{"product_id":"discrete-i-o-modules-allen-bradley-1771-sim","title":"Discrete I\/O Modules | Allen-Bradley 1771-SIM","description":"\u003cp\u003eThe \u003cstrong\u003e1771-SIM\u003c\/strong\u003e is an industrial discrete input and output simulator module manufactured by Allen-Bradley (Rockwell Automation) for the 1771 Universal I\/O system architecture. Designed for system debugging, PLC program verification, and control panel commissioning, this module provides 8 front-panel toggle switches for input simulation and 8 LED indicators for output monitoring, eliminating the need for physical field wiring during testing.\u003c\/p\u003e\n\u003ch3\u003eInput Simulation and Signal Verification\u003c\/h3\u003e\n\u003cp\u003eThe front panel incorporates 8 individual toggle switches that allow commissioning technicians to manually apply logic HIGH or LOW signals directly to the system processor via the backplane. This permits real-time verification of control logic, alarm thresholds, and sequence timing before connecting actual field devices such as pushbuttons, limit switches, or proximity sensors.\u003c\/p\u003e\n\u003ch3\u003eBackplane Powering and Housing Design\u003c\/h3\u003e\n\u003cp\u003eOperating without external field power connections, the unit draws a modest 0.3 A current at 5 VDC directly from the 1771 Universal I\/O rack backplane. The 8 dedicated LED status indicators receive control signals from the PLC output image table, visually displaying output channel states. The module occupies a single slot in any standard 1771 I\/O chassis, making it an essential diagnostic tool for legacy PLC-5 control systems.\u003c\/p\u003e\n\u003ch3\u003eParameter Specification\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\u003e1771-SIM\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eAllen-Bradley (Rockwell Automation)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProduct Category\u003c\/td\u003e\n\u003ctd\u003eDiscrete Input\/Output Simulator Modules\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSystem Platform\u003c\/td\u003e\n\u003ctd\u003ePLC-5 \/ 1771 Universal I\/O\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput Simulation\u003c\/td\u003e\n\u003ctd\u003e8 toggle switches\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput Indication\u003c\/td\u003e\n\u003ctd\u003e8 LED indicators\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Voltage\u003c\/td\u003e\n\u003ctd\u003e5 VDC (from backplane)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBackplane Current\u003c\/td\u003e\n\u003ctd\u003e0.3 A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSlot Requirement\u003c\/td\u003e\n\u003ctd\u003e1 slot in 1771 Universal I\/O chassis\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eExternal Wiring Requirements\u003c\/td\u003e\n\u003ctd\u003eNone\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e1.65 lbs (0.75 kg)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003cp\u003eFrequently Asked Questions\u003c\/p\u003e\n\u003cp\u003eQ: How is the Allen-Bradley 1771-SIM module powered during testing? A: The module receives its required 5 VDC power directly from the 1771 chassis backplane bus, drawing 0.3 A without requiring external power supplies or field wiring.\u003c\/p\u003e\n\u003cp\u003eQ: Can the 1771-SIM be used in any standard 1771 Universal I\/O chassis slot? A: Yes, it is a single-slot module that installs into any standard 1771 rack position alongside standard digital or analog I\/O cards.\u003c\/p\u003e","brand":"Allen-Bradley","offers":[{"title":"Default Title","offer_id":66999962665075,"sku":"1771-SIM","price":88.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0644\/4348\/2227\/files\/1771-SIM4_Cocoai.jpg?v=1793083051","url":"https:\/\/www.dcssupplier.com\/ar\/products\/discrete-i-o-modules-allen-bradley-1771-sim","provider":"DcsSupplier Limited","version":"1.0","type":"link"}