Allen-Bradley 1771-IG: TTL Logic and 5 V Wiring Checks
Check 1771-IG TTL HIGH/LOW logic thresholds, field supply ripple and 1771-WC wiring before replacing an input module.
Manufacturer: BECKHOFF
Product No.: C9900-E708
Country of origin:Germany
Product Type: Push-Button Extensions
Payment: T/T, Western Union
Weight: 500g
Dimensions: drawings with dimensions of the push-button e x tensions as AutoCAD DXF file
Shipping port: Xiamen
Warranty: 12 months
The BECKHOFF C9900-E708 is a right-side push-button extension engineered for integration with CP6xxx and CP7xxx series Control Panels and Panel PCs. Specifically designed to match 15-inch display models without integrated keyboards, this auxiliary interface panel expands physical, tactile operator controls directly on the unit enclosure. It provides a structured arrangement of standard operating elements and an emergency stop switch to support direct machine interaction.
This extension features twelve square Siemens Signum push-buttons, each equipped with an integrated signal lamp, alongside a dedicated Siemens Signum emergency stop key. The C9900-E708 offers dual-transmission architecture: it transmits a single normally-open contact for each push-button via USB or CP-Link, while providing a second, independent normally-open contact wired directly to an internal terminal block. The integrated signal lamps operate exclusively via the digital CP-Link or USB communication channel.
| Parameter | Specification |
|---|---|
| Manufacturer | BECKHOFF Automation |
| Model Number | C9900-E708 |
| Product Type | Push-Button Extension |
| Lifecycle Status | Service Phase |
| Mounting Position | Right side of the control panel |
| Compatible displays | 15-inch Control Panels and Panel PCs without integrated keyboard (e.g., CP6x21-00xx, CP7x21-00xx) |
| Push-Buttons | 12x Siemens Signum square keys, 30 x 30 mm, with integrated signal lamps |
| Emergency Stop | 1x Siemens Signum emergency stop key, directly wireable |
| Labeling Method | Insertable labels for individual push-button caps |
| Push-Button Transmission (Primary) | Transmitted via CP-Link or USB (single normally-open contact) |
| Push-Button Transmission (Secondary) | Directly wireable via terminal row (second normally-open contact) |
| Signal Lamp Transmission | Controlled exclusively via CP-Link or USB |
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Returns & Warranty

Global Express Shipping
Returns & Warranty
Orders are processed and delivered Monday-Friday (excluding public holidays).
For full eligibility, restocking fees, and international return details, please view our official Refund & Return Policy .
| Country of origin |
Germany
|