{"product_id":"allen-bradley-1794-apb-flex-i-o-profibus-adapter-module","title":"Allen-Bradley 1794-APB FLEX I\/O PROFIBUS Adapter Module","description":"\u003ch2\u003eAllen-Bradley 1794-APB FLEX I\/O PROFIBUS Adapter Module\u003c\/h2\u003e\n\u003cp\u003eConfigured for PROFIBUS DP communication and Flex I\/O data exchange in Allen-Bradley Flex I\/O 1794 systems, the \u003cstrong\u003eAllen-Bradley 1794-APB\u003c\/strong\u003e (\u003cstrong\u003e1794-APB\u003c\/strong\u003e PROFIBUS Adapter Module) provides direct physical\/electrical execution between PROFIBUS networks and installed Flex I\/O modules.\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\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\u003e1794-APB\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\u003eOrigin\u003c\/td\u003e\n\u003ctd\u003eUnited States\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProduct Type\u003c\/td\u003e\n\u003ctd\u003ePROFIBUS Adapter Module\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProduct Line\u003c\/td\u003e\n\u003ctd\u003eFlex I\/O 1794\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eModule Type\u003c\/td\u003e\n\u003ctd\u003eCommunication Adapter\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCommunication Protocol\u003c\/td\u003e\n\u003ctd\u003ePROFIBUS DP\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCommunication Port\u003c\/td\u003e\n\u003ctd\u003eOne 9-pin D-shell connector\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTransmission Speed\u003c\/td\u003e\n\u003ctd\u003eUp to 12 Mbps\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput Voltage\u003c\/td\u003e\n\u003ctd\u003e24 VDC nominal\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput Voltage Range\u003c\/td\u003e\n\u003ctd\u003e19.2-31.2 VDC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFlexbus Output Current\u003c\/td\u003e\n\u003ctd\u003e640 mA maximum at 5 VDC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIsolation Voltage\u003c\/td\u003e\n\u003ctd\u003e850 VDC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Consumption\u003c\/td\u003e\n\u003ctd\u003e400 mA maximum\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Dissipation\u003c\/td\u003e\n\u003ctd\u003e7.68 W maximum at 19.2 VDC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eThermal Dissipation\u003c\/td\u003e\n\u003ctd\u003e26 BTU\/hour at 19.2 VDC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eI\/O Capacity\u003c\/td\u003e\n\u003ctd\u003eSupports up to 8 Flex I\/O modules\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e0.4 lbs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInstallation Method\u003c\/td\u003e\n\u003ctd\u003eDIN Rail or Panel Mount\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePanel Mount Kit\u003c\/td\u003e\n\u003ctd\u003e1794-NMIADAPTER\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eModule Indicators\u003c\/td\u003e\n\u003ctd\u003eSTATUS Red\/Green, PROFIBUS Red\/Green\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003eProfinet \/ EtherNet-IP Deterministic Networks and Backplane Communication\u003c\/h3\u003e\n\u003cp\u003eThe 1794-APB operates as a PROFIBUS communication interface within the Flex I\/O 1794 platform, transferring I\/O status information between PROFIBUS DP masters and connected Flex I\/O modules. The adapter supports communication rates up to 12 Mbps through the 9-pin D-shell PROFIBUS connector.\u003c\/p\u003e\n\u003cp\u003eThe module provides Flexbus communication with a maximum output current capability of 640 mA at 5 VDC for connected I\/O modules. The communication structure allows installation of up to eight Flex I\/O modules on the adapter assembly while maintaining controlled backplane data exchange.\u003c\/p\u003e\n\u003cp\u003eThe hardware design includes electrical isolation rated at 850 VDC between communication and field-side circuits. Status indication is provided through dedicated red\/green LEDs for module operation and PROFIBUS network state monitoring.\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003eQ: How many Flex I\/O modules can the 1794-APB support?\u003cbr\u003eA: The 1794-APB adapter supports installation of up to eight Flex I\/O modules on the Flex I\/O system assembly.\u003c\/p\u003e\n\u003cp\u003eQ: What PROFIBUS connection interface is provided on this module?\u003cbr\u003eA: The module uses one 9-pin D-shell connector for PROFIBUS DP communication.\u003c\/p\u003e\n\u003cp\u003eQ: Does the 1794-APB support hot-swapping of connected I\/O modules?\u003cbr\u003eA: The provided technical data does not specify hot-swap capability. Module replacement should follow standard Flex I\/O power isolation and maintenance procedures.\u003c\/p\u003e\n\u003ch3\u003eField Installation Guidelines\u003c\/h3\u003e\n\u003cp\u003eInstall the 1794-APB on a compatible DIN rail or panel mounting assembly according to Flex I\/O system installation requirements. Verify that the 24 VDC supply wiring maintains correct polarity before energizing the adapter.\u003c\/p\u003e\n\u003cp\u003eUse standard PROFIBUS cable construction and maintain separation between communication wiring and high-voltage or high-current conductors to reduce electrical interference. Connect cable shielding according to the site grounding method and PROFIBUS installation practice.\u003c\/p\u003e\n\u003cp\u003eBefore operation, verify the PROFIBUS connector seating, network termination configuration, and LED status indicators. Confirm that connected Flex I\/O modules remain within the adapter current loading capability.\u003c\/p\u003e","brand":"Allen-Bradley","offers":[{"title":"Default Title","offer_id":43768079188058,"sku":"1794-APB","price":123.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0612\/4601\/3530\/files\/1794-APB2.jpg?v=1785476893","url":"https:\/\/www.plcmasters.com\/products\/allen-bradley-1794-apb-flex-i-o-profibus-adapter-module","provider":"PLC Masters Ltd.","version":"1.0","type":"link"}