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.
The BECKHOFF CX2040-0120 is a high-performance Embedded PC basic CPU module belonging to the CX2000 series. Equipped with an Intel Core i7 quad-core processor, this module is engineered to handle intensive industrial control, visualization, and motion control applications. It provides the core processing intelligence for complex automation tasks within a compact, DIN-rail-mounted form factor.
This CPU module features rich onboard connectivity, including two independent Gigabit Ethernet interfaces, four USB 2.0 ports, and a DVI-I port for display connections. Storage and operating system deployment are managed via a CFast card slot, while persistent data is secured using an integrated 128 kB NOVRAM. The system dynamically interfaces with field I/O systems through a power supply module, offering automatic recognition of both E-bus (EtherCAT Terminals) and K-bus (Bus Terminals).
| Parameter | Specification |
|---|---|
| Manufacturer | BECKHOFF |
| Model | CX2040-0120 |
| Processor | Intel Core i7 2715QE 2.1 GHz (4 cores) |
| Main Memory | 4 GB DDR3 RAM (non-expandable) |
| Flash Memory | 20 GB or 40 GB CFast card slot (extendable) |
| Persistent Memory | 128 kB NOVRAM integrated |
| Interfaces | 2 x RJ45 (10/100/1000 Mbit/s), 1 x DVI-I, 4 x USB 2.0, 1 x optional interface slot |
| Cooling Type | Integrated ball-bearing fan with speed monitoring |
| System Clock | Internal battery-backed real-time clock (exchangeable battery) |
| Operating System | Windows Embedded Standard 7 P |
| TwinCAT Platform Level | High Performance (70) |
| I/O Connection | Via power supply module (automatic recognition of E-bus / K-bus) |
| Supply Voltage | 24 V DC (-15% / +20%) |
| Max. Power Consumption | 32 W |
| Dimensions (W x H x D) | 144 mm x 99 mm x 91 mm |
| Weight | Approx. 1230 g |
| Protection Class | IP20 |
| Operating Temperature | -25 to +60 degC |
| Storage Temperature | -40 to +85 degC |
| Relative Humidity | 95%, non-condensing |
| Approvals | CE, UL |
When replacing a BECKHOFF CX2040-0120, ensure that the CFast storage card is backed up or transferred to the replacement unit to preserve system configurations, licenses, and program execution files. Verify that the twin power supply module is operational and configured to match the E-bus or K-bus mapping of your existing system architecture.
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Returns & Warranty

The BECKHOFF CX2040-0120 is a high-performance Embedded PC basic CPU module belonging to the CX2000 series. Equipped with an Intel Core i7 quad-core processor, this module is engineered to handle intensive industrial control, visualization, and motion control applications. It provides the core processing intelligence for complex automation tasks within a compact, DIN-rail-mounted form factor.
This CPU module features rich onboard connectivity, including two independent Gigabit Ethernet interfaces, four USB 2.0 ports, and a DVI-I port for display connections. Storage and operating system deployment are managed via a CFast card slot, while persistent data is secured using an integrated 128 kB NOVRAM. The system dynamically interfaces with field I/O systems through a power supply module, offering automatic recognition of both E-bus (EtherCAT Terminals) and K-bus (Bus Terminals).
| Parameter | Specification |
|---|---|
| Manufacturer | BECKHOFF |
| Model | CX2040-0120 |
| Processor | Intel Core i7 2715QE 2.1 GHz (4 cores) |
| Main Memory | 4 GB DDR3 RAM (non-expandable) |
| Flash Memory | 20 GB or 40 GB CFast card slot (extendable) |
| Persistent Memory | 128 kB NOVRAM integrated |
| Interfaces | 2 x RJ45 (10/100/1000 Mbit/s), 1 x DVI-I, 4 x USB 2.0, 1 x optional interface slot |
| Cooling Type | Integrated ball-bearing fan with speed monitoring |
| System Clock | Internal battery-backed real-time clock (exchangeable battery) |
| Operating System | Windows Embedded Standard 7 P |
| TwinCAT Platform Level | High Performance (70) |
| I/O Connection | Via power supply module (automatic recognition of E-bus / K-bus) |
| Supply Voltage | 24 V DC (-15% / +20%) |
| Max. Power Consumption | 32 W |
| Dimensions (W x H x D) | 144 mm x 99 mm x 91 mm |
| Weight | Approx. 1230 g |
| Protection Class | IP20 |
| Operating Temperature | -25 to +60 degC |
| Storage Temperature | -40 to +85 degC |
| Relative Humidity | 95%, non-condensing |
| Approvals | CE, UL |
When replacing a BECKHOFF CX2040-0120, ensure that the CFast storage card is backed up or transferred to the replacement unit to preserve system configurations, licenses, and program execution files. Verify that the twin power supply module is operational and configured to match the E-bus or K-bus mapping of your existing system architecture.
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
|