BECKHOFF C9900-E748 CP6xxx CP7xxx Push-button Extension

Description

Integrating physical tactile controls directly alongside industrial visual interfaces, the Beckhoff C9900-E748 provides local machine operator interfaces for compatible 15-inch display configurations. This push-button extension is designed to mount on the right-hand side of CP6xxx and CP7xxx series Control Panels and Panel PCs, specifically matching models without integrated hardware keyboards. By adding functional hardware controls to industrial HMI terminals, the assembly provides immediate tactile responses for critical machine commands without occupying display screen space.

The unit features 16 Siemens Signum square push-button keys, each measuring 30 x 30 mm and featuring an integrated signal lamp. Customizable slip-in labels allow operators to mark each push-button with application-specific symbols or text. For safety-critical stopping procedures, a dedicated Siemens Signum emergency stop pushbutton is located directly on the faceplate, engineered to support physical, independent safety circuits.

Communication architectures on the module utilize twin connection profiles. Button state transmissions are processed digitally over a CP-Link or USB bus interface utilizing a primary normally-open (NO) contact logic. For redundant signals or localized hardwiring, a terminal row allows all 16 push-buttons to be integrated physically using a second, independent normally-open (NO) contact. Commands to illuminate the integrated signal lamps are transmitted exclusively through the digital CP-Link or USB communication interface.

Features

• Right-side mounting design matched with 15-inch display form factors
• Equipped with 16 Siemens Signum square push-buttons (30 x 30 mm)
• Integrated, high-visibility Siemens Signum emergency stop button
• Customizable label templates for physical push-button identification
• Dual-path contact logic: primary status over bus protocol, secondary status wireable through local physical terminal block
• Signal lamps driven directly via CP-Link or USB bus

Applications

• Automotive assembly line operator terminals
• Machine tool human-machine interface (HMI) integration
• Process control systems utilizing CP6xxx/CP7xxx series panels
• Packaging machinery station control panels

Technical Specifications

Connections and Interfaces

Installation Guidelines

• Ensure all electrical power is completely disconnected from the parent Control Panel or Panel PC before beginning mechanical mounting.
• Carefully align the right-side extension module with the mounting points on the frame of the 15-inch display unit.
• Route the USB or CP-Link communication cable internally, taking care not to pinch wires during final assembly housing closure.
• Connect safety-rated cabling directly to the emergency stop block in accordance with local safety performance standards.
• Validate electrical continuity on all secondary hardwired contacts at the terminal block before energizing the control bus.