{"product_id":"allen-bradley-plc-5-1785-enet-ethernet-interface-module","title":"Allen-Bradley PLC-5 1785-ENET Ethernet Interface Module","description":"\u003cp\u003eConfigured for Ethernet TCP\/IP communication expansion in PLC-5 controller systems, the \u003cstrong\u003eAllen-Bradley 1785-ENET\u003c\/strong\u003e (\u003cstrong\u003e1785-ENET\u003c\/strong\u003e Ethernet Interface Module) provides direct network access through an RJ45 communication port and PLC-5 backplane connection.\u003c\/p\u003e\n\u003ch3\u003eModel Identification\u003c\/h3\u003e\n\u003cp\u003eThe 1785-ENET is an Ethernet communication expansion module designed for installation in a 1771 PLC-5 chassis. It connects directly to the PLC-5 processor communication path and provides Ethernet TCP\/IP connectivity for PLC-5 controllers.\u003c\/p\u003e\n\u003cp\u003eCompatible module revisions vary by PLC-5 processor family. Series and revision compatibility should be verified against the installed PLC-5 processor firmware and chassis configuration before replacement.\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\u003e1785-ENET\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\u003eEthernet Interface Module\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSeries\u003c\/td\u003e\n\u003ctd\u003ePLC-5 Series\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\u003e0.96 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eShipping Dimensions\u003c\/td\u003e\n\u003ctd\u003e3.3 x 14.8 x 27.4 cm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temp\u003c\/td\u003e\n\u003ctd\u003e0 deg C to +60 deg C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStorage Temperature\u003c\/td\u003e\n\u003ctd\u003e-40 deg C to +85 deg C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Supply\u003c\/td\u003e\n\u003ctd\u003e5 VDC from PLC-5 backplane\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBackplane Current\u003c\/td\u003e\n\u003ctd\u003e1.0 A @ 5 VDC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Dissipation\u003c\/td\u003e\n\u003ctd\u003e5 W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHeat Dissipation\u003c\/td\u003e\n\u003ctd\u003e17.06 BTU\/hr\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCommunication Port\u003c\/td\u003e\n\u003ctd\u003e8-pin RJ45 Ethernet port\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCommunication Protocol\u003c\/td\u003e\n\u003ctd\u003eEthernet TCP\/IP\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eData Rate\u003c\/td\u003e\n\u003ctd\u003e10\/100 Mbps auto-negotiation\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIsolation Voltage\u003c\/td\u003e\n\u003ctd\u003e50 V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIEC Temperature Code\u003c\/td\u003e\n\u003ctd\u003eT5\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003eEthernet Communication Architecture\u003c\/h3\u003e\n\u003cp\u003eThe 1785-ENET uses PLC-5 backplane communication to exchange controller data through an Ethernet TCP\/IP network. The module provides a single RJ45 Ethernet interface with automatic network speed detection between 10 Mbps and 100 Mbps.\u003c\/p\u003e\n\u003cp\u003eStatus indication is provided through front-panel LEDs:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eSTAT indicator monitors Ethernet link activity and module status.\u003c\/li\u003e\n\u003cli\u003e100M indicator identifies operation on a 100 Mbps Ethernet connection.\u003c\/li\u003e\n\u003cli\u003e10M indicator identifies operation on a 10 Mbps Ethernet connection.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe module supports Ethernet communication expansion for Enhanced PLC-5 controllers, Ethernet PLC-5 controllers, and ControlNet PLC-5 controller configurations depending on series and revision.\u003c\/p\u003e\n\u003ch3\u003ePLC-5 Network Integration Features\u003c\/h3\u003e\n\u003cp\u003eAllen-Bradley PLC-5 systems use a backplane-based architecture where communication modules exchange data through the chassis bus. The 1785-ENET maintains compatibility with PLC-5 processor families through defined series and firmware revisions.\u003c\/p\u003e\n\u003cp\u003eEtherNet\/IP deterministic networks require proper configuration of addressing, communication parameters, and controller compatibility. Firmware flash compatibility must be confirmed when replacing modules with different series revisions.\u003c\/p\u003e\n\u003cp\u003eThe module supports PLC-5 network expansion without changing the existing processor instruction structure, allowing Ethernet communication access through the PLC-5 controller environment.\u003c\/p\u003e\n\u003ch3\u003eOrdering Information\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e1 x Allen-Bradley 1785-ENET Ethernet Interface Module\u003c\/li\u003e\n\u003cli\u003e1 x Factory-installed communication interface assembly\u003c\/li\u003e\n\u003cli\u003e1 x Compatible mounting hardware assembly if supplied with the module configuration\u003c\/li\u003e\n\u003cli\u003eManuals, programming software, and external Ethernet cables are not included unless specifically listed\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eField Installation Guidelines\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003ePower and Chassis Preparation\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eDisconnect power from the 1771 I\/O chassis before installation.\u003c\/li\u003e\n\u003cli\u003eConfirm PLC-5 processor compatibility with the module series and revision.\u003c\/li\u003e\n\u003cli\u003eInspect the backplane connector condition before mounting.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eCommunication Wiring\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eUse shielded Ethernet cabling suitable for the industrial environment.\u003c\/li\u003e\n\u003cli\u003eMaintain separation between communication wiring and high-voltage power conductors.\u003c\/li\u003e\n\u003cli\u003eConnect the RJ45 port securely and verify link status indicators after startup.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eModule Installation\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eAlign the module with the PLC-5 chassis slot connector.\u003c\/li\u003e\n\u003cli\u003eSecure the module using the appropriate mounting hardware.\u003c\/li\u003e\n\u003cli\u003eRestore system power and verify Ethernet communication activity.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eIs the 1785-ENET compatible with all PLC-5 processors?\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe module compatibility depends on the PLC-5 processor family and firmware revision. Verify series and revision requirements before installation.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eDoes the 1785-ENET require external power?\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eNo. The module receives operating power from the PLC-5 backplane at 5 VDC.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eWhat Ethernet communication protocol does the module support?\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe module supports Ethernet TCP\/IP communication through an 8-pin RJ45 connector.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eWhat Ethernet speed is supported by the 1785-ENET?\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe module supports 10 Mbps and 100 Mbps Ethernet operation with auto-negotiation capability.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eCan the 1785-ENET be hot-swapped during operation?\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eHot insertion is not specified. Power should be removed before removing or installing the communication module.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eWhat is the backplane current requirement?\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe module requires approximately 1.0 A from the PLC-5 backplane at 5 VDC.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eDoes the module provide PLC-5 processor communication expansion?\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eYes. It provides Ethernet communication expansion through direct connection with PLC-5 controller systems.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eWhat installation factor affects Ethernet communication performance?\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eProper grounding, cable routing, network configuration, and connector installation affect communication stability.\u003c\/p\u003e","brand":"Allen-Bradley","offers":[{"title":"Default Title","offer_id":46066450989229,"sku":"1785-ENET","price":88.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0733\/1613\/9181\/files\/1785-enet_1.jpg?v=1785855001","url":"https:\/\/www.maxwellplc.com\/products\/allen-bradley-plc-5-1785-enet-ethernet-interface-module","provider":"Maxwell PLC Ltd","version":"1.0","type":"link"}