{"product_id":"beckhoff-c9900-e781-push-button-extension","title":"BECKHOFF C9900-E781 Push-Button Extension","description":"\u003ch3\u003eDescription\u003c\/h3\u003e\n\u003cp\u003eEngineered as a robust hardware expansion, the \u003cstrong\u003eBeckhoff C9900-E781\u003c\/strong\u003e push-button extension provides direct tactile operator controls for CP6xxx and CP7xxx Series Control Panels and Panel PCs. This module is specifically optimized for integration below 15-inch displays without integrated keyboards, enhancing operator interface efficiency in demanding industrial environments.\u003c\/p\u003e\n\n\u003cp\u003eThe unit features 16 square push-button keys equipped with individual signal lamps, allowing clear status feedback for machine functions. For safety-critical operations, a dedicated emergency stop key is integrated directly into the faceplate. Communication and control of the push-buttons and indicator lights are managed over a high-speed USB interface, while auxiliary terminal rows allow for direct hardwiring of critical signals to ensure system-wide redundancy and safety compliance.\u003c\/p\u003e\n\n\u003ch3\u003eFeatures\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTactile Control Elements:\u003c\/strong\u003e Equipped with 16 square push-button keys (30 x 30 mm, Siemens Signum type) featuring integrated signal lamps and customizable insert labels for individual marking.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eIntegrated Safety:\u003c\/strong\u003e Features a single, highly visible Siemens Signum emergency stop key designed for direct external wiring.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDual Connection Path:\u003c\/strong\u003e All 16 push-buttons are transmitted over USB via a normally-open (NO) contact, and also feature a second NO contact routed directly to an integrated terminal row for optional hardwired control.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eUSB Control:\u003c\/strong\u003e Indicator lamps and the onboard Gray code switch are controlled exclusively via the USB interface.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOnboard Selection Switch:\u003c\/strong\u003e Includes one 23-position Gray code switch for machine mode selection or parameter adjustment.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eExternal Connectivity:\u003c\/strong\u003e Front-mounted 2-port USB Type-A interface sealed with an IP65 screw cap for direct maintenance access.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eApplications\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eCNC machine tools and machining centers\u003c\/li\u003e\n  \u003cli\u003eAutomated assembly and production lines\u003c\/li\u003e\n  \u003cli\u003eHeavy industrial control workstations using Beckhoff CP6xxx and CP7xxx panels\u003c\/li\u003e\n  \u003cli\u003eProcess control systems requiring physical emergency stops and mode selectors\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003ctable\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n      \u003cstrong\u003eParameter\u003c\/strong\u003e\n      \u003cstrong\u003eSpecification\u003c\/strong\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eManufacturer\u003c\/td\u003e\n      \u003ctd\u003eBeckhoff Automation\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003ePart Number \/ Model\u003c\/td\u003e\n      \u003ctd\u003eC9900-E781\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eCompatible Displays\u003c\/td\u003e\n      \u003ctd\u003e15-inch displays without keyboard (CP6xxx and CP7xxx series)\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003ePush-Buttons\u003c\/td\u003e\n      \u003ctd\u003e16 x Siemens Signum square (30 x 30 mm) with signal lamps\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eEmergency Stop\u003c\/td\u003e\n      \u003ctd\u003e1 x Siemens Signum, directly wireable\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eSelector Switch\u003c\/td\u003e\n      \u003ctd\u003e1 x Gray code switch, 23 positions (USB controlled)\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eControl Interfaces\u003c\/td\u003e\n      \u003ctd\u003eUSB (for push-buttons, indicator lights, and Gray code switch)\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eHardwired Interfaces\u003c\/td\u003e\n      \u003ctd\u003eTerminal row (second NO contact for all push-buttons, direct E-stop wiring)\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eFront Interfaces\u003c\/td\u003e\n      \u003ctd\u003e2 x USB 2.0 Type-A with IP65 screw cap\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eMounting Location\u003c\/td\u003e\n      \u003ctd\u003eBelow the Control Panel \/ Panel PC\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eApproximate Weight\u003c\/td\u003e\n      \u003ctd\u003e5.0 kg\u003c\/td\u003e\n    \u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eConnections and Interfaces\u003c\/h3\u003e\n\u003ctable\u003e\n  \u003cthead\u003e\n    \u003ctr\u003e\n      \u003cth\u003eInterface Type\u003c\/th\u003e\n      \u003cth\u003eFunction and Configuration\u003c\/th\u003e\n    \u003c\/tr\u003e\n  \u003c\/thead\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eInternal USB Connection\u003c\/td\u003e\n      \u003ctd\u003eTransmits first NO contact of 16 push-buttons, Gray code switch state, and drives all indicator lamps.\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eTerminal Block Row\u003c\/td\u003e\n      \u003ctd\u003eProvides direct hardwired access to the second NO contact of each of the 16 push-buttons.\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eEmergency Stop Terminals\u003c\/td\u003e\n      \u003ctd\u003eDedicated terminals for hardwiring safety relays or fail-safe PLC inputs.\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eFront USB Ports\u003c\/td\u003e\n      \u003ctd\u003eDual-port pass-through USB A connection protected by an IP65 screw cap.\u003c\/td\u003e\n    \u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eInstallation Guidelines\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMechanical Mounting:\u003c\/strong\u003e Secure the push-button extension directly to the bottom of the compatible 15-inch Beckhoff Control Panel using the standard mounting brackets and screws. Ensure gaskets are seated properly to maintain the rated ingress protection.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eGrounding:\u003c\/strong\u003e Connect the functional earth terminal of the push-button housing directly to the central low-impedance grounding point of the control cabinet.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWiring Safety:\u003c\/strong\u003e Route the emergency stop wiring separate from high-voltage AC cables to minimize electromagnetic interference. Direct-wire the E-stop to an approved safety evaluation relay or safety PLC input.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eUSB Cable Routing:\u003c\/strong\u003e Ensure the internal USB control cable is routed without sharp bends and away from moving components or heat sources.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"BECKHOFF","offers":[{"title":"Default Title","offer_id":53106444894571,"sku":"C9900-E781","price":100.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0953\/3227\/0443\/files\/c9900-e781-o4pxt0ttmkd.png?v=1776243597","url":"https:\/\/www.plcprotech.com\/fa\/products\/beckhoff-c9900-e781-push-button-extension","provider":"PLC ProTech Ltd.","version":"1.0","type":"link"}