What Is SCADA? Supervisory Control Without Replacing the PLC
SCADA sits above PLCs and RTUs: it acquires field data, alarms operators, and issues supervisory commands across plants and remote assets—without replacing local deterministic control.

Engineered for direct mechanical integration with landscape-format multi-touch control devices, the Beckhoff C9900-G057 provides a tactical operator control interface for CP39xx Control Panels as well as CP32xx-1600 and CP37xx-1600 Panel PCs. Mounted horizontally below the main display unit, this heavy-duty expansion module delivers robust physical control elements directly to the machine-level interface. The inclusion of high-integrity physical keys, alongside an integrated emergency stop circuit, ensures high-reliability operator command input and compliance with equipment-level safety architectures.
| Specification | Parameter Value |
|---|---|
| Manufacturer | Beckhoff Automation |
| Model Reference | C9900-G057 |
| Compatible Series | CP39xx Control Panels, CP32xx-1600 / CP37xx-1600 Panel PCs (Landscape) |
| Push-Button Type | RAFI RAFIX 22FS+ round, 30 mm keys with signal lamps |
| Emergency Stop Actuator | 1x RAFI RAFIX 22FS+ with force-guided break contacts |
| Positioning | Horizontal mounting, below the multi-touch panel housing |
| Communication (Push-Buttons) | 1 switch contact via USB, 1 switch contact via 19-pin round connector |
| Communication (Emergency Stop) | Break contacts wired directly via 19-pin round connector |
| Communication (Signal Lamps) | Controlled via USB (Optional: all switch contacts and lamps via 19-pin connector) |
| Main Connection Interface | 19-pin round connector and internal/external USB interfaces |
| Shipping Weight (Calculated) | 9.00 kg |
The C9900-G057 is specifically dimensioned for the landscape-oriented physical configurations of the CP39xx, CP32xx-1600, and CP37xx-1600 form factors. It cannot be retrofitted to portrait variants or older-generation single-touch panels without substantial structural customization and loss of housing IP-integrity. Always verify the physical width matching of your specific monitor model prior to installation.
When utilizing the USB channel for signal lamp status feedback and secondary key switch tracking, ensure your PC operating system is configured to prevent USB selective suspend power-saving modes. If the host operating system puts the USB root hub to sleep, LED indications and non-hardwired key presses will experience communication dropouts. Safety-related emergency stop contacts must remain hardwired directly through the 19-pin interface to your safety controller or safety relay.
To guarantee electromagnetic compatibility, the 19-pin round cable assembly must be fully shielded, with the shield terminated directly to the connector shell. Ensure the panel PC and push-button extension housing are commonly grounded through the mounting arm mechanism. Grounding straps should bridge the physical joint between the extension housing and the multi-touch panel to minimize transient potential differences.
CRITICAL WARNING:
Ensure that all incoming 24V DC auxiliary power systems and host panel power supplies are completely shut down and locked out before initiating mounting or wiring procedures. Contact with live circuits during terminal connection can result in localized component damage or false safety trips.
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| Country of origin |
Germany
|