-Bradley ControlLogix controllers with legacy Honeywell IPC 620 or Modbus serial I\/O networks. This high-performance module functions as a gateway or scanner, allowing modern PLC systems to interface directly with existing distributed I\/O racks without rewiring, saving time and reducing retrofit costs.\u003c\/p\u003e\n\u003cp\u003eEngineered for industrial reliability, the\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eSST‑SR4‑CLX‑RLL\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003esupports multiple serial communication standards and ensures fast, accurate data transfer between diverse control systems.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003e\u003cstrong\u003eKey Features\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eLegacy System Integration:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eActs as a scanner for Honeywell IPC 620 racks, enabling modern ControlLogix systems to manage legacy I\/O.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eMulti-Protocol Support:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eCompatible with Modbus RTU and ASCII in both Master and Slave configurations.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eFour Independent Channels:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eEach channel supports RS‑232 or RS‑485 communication with speeds from 110 bps to 115,200 bps.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eDirect and Paging Modes:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eI\/O capacity up to 496 bytes in direct mode and up to 32,000 words in paging mode.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003ePlug-and-Play Configuration:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eEasily mounts in a single ControlLogix rack slot and draws power from the backplane.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eRobust Industrial Design:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eProvides 500 V galvanic isolation between channels to protect the controller from electrical surges.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eDiagnostics and Status Monitoring:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eFront-panel LEDs display power, activity, and fault conditions for simplified troubleshooting.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eSoftware Mapping Tools:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eCompatible with configuration utilities to map legacy I\/O points to ControlLogix tags.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003e\u003cstrong\u003eTechnical Specifications\u003c\/strong\u003e\u003c\/h3\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr class=\"firstRow\"\u003e\n\u003cth align=\"left\"\u003eFeature\u003c\/th\u003e\n\u003cth align=\"left\"\u003eSpecification\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd align=\"left\"\u003e\u003cstrong\u003eModel Number\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd align=\"left\"\u003e\u003cstrong\u003eSST‑SR4‑CLX‑RLL\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd align=\"left\"\u003e\u003cstrong\u003eManufacturer\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd align=\"left\"\u003eMolex\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd align=\"left\"\u003e\u003cstrong\u003eProduct Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd align=\"left\"\u003eCommunication Module \/ ControlLogix Interface\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd align=\"left\"\u003e\u003cstrong\u003eNumber of Channels\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd align=\"left\"\u003e4 independent serial channels\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd align=\"left\"\u003e\u003cstrong\u003eSupported Protocols\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd align=\"left\"\u003eModbus RTU\/ASCII Master \u0026amp; Slave\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd align=\"left\"\u003e\u003cstrong\u003eElectrical Interfaces\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd align=\"left\"\u003eRS‑232, RS‑485\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd align=\"left\"\u003e\u003cstrong\u003eConnector Types\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd align=\"left\"\u003e9-Pin D-Sub Male, RJ45 Serial Connectors\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd align=\"left\"\u003e\u003cstrong\u003eIsolation Voltage\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd align=\"left\"\u003e500 V galvanic isolation between channels\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd align=\"left\"\u003e\u003cstrong\u003eI\/O Capacity\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd align=\"left\"\u003eDirect mode: 496 bytes; Paging mode: 32,000 words\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd align=\"left\"\u003e\u003cstrong\u003ePower Consumption\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd align=\"left\"\u003e5.5 W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd align=\"left\"\u003e\u003cstrong\u003eVoltage Rating\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd align=\"left\"\u003e5\/24 VDC via ControlLogix backplane\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd align=\"left\"\u003e\u003cstrong\u003eOperating Temperature\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd align=\"left\"\u003e0 °C to +60 °C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd align=\"left\"\u003e\u003cstrong\u003eStorage Temperature\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd align=\"left\"\u003e−40 °C to +85 °C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd align=\"left\"\u003e\u003cstrong\u003eWeight\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd align=\"left\"\u003e1.32 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd align=\"left\"\u003e\u003cstrong\u003eMounting\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd align=\"left\"\u003eSingle slot in 1756 ControlLogix chassis\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003chr\u003e\n\u003ch3\u003e\u003cstrong\u003eApplication Scenarios\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eThe\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eSST‑SR4‑CLX‑RLL\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eis ideal for facilities migrating from Honeywell IPC 620 or Modbus serial networks to modern Rockwell Automation architectures. It eliminates the need for expensive field rewiring while maintaining full operational control over existing I\/O racks. Common applications include process control plants, chemical facilities, and legacy manufacturing installations where hybrid PLC networks must coexist.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003e\u003cstrong\u003eFAQ\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eQ: How many I\/O channels does the SST‑SR4‑CLX‑RLL support?\u003c\/strong\u003e\u003cbr\u003eA: The module provides four independent serial communication channels.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Can it connect to both Modbus and Honeywell IPC 620 I\/O networks?\u003c\/strong\u003e\u003cbr\u003eA: Yes, it supports Modbus RTU\/ASCII and acts as a scanner for Honeywell IPC 620 remote I\/O.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: What electrical interfaces are available?\u003c\/strong\u003e\u003cbr\u003eA: Each channel supports RS‑232 and RS‑485 interfaces.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Is the module protected from electrical surges?\u003c\/strong\u003e\u003cbr\u003eA: Yes, it provides 500 V galvanic isolation between channels.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: How is the module powered?\u003c\/strong\u003e\u003cbr\u003eA: Power is supplied via the ControlLogix backplane (5–24 VDC).\u003c\/p\u003e","brand":"MOLEX","offers":[{"title":"Default Title","offer_id":44120970756195,"sku":"SST-SR4-CLX-RLL","price":180.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0549\/2775\/3315\/files\/MOLEXSST-SR4-CLX-RLL-3.jpg?v=1776323737","url":"https:\/\/precisemodule.com\/products\/molex-sst-sr4-clx-rll-controllogix-serial-communication-module","provider":"Precise Module Ltd.","version":"1.0","type":"link"}