{"product_id":"1756-of8h-allen-bradley-controllogix-series-analog-output-module","title":"1756-OF8H Allen-Bradley ControlLogix Series Analog Output Module","description":"\u003cp\u003eThe \u003cstrong\u003eAllen-Bradley 1756-OF8H\u003c\/strong\u003e, also cataloged as the \u003cstrong\u003e1756-OF8H\u003c\/strong\u003e Analog Output Module, operates as a dedicated hardware component for converting controller data into analog current and voltage output signals within ControlLogix automation platforms.\u003c\/p\u003e\n\u003ch3\u003eModel Reference and Configuration\u003c\/h3\u003e\n\u003cp\u003eThe Allen-Bradley 1756-OF8H is an 8-channel analog output module designed for ControlLogix chassis systems. The module provides differential analog output channels with HART protocol capability for current and voltage signal transmission.\u003c\/p\u003e\n\u003cp\u003eThe output channels receive processed values from the Logix controller and convert digital controller commands into field-level analog signals. Configuration requires compatible controller firmware, Logix software settings, and chassis installation.\u003c\/p\u003e\n\u003ch3\u003eHardware Specifications\u003c\/h3\u003e\n\u003cfigure\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eParameter\u003c\/th\u003e\n\u003cth\u003eSpecification\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\u003e1756-OF8H\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eAllen-Bradley\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProduct Type\u003c\/td\u003e\n\u003ctd\u003eAnalog Output Modules\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSeries\u003c\/td\u003e\n\u003ctd\u003eControlLogix\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOrigin\u003c\/td\u003e\n\u003ctd\u003eUSA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e0.22 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eShipping Dimensions\u003c\/td\u003e\n\u003ctd\u003e3.5 x 14.2 x 14.5 cm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temp\u003c\/td\u003e\n\u003ctd\u003eNot specified\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Consumption\u003c\/td\u003e\n\u003ctd\u003eNot specified\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNumber of Outputs\u003c\/td\u003e\n\u003ctd\u003e8 differential outputs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput Type\u003c\/td\u003e\n\u003ctd\u003eCurrent and voltage analog output\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput Current Range\u003c\/td\u003e\n\u003ctd\u003e0-20 mA or 4-20 mA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIsolation Voltage\u003c\/td\u003e\n\u003ctd\u003e50 V continuous\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOvervoltage Protection\u003c\/td\u003e\n\u003ctd\u003e24 VDC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eResolution\u003c\/td\u003e\n\u003ctd\u003e15-16 bits\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCurrent Draw (5.1 VDC)\u003c\/td\u003e\n\u003ctd\u003e230 mA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCurrent Draw (24 VDC)\u003c\/td\u003e\n\u003ctd\u003e230 mA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProtocol Support\u003c\/td\u003e\n\u003ctd\u003eHART protocol\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003eControlLogix Analog Output Characteristics\u003c\/h3\u003e\n\u003cp\u003eThe 1756-OF8H interfaces with ControlLogix processor modules through the chassis backplane and provides eight analog output channels for external devices. The module converts controller output values into configured current or voltage signals.\u003c\/p\u003e\n\u003cp\u003eThe HART protocol capability allows compatible field devices to exchange additional digital information through supported analog current loops. Output configuration parameters are managed through the Logix controller environment.\u003c\/p\u003e\n\u003ch3\u003eDeterministic Backplane Data Processing\u003c\/h3\u003e\n\u003cp\u003eAllen-Bradley ControlLogix systems use deterministic backplane communication for module data exchange. The 1756-OF8H receives output commands from the processor and updates field output channels according to configured module parameters.\u003c\/p\u003e\n\u003cp\u003eFirmware flash compatibility, electronic keying settings, and controller revision matching must be verified during system integration. The module operation depends on correct communication between the processor and I\/O subsystem.\u003c\/p\u003e\n\u003ch3\u003eSignal Isolation and Output Protection\u003c\/h3\u003e\n\u003cp\u003eThe module provides 50 V continuous isolation between the output circuitry and internal electronics. The output channels include 24 VDC overvoltage protection to reduce the risk of damage from field wiring conditions.\u003c\/p\u003e\n\u003cp\u003eProper shield termination, grounding practices, and cable separation are required when installing analog output wiring near high-voltage or high-frequency equipment.\u003c\/p\u003e\n\u003ch3\u003eOrdering Information\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e1 x Allen-Bradley 1756-OF8H ControlLogix Analog Output Module\u003c\/li\u003e\n\u003cli\u003e1 x ControlLogix compatible module assembly\u003c\/li\u003e\n\u003cli\u003e1 x Product identification label\u003c\/li\u003e\n\u003cli\u003eControlLogix chassis, power supply, field wiring, and external HART devices are not included unless separately specified\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eInstallation Guidelines\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eModule Mounting\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eInstall the module into a compatible ControlLogix chassis slot.\u003c\/li\u003e\n\u003cli\u003eVerify chassis power capacity before adding the module.\u003c\/li\u003e\n\u003cli\u003eConfirm module seating and locking mechanism engagement.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eField Wiring\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eUse appropriate shielded cable for analog output connections.\u003c\/li\u003e\n\u003cli\u003eSeparate analog signal wiring from power conductors and switching circuits.\u003c\/li\u003e\n\u003cli\u003eConfirm current or voltage output configuration before commissioning.\u003c\/li\u003e\n\u003cli\u003eVerify HART device compatibility when using HART communication functions.\u003c\/li\u003e\n\u003cli\u003eCheck output values through controller diagnostics after startup.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003eWhat type of signals does the 1756-OF8H provide?\u003c\/p\u003e\n\u003cp\u003eThe module provides analog current and voltage output signals through eight differential output channels.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eHow many output channels are available?\u003c\/p\u003e\n\u003cp\u003eThe 1756-OF8H provides 8 differential analog output channels for ControlLogix applications.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eDoes the module support HART communication?\u003c\/p\u003e\n\u003cp\u003eYes. The module supports HART protocol operation with compatible field devices.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eWhat current ranges are supported?\u003c\/p\u003e\n\u003cp\u003eThe module supports 0-20 mA and 4-20 mA analog current output ranges.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eWhat is the module resolution?\u003c\/p\u003e\n\u003cp\u003eThe analog output resolution is 15-16 bits depending on configured output operation.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eWhat is the isolation voltage rating?\u003c\/p\u003e\n\u003cp\u003eThe module provides 50 V continuous isolation for the output circuitry.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eWhat is the overvoltage protection rating?\u003c\/p\u003e\n\u003cp\u003eThe output channels include 24 VDC overvoltage protection.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eWhat configuration is required before operation?\u003c\/p\u003e\n\u003cp\u003eThe module requires Logix controller configuration, output channel setup, and compatible firmware settings before use.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Allen-Bradley","offers":[{"title":"Default Title","offer_id":46066421235885,"sku":"1756-OF8H","price":129.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0733\/1613\/9181\/files\/allen-bradley_1756-of8h.jpg?v=1786348822","url":"https:\/\/www.maxwellplc.com\/products\/1756-of8h-allen-bradley-controllogix-series-analog-output-module","provider":"Maxwell PLC Ltd","version":"1.0","type":"link"}