{"product_id":"allen-bradley-1756-cjc-plc-controller","title":"Allen-Bradley 1756-CJC ControlLogix Accessory","description":"\u003cdiv style=\"max-width:100%;margin:0 auto;font-family:Arial,Helvetica,sans-serif;color:#1a1a1a;font-size:15px;line-height:1.6;overflow-wrap:anywhere;\"\u003e\n\u003ch2 style=\"font-size:22px;line-height:1.3;margin:0 0 12px;color:#1a1a1a;\" class=\"desc-model-title\"\u003eAllen-Bradley 1756-CJC Cold Junction Compensation Kit (CJC Thermistors, Qty 2) for ControlLogix\u003c\/h2\u003e\n\u003cp style=\"margin:0 0 12px;line-height:1.6;\"\u003eThe \u003cstrong\u003eAllen-Bradley 1756-CJC\u003c\/strong\u003e is a cold junction compensation (CJC) kit containing \u003cstrong\u003etwo precision thermistors\u003c\/strong\u003e for ControlLogix thermocouple input modules. It measures the terminal block reference temperature to compensate cold junction error in thermocouple readings, improving measurement accuracy. It is required for \u003cstrong\u003e1756-IT16\u003c\/strong\u003e and \u003cstrong\u003e1756-IRT8I\u003c\/strong\u003e thermocouple modules and is \u003cstrong\u003eordered separately\u003c\/strong\u003e — not included with the module. All CJC sensors for 1756 thermocouple modules are electrically identical. Lifecycle: Active. Technical data sourced from official Rockwell Automation product page and 1756-TD002. Supplied by SHLY-PLC, an independent industrial automation distributor.\u003c\/p\u003e\n\u003cp\u003eManufacturer status: active (currently in production).\u003c\/p\u003e\n\u003ch2 style=\"font-size:18px;line-height:1.3;margin:22px 0 10px;padding:0 0 6px;border-bottom:2px solid #cc0000;color:#1a1a1a;\"\u003eKey Features\u003c\/h2\u003e\n\u003cul style=\"margin:6px 0 14px 20px;padding:0;\"\u003e\n\u003cli style=\"margin:0 0 6px;line-height:1.55;\"\u003e\n\u003cstrong\u003eCatalog Number:\u003c\/strong\u003e 1756-CJC\u003c\/li\u003e\n\u003cli style=\"margin:0 0 6px;line-height:1.55;\"\u003e\n\u003cstrong\u003eKit Contents:\u003c\/strong\u003e 2 × Cold Junction Compensation thermistors\u003c\/li\u003e\n\u003cli style=\"margin:0 0 6px;line-height:1.55;\"\u003e\n\u003cstrong\u003eSensor Element:\u003c\/strong\u003e Precision thermistor (NTC)\u003c\/li\u003e\n\u003cli style=\"margin:0 0 6px;line-height:1.55;\"\u003e\n\u003cstrong\u003eCompatible Modules:\u003c\/strong\u003e 1756-IT16, 1756-IRT8I\u003c\/li\u003e\n\u003cli style=\"margin:0 0 6px;line-height:1.55;\"\u003e\n\u003cstrong\u003ePlatform:\u003c\/strong\u003e ControlLogix 1756 chassis system\u003c\/li\u003e\n\u003cli style=\"margin:0 0 6px;line-height:1.55;\"\u003e\n\u003cstrong\u003eFunction:\u003c\/strong\u003e Measures terminal block reference temperature for cold junction compensation\u003c\/li\u003e\n\u003cli style=\"margin:0 0 6px;line-height:1.55;\"\u003e\n\u003cstrong\u003eMounting:\u003c\/strong\u003e Installs on removable terminal block (RTB) of the analog module\u003c\/li\u003e\n\u003cli style=\"margin:0 0 6px;line-height:1.55;\"\u003e\n\u003cstrong\u003eSold Separately:\u003c\/strong\u003e Yes, not included with the thermocouple module\u003c\/li\u003e\n\u003cli style=\"margin:0 0 6px;line-height:1.55;\"\u003e\n\u003cstrong\u003eInterchangeability:\u003c\/strong\u003e Electrically identical across all 1756 thermocouple modules\u003c\/li\u003e\n\u003cli style=\"margin:0 0 6px;line-height:1.55;\"\u003e\n\u003cstrong\u003eLifecycle:\u003c\/strong\u003e Active\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2 style=\"font-size:18px;line-height:1.3;margin:22px 0 10px;padding:0 0 6px;border-bottom:2px solid #cc0000;color:#1a1a1a;\"\u003eTechnical Specifications\u003c\/h2\u003e\n\u003cp style=\"font-size:13px;color:#666666;margin:0 0 4px;\"\u003eOfficial Rockwell Automation Product Data (1756-CJC)\u003c\/p\u003e\n\u003ctable style=\"width:100%;border-collapse:collapse;table-layout:fixed;margin:6px 0 18px;font-size:14px;\"\u003e\n\u003ctr\u003e\u003ctd colspan=\"2\" style=\"background:#cc0000;color:#ffffff;padding:7px 11px;text-align:left;vertical-align:top;word-break:break-word;font-weight:700;\"\u003eTechnical Specifications\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width:42%;padding:7px 11px;border-bottom:1px solid #e6e8eb;background:#fafbfc;color:#333333;font-weight:600;text-align:left;vertical-align:top;word-break:break-word;\"\u003eCatalog Number\u003c\/td\u003e\n\u003ctd style=\"padding:7px 11px;border-bottom:1px solid #e6e8eb;vertical-align:top;word-break:break-word;\"\u003e1756-CJC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width:42%;padding:7px 11px;border-bottom:1px solid #e6e8eb;background:#fafbfc;color:#333333;font-weight:600;text-align:left;vertical-align:top;word-break:break-word;\"\u003eOfficial Description\u003c\/td\u003e\n\u003ctd style=\"padding:7px 11px;border-bottom:1px solid #e6e8eb;vertical-align:top;word-break:break-word;\"\u003eCJC Thermistors (Qty 2)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width:42%;padding:7px 11px;border-bottom:1px solid #e6e8eb;background:#fafbfc;color:#333333;font-weight:600;text-align:left;vertical-align:top;word-break:break-word;\"\u003eKit Contents\u003c\/td\u003e\n\u003ctd style=\"padding:7px 11px;border-bottom:1px solid #e6e8eb;vertical-align:top;word-break:break-word;\"\u003e2 × cold junction compensation thermistors\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width:42%;padding:7px 11px;border-bottom:1px solid #e6e8eb;background:#fafbfc;color:#333333;font-weight:600;text-align:left;vertical-align:top;word-break:break-word;\"\u003eCompatible I\/O Modules\u003c\/td\u003e\n\u003ctd style=\"padding:7px 11px;border-bottom:1px solid #e6e8eb;vertical-align:top;word-break:break-word;\"\u003e1756-IT16, 1756-IRT8I\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width:42%;padding:7px 11px;border-bottom:1px solid #e6e8eb;background:#fafbfc;color:#333333;font-weight:600;text-align:left;vertical-align:top;word-break:break-word;\"\u003ePlatform\u003c\/td\u003e\n\u003ctd style=\"padding:7px 11px;border-bottom:1px solid #e6e8eb;vertical-align:top;word-break:break-word;\"\u003eControlLogix 1756 chassis system\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width:42%;padding:7px 11px;border-bottom:1px solid #e6e8eb;background:#fafbfc;color:#333333;font-weight:600;text-align:left;vertical-align:top;word-break:break-word;\"\u003eSensor Element\u003c\/td\u003e\n\u003ctd style=\"padding:7px 11px;border-bottom:1px solid #e6e8eb;vertical-align:top;word-break:break-word;\"\u003ePrecision thermistor (NTC)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width:42%;padding:7px 11px;border-bottom:1px solid #e6e8eb;background:#fafbfc;color:#333333;font-weight:600;text-align:left;vertical-align:top;word-break:break-word;\"\u003eInput \/ Output Signal\u003c\/td\u003e\n\u003ctd style=\"padding:7px 11px;border-bottom:1px solid #e6e8eb;vertical-align:top;word-break:break-word;\"\u003eN\/A (accessory sensor kit)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width:42%;padding:7px 11px;border-bottom:1px solid #e6e8eb;background:#fafbfc;color:#333333;font-weight:600;text-align:left;vertical-align:top;word-break:break-word;\"\u003eUPC Code\u003c\/td\u003e\n\u003ctd style=\"padding:7px 11px;border-bottom:1px solid #e6e8eb;vertical-align:top;word-break:break-word;\"\u003e885630899190\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width:42%;padding:7px 11px;border-bottom:1px solid #e6e8eb;background:#fafbfc;color:#333333;font-weight:600;text-align:left;vertical-align:top;word-break:break-word;\"\u003eCountry of Origin\u003c\/td\u003e\n\u003ctd style=\"padding:7px 11px;border-bottom:1px solid #e6e8eb;vertical-align:top;word-break:break-word;\"\u003eChina\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width:42%;padding:7px 11px;border-bottom:1px solid #e6e8eb;background:#fafbfc;color:#333333;font-weight:600;text-align:left;vertical-align:top;word-break:break-word;\"\u003eEstimated Lead Time\u003c\/td\u003e\n\u003ctd style=\"padding:7px 11px;border-bottom:1px solid #e6e8eb;vertical-align:top;word-break:break-word;\"\u003e5 days\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width:42%;padding:7px 11px;border-bottom:1px solid #e6e8eb;background:#fafbfc;color:#333333;font-weight:600;text-align:left;vertical-align:top;word-break:break-word;\"\u003eStandard Warranty\u003c\/td\u003e\n\u003ctd style=\"padding:7px 11px;border-bottom:1px solid #e6e8eb;vertical-align:top;word-break:break-word;\"\u003e1 year\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd colspan=\"2\" style=\"background:#eef1f4;color:#1a1a1a;padding:6px 11px;font-weight:700;text-align:left;vertical-align:top;word-break:break-word;border-bottom:1px solid #e6e8eb;\"\u003eReference Documents\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width:42%;padding:7px 11px;border-bottom:1px solid #e6e8eb;background:#fafbfc;color:#333333;font-weight:600;text-align:left;vertical-align:top;word-break:break-word;\"\u003eTechnical Data Manual\u003c\/td\u003e\n\u003ctd style=\"padding:7px 11px;border-bottom:1px solid #e6e8eb;vertical-align:top;word-break:break-word;\"\u003e1756-TD002 (ControlLogix I\/O Specifications)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width:42%;padding:7px 11px;border-bottom:1px solid #e6e8eb;background:#fafbfc;color:#333333;font-weight:600;text-align:left;vertical-align:top;word-break:break-word;\"\u003eInstallation Reference\u003c\/td\u003e\n\u003ctd style=\"padding:7px 11px;border-bottom:1px solid #e6e8eb;vertical-align:top;word-break:break-word;\"\u003e1756-RM011 (Analog modules migration guide)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003cdiv style=\"font-size:13px;line-height:1.5;color:#990000;background:#fef0f0;border-left:3px solid #cc0000;padding:9px 12px;margin:12px 0;\"\u003e\n\u003cstrong\u003eModel note:\u003c\/strong\u003e 1756-CJC is an accessory kit, NOT a standalone I\/O module — it has no input\/output channels. It contains two CJC thermistors and must be ordered separately (not included with 1756-IT16 \/ 1756-IRT8I). All CJC sensors across 1756 thermocouple modules are electrically identical. Earlier-generation 1771 series CJC parts cannot be substituted.\u003c\/div\u003e\n\u003ch3 style=\"font-size:15px;line-height:1.4;margin:14px 0 3px;color:#1a1a1a;\"\u003eCompatibility \u0026amp; Cross-References\u003c\/h3\u003e\n\u003cp style=\"margin:0 0 12px;line-height:1.6;\"\u003eUse one 1756-CJC kit per 1756-IT16 or 1756-IRT8I thermocouple module. It mounts on the removable terminal block (RTB). This listing is provided by an independent industrial automation distributor; brand names and part numbers are used for product identification only.\u003c\/p\u003e\n\u003ch2 style=\"font-size:18px;line-height:1.3;margin:22px 0 10px;padding:0 0 6px;border-bottom:2px solid #cc0000;color:#1a1a1a;\"\u003eApplications\u003c\/h2\u003e\n\u003cul style=\"margin:6px 0 14px 20px;padding:0;\"\u003e\n\u003cli style=\"margin:0 0 6px;line-height:1.55;\"\u003eThermocouple temperature measurement in furnace, oven, heat treatment and process control\u003c\/li\u003e\n\u003cli style=\"margin:0 0 6px;line-height:1.55;\"\u003eAccurate cold junction compensation for ControlLogix temperature I\/O\u003c\/li\u003e\n\u003cli style=\"margin:0 0 6px;line-height:1.55;\"\u003eReplacement \/ spare parts for existing 1756-IT16 and 1756-IRT8I installations\u003c\/li\u003e\n\u003cli style=\"margin:0 0 6px;line-height:1.55;\"\u003eNew ControlLogix analog temperature I\/O projects\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2 style=\"font-size:18px;line-height:1.3;margin:22px 0 10px;padding:0 0 6px;border-bottom:2px solid #cc0000;color:#1a1a1a;\"\u003eWarranty \u0026amp; Shipping\u003c\/h2\u003e\n\u003cul style=\"margin:6px 0 14px 20px;padding:0;\"\u003e\n\u003cli style=\"margin:0 0 6px;line-height:1.55;\"\u003e\n\u003cstrong\u003eAvailability:\u003c\/strong\u003e Active model; contact us for real-time stock status.\u003c\/li\u003e\n\u003cli style=\"margin:0 0 6px;line-height:1.55;\"\u003e\n\u003cstrong\u003eDelivery:\u003c\/strong\u003e orders are processed within 2-4 business days after payment confirmation; standard worldwide delivery about 5-8 business days, express available, free shipping over $500.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eWarranty:\u003c\/strong\u003e 12-month seller warranty provided by SHLY-PLC. See our \u003ca href=\"\/pages\/return-policy\"\u003eReturn Policy\u003c\/a\u003e for coverage and claims.\u003c\/p\u003e\n\u003cdiv style=\"font-size:13px;line-height:1.5;color:#555555;background:#f7f7f8;border-left:3px solid #cc0000;padding:9px 12px 0 12px;margin:12px 0;\"\u003eIndependent supplier: Allen-Bradley part 1756-CJC is supplied by SHLY-PLC, an independent industrial automation distributor. Brand names and part numbers are used for product identification and remain the property of their respective owners; this listing is not affiliated with, sponsored or endorsed by the manufacturer.\u003c\/div\u003e\n\u003ch2 style=\"font-size:18px;line-height:1.3;margin:22px 0 10px;padding:0 0 6px;border-bottom:2px solid #cc0000;color:#1a1a1a;\"\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003ch3 style=\"font-size:15px;line-height:1.4;margin:14px 0 3px;color:#1a1a1a;\"\u003eQ: What is the 1756-CJC?\u003c\/h3\u003e\n\u003cp style=\"margin:0 0 12px;line-height:1.6;\"\u003eA: Cold junction compensation thermistor kit (Qty 2) for ControlLogix thermocouple modules, precision NTC thermistors measuring terminal block reference temperature.\u003c\/p\u003e\n\u003ch3 style=\"font-size:15px;line-height:1.4;margin:14px 0 3px;color:#1a1a1a;\"\u003eQ: Which modules use 1756-CJC?\u003c\/h3\u003e\n\u003cp style=\"margin:0 0 12px;line-height:1.6;\"\u003eA: 1756-IT16 and 1756-IRT8I. It must be ordered separately and is not included with the module.\u003c\/p\u003e\n\u003ch3 style=\"font-size:15px;line-height:1.4;margin:14px 0 3px;color:#1a1a1a;\"\u003eQ: How many CJC sensors are needed for one module?\u003c\/h3\u003e\n\u003cp style=\"margin:0 0 12px;line-height:1.6;\"\u003eA: One 1756-CJC kit (2 thermistors) serves one thermocouple module RTB.\u003c\/p\u003e\n\u003ch3 style=\"font-size:15px;line-height:1.4;margin:14px 0 3px;color:#1a1a1a;\"\u003eQ: Can I reuse CJC sensors from older PLC series?\u003c\/h3\u003e\n\u003cp style=\"margin:0 0 12px;line-height:1.6;\"\u003eA: No. 1756-CJC thermistors are electrically matched for ControlLogix circuits; 1771 series CJC parts cannot substitute.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cp style=\"font-size:12px;color:#888888;text-align:center;margin:18px 0 4px;\"\u003e1756-CJC · Technical reference data · Independently supplied by SHLY-PLC\u003c\/p\u003e\n\n","brand":"Allen-Bradley","offers":[{"title":"Default Title","offer_id":46335258820861,"sku":"1756-CJC","price":159.42,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0747\/5665\/3309\/files\/cjc_godplc.jpg?v=1792292407","url":"https:\/\/shly-plc.com\/products\/allen-bradley-1756-cjc-plc-controller","provider":"SHLY-PLC","version":"1.0","type":"link"}