Tutto sui PLC: la CPU
A practical engineering guide to PLC CPU operation, from deterministic scan cycles and I/O image tables to memory, communications, diagnostics, redundancy, processor sizing, and reliable system...
Designed for seamless physical integration with 15-inch CP6xxx and CP7xxx Control Panels and Panel PCs, the Beckhoff C9900-E818 provides an ergonomic, right-side mounted operator interface. This industrial-grade push-button extension facilitates direct tactile control alongside standard HMI visualization screens, making it ideal for machinery requiring immediate operator intervention.
The unit features 16 integrated push-buttons with signal lamps and a dedicated emergency stop button. To ensure high system reliability and safety compliance, the module utilizes a dual-contact architecture. Primary control signals and lamp states are transmitted digitally via CP-Link or USB, while secondary contacts and safety-critical circuits are routed to a terminal block for direct hardwiring.
| Parameter | Value |
|---|---|
| Manufacturer | Beckhoff |
| Part Number/Model | C9900-E818 |
| Compatible Series | CP6x31-00xx, CP7x31-00xx (15-inch displays) |
| Mounting Location | Right side of Control Panel / Panel PC |
| Push-Button Quantity | 16 x Siemens Signum square (30 x 30 mm) |
| Emergency Stop | 1 x Siemens Signum (directly wireable) |
| Contact Configuration | Dual Normally Open (NO) contacts per push-button |
| Communication Interface | CP-Link or USB (for primary contacts and signal lamps) |
| Hardwiring Interface | Terminal row (for secondary contacts and emergency stop) |
| Shipping Weight | 5 kg |
| Interface / Connection | Function |
|---|---|
| CP-Link / USB Connection | Transmits primary NO contact states and controls all integrated signal lamps. |
| Internal Terminal Row | Provides direct hardwiring access for secondary NO contacts of all 16 push-buttons. |
| Emergency Stop Terminals | Dedicated hardwired terminals for integration into external safety relays or fail-safe controllers. |
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Returns & Warranty

Designed for seamless physical integration with 15-inch CP6xxx and CP7xxx Control Panels and Panel PCs, the Beckhoff C9900-E818 provides an ergonomic, right-side mounted operator interface. This industrial-grade push-button extension facilitates direct tactile control alongside standard HMI visualization screens, making it ideal for machinery requiring immediate operator intervention.
The unit features 16 integrated push-buttons with signal lamps and a dedicated emergency stop button. To ensure high system reliability and safety compliance, the module utilizes a dual-contact architecture. Primary control signals and lamp states are transmitted digitally via CP-Link or USB, while secondary contacts and safety-critical circuits are routed to a terminal block for direct hardwiring.
| Parameter | Value |
|---|---|
| Manufacturer | Beckhoff |
| Part Number/Model | C9900-E818 |
| Compatible Series | CP6x31-00xx, CP7x31-00xx (15-inch displays) |
| Mounting Location | Right side of Control Panel / Panel PC |
| Push-Button Quantity | 16 x Siemens Signum square (30 x 30 mm) |
| Emergency Stop | 1 x Siemens Signum (directly wireable) |
| Contact Configuration | Dual Normally Open (NO) contacts per push-button |
| Communication Interface | CP-Link or USB (for primary contacts and signal lamps) |
| Hardwiring Interface | Terminal row (for secondary contacts and emergency stop) |
| Shipping Weight | 5 kg |
| Interface / Connection | Function |
|---|---|
| CP-Link / USB Connection | Transmits primary NO contact states and controls all integrated signal lamps. |
| Internal Terminal Row | Provides direct hardwiring access for secondary NO contacts of all 16 push-buttons. |
| Emergency Stop Terminals | Dedicated hardwired terminals for integration into external safety relays or fail-safe controllers. |
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
|