Implementing 3-Switch XOR Ladder Logic with Internal Bit
Implement a 3-SPST switch XOR light circuit in LogixPro or RSLogix 500 using an internal relay bit. Includes truth tables, boolean equations, and verified.
Designed for seamless physical integration alongside 15-inch control interfaces, the Beckhoff C9900-E701 provides supplementary tactile control elements for the CP6xxx and CP7xxx Control Panel and Panel PC series. This right-side mounted extension module bridges physical push-button operations with digital control bus networks, offering operators immediate, tactile feedback without utilizing screen real estate. Outfitted with heavy-duty Siemens Signum square 30 x 30 mm push-buttons and an independent Emergency Stop circuit, this assembly supports hybrid wiring structures to balance high-speed bus communication with fail-safe, hardware-interlocked emergency circuits.
| Specification Parameter | Technical Value | ||
|---|---|---|---|
| Manufacturer | Beckhoff Automation | ||
| Model Designation | C9900-E701 | ||
| Compatible Panels | CP6x21-00xx & CP7x21-00xx series (15-inch displays without keyboard) | ||
| Mounting Configuration | Right-side mounting relative to display face | ||
| Operator Elements | 12 x push-buttons (Siemens Signum, 30 x 30 mm) with integrated signal lamps | ||
| Primary Contact Path | Secondary Contact Path | 2nd Normally Open (NO) contact wired directly to physical terminal block row | |
| Signal Lamp Control | Transmitted exclusively via CP-Link or USB interface | ||
| Emergency Stop Element | 1 x Siemens Signum twist-to-release E-stop button (directly wireable) | ||
| Shipping Weight | 5.0 kg (11.0 lbs) | ||
| Package Dimensions (Calculated) | 450 x 200 x 150 mm (17.7 x 7.9 x 5.9 in) |
| Interface Type | Connection Route & Signal Behavior |
|---|---|
| CP-Link / USB Bus Connection | Transmits State 1 NO contact from each of the 12 buttons. Provides execution signals directly to the individual button feedback LEDs. |
| Direct Terminal Row | Bypasses the communication controller, permitting dedicated copper wire connections for State 2 NO contacts. Useful for hardwired hardware safety feedback. |
| E-Stop Terminals | Dedicated direct-wire connection blocks on the rear panel. Complete physical segregation from the digital CP-Link or USB communication logic. |
The C9900-E701 is designed specifically for Beckhoff 15-inch display form factors without built-in keyboards. Integrating this extension with a model containing a physical keyboard is not mechanically possible due to spatial structural interference. When swapping panels during machine service phases, ensure that the communication bus setup (CP-Link versus direct USB) matches the control unit's existing interface cards, as logic mapping on the host Industrial PC will change accordingly.
A common issue in field installations is routing safety-critical Emergency Stop signals through the USB or CP-Link bus rather than hardwiring them. Software-driven button monitoring is not rated for functional safety (SIL/PL) compliance. The red Emergency Stop mushroom cap must be direct-wired using copper connections through the dedicated rear terminal row to a certified safety controller or safety monitoring relay.
To protect the serial signaling over CP-Link/USB from electromagnetic interference, ensure that the connection cable running from the control panel to the main cabinet is fully shielded and routed separately from high-voltage motor cables or variable frequency drive (VFD) lines. In high-vibration environments, use strain reliefs at the direct terminal block row to prevent lead fatigue on the auxiliary NO contacts.
Isolate all electrical supply voltages to the Control Panel and terminal row circuits before starting mechanical mounting. Verify that all safety circuits are completely de-energized. Hardwired Emergency Stop lines must be validated for loop resistance and correct physical logic execution before restoring system operation.
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Designed for seamless physical integration alongside 15-inch control interfaces, the Beckhoff C9900-E701 provides supplementary tactile control elements for the CP6xxx and CP7xxx Control Panel and Panel PC series. This right-side mounted extension module bridges physical push-button operations with digital control bus networks, offering operators immediate, tactile feedback without utilizing screen real estate. Outfitted with heavy-duty Siemens Signum square 30 x 30 mm push-buttons and an independent Emergency Stop circuit, this assembly supports hybrid wiring structures to balance high-speed bus communication with fail-safe, hardware-interlocked emergency circuits.
| Specification Parameter | Technical Value | ||
|---|---|---|---|
| Manufacturer | Beckhoff Automation | ||
| Model Designation | C9900-E701 | ||
| Compatible Panels | CP6x21-00xx & CP7x21-00xx series (15-inch displays without keyboard) | ||
| Mounting Configuration | Right-side mounting relative to display face | ||
| Operator Elements | 12 x push-buttons (Siemens Signum, 30 x 30 mm) with integrated signal lamps | ||
| Primary Contact Path | Secondary Contact Path | 2nd Normally Open (NO) contact wired directly to physical terminal block row | |
| Signal Lamp Control | Transmitted exclusively via CP-Link or USB interface | ||
| Emergency Stop Element | 1 x Siemens Signum twist-to-release E-stop button (directly wireable) | ||
| Shipping Weight | 5.0 kg (11.0 lbs) | ||
| Package Dimensions (Calculated) | 450 x 200 x 150 mm (17.7 x 7.9 x 5.9 in) |
| Interface Type | Connection Route & Signal Behavior |
|---|---|
| CP-Link / USB Bus Connection | Transmits State 1 NO contact from each of the 12 buttons. Provides execution signals directly to the individual button feedback LEDs. |
| Direct Terminal Row | Bypasses the communication controller, permitting dedicated copper wire connections for State 2 NO contacts. Useful for hardwired hardware safety feedback. |
| E-Stop Terminals | Dedicated direct-wire connection blocks on the rear panel. Complete physical segregation from the digital CP-Link or USB communication logic. |
The C9900-E701 is designed specifically for Beckhoff 15-inch display form factors without built-in keyboards. Integrating this extension with a model containing a physical keyboard is not mechanically possible due to spatial structural interference. When swapping panels during machine service phases, ensure that the communication bus setup (CP-Link versus direct USB) matches the control unit's existing interface cards, as logic mapping on the host Industrial PC will change accordingly.
A common issue in field installations is routing safety-critical Emergency Stop signals through the USB or CP-Link bus rather than hardwiring them. Software-driven button monitoring is not rated for functional safety (SIL/PL) compliance. The red Emergency Stop mushroom cap must be direct-wired using copper connections through the dedicated rear terminal row to a certified safety controller or safety monitoring relay.
To protect the serial signaling over CP-Link/USB from electromagnetic interference, ensure that the connection cable running from the control panel to the main cabinet is fully shielded and routed separately from high-voltage motor cables or variable frequency drive (VFD) lines. In high-vibration environments, use strain reliefs at the direct terminal block row to prevent lead fatigue on the auxiliary NO contacts.
Isolate all electrical supply voltages to the Control Panel and terminal row circuits before starting mechanical mounting. Verify that all safety circuits are completely de-energized. Hardwired Emergency Stop lines must be validated for loop resistance and correct physical logic execution before restoring system operation.
Global Express Shipping
Returns & Warranty
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| Country of origin |
Germany
|