Product Description:

The CX5140-155 is an embedded PC module produced by Beckhoff within the CX Embedded PC Systems series. Designed for DIN rail installation, it consolidates the CPU, memory, fieldbus interfaces, and power conditioning needed to run local PLC, motion, and HMI tasks on the factory floor. In an automation cell, it serves as the master controller, executing real-time sequences under the TwinCAT 3 Runtime and coordinating downstream I/O terminals.

Its computing platform centers on an Intel Atom E3845 processor operating at 1.91 GHz with four physical cores, allowing deterministic multitasking of PLC logic and visualization threads. The system carries 4 GB of DDR3 RAM, providing enough capacity to buffer large recipe files and motion tables without swapping. Networking is handled by two RJ45 Gigabit Ethernet ports, which support segmented machine networks or redundant links to higher-level controllers. Local peripherals such as barcode scanners or service laptops connect through four USB 2.0 sockets. A DVI-I interface drives operator panels at up to 1920 × 1200 pixels, allowing detailed process graphics to remain clear. All electronics are housed in a 142 × 100 × 92 mm enclosure and draw only 16 W during normal operation, keeping the cabinet thermal load low. CFast and microSD slots provide removable storage for programs and data.

Power is supplied from a 24 V DC rail, and the internal backplane passes up to 10 A through the power contacts to attached I/O terminals. For an uninterruptible shutdown, an integrated energy pack maintains a one-second UPS with 1 MB of buffered RAM, protecting log files during a mains failure. When this backup circuit is enabled, the PC’s power consumption rises to 23 W. The terminal section can supply 10 W to either E-bus or K-bus couplers, eliminating the need for external feeds.