OMRON CS1G-CPU44H CS1 Series Programmable Logic Controller CPU Unit

The OMRON CS1G-CPU44H is a high-performance central processing unit designed for the CS1 series of programmable logic controllers. This CPU unit delivers exceptional processing power and memory capacity for medium to large-scale industrial automation applications requiring fast execution, extensive I/O management, and advanced control capabilities. The CS1G-CPU44H is part of Omron's CS1 platform, which bridges the gap between high-performance machine control and highly reliable process control.

Memory and Processing Specifications

The CS1G-CPU44H provides a substantial program capacity of 30K steps, offering ample space for complex logic sequences, function blocks, and structured programs. The data memory configuration includes 64K words total, comprising 32K words of DM (Data Memory) and 32K words of EM (Extended Memory) across one bank. This memory architecture supports sophisticated data handling, recipe management, and data logging applications without external storage devices.

The CPU unit executes basic instructions with high speed, ensuring rapid response to real-time events and minimizing scan times even with large I/O configurations. The processor supports both high-speed counters and pulse outputs for motion control applications when used with appropriate I/O units. The built-in clock function enables time-stamped data logging and scheduled operations.

I/O Capacity and Expansion

The CS1G-CPU44H supports a maximum I/O capacity of 1,280 points when configured with expansion racks. The system accommodates up to three expansion racks, allowing flexible system growth as application requirements evolve. The CPU Rack accepts CS1W-BC series backplanes, and CS1W-BI expansion racks support long-distance configurations for distributed system layouts. The unit is compatible with CS1 Special I/O Units, including analog input/output modules, temperature control units, positioning modules, and high-speed counter units. The CPU cannot mount C200H series expansion I/O racks, ensuring proper system design with dedicated CS1 architecture components.

The analog input capabilities of the CS1 system when paired with compatible units support signal ranges including 4 to 20 mA, 0 to 10 V, 0 to 5 V, and 1 to 5 V, with conversion speeds of 250 ms per 8 inputs. Built-in scaling functions convert raw analog data directly into engineering units at the I/O unit level, eliminating the need for ladder logic scaling routines and simplifying programming.

Communication and Configuration

The CS1G-CPU44H provides built-in serial communication ports supporting host link, no-protocol, and protocol macro communications. These ports enable connection to HMIs, programming devices, printers, and other serial equipment. The CPU supports both peripheral bus and RS-232C connectivity, offering flexibility for various programming and monitoring configurations. The unit is compatible with Omron's CX-Programmer software, providing a comprehensive development environment compliant with IEC 61131-3 programming languages including ladder diagrams, structured text, and sequential function charts.

Reliability and Standards Compliance

The CS1G-CPU44H operates on a 5V system current consumption of 0.39A, ensuring efficient power usage within the rack system. The CPU unit complies with international standards including UC1, N, L, and CE certifications, facilitating global deployment. The operating temperature range from 0 to 55°C and humidity tolerance of 10% to 90% non-condensing ensure reliable performance in typical industrial environments. The unit features diagnostic LEDs for power, run, error, and communication status, enabling quick troubleshooting and system health assessment.

The CS1G-CPU44H is suitable for applications ranging from high-performance machine control to highly reliable process control. Its combination of substantial memory, flexible expansion, and robust construction makes it an excellent choice for machine builders and system integrators requiring a dependable CPU for complex automation systems. The unit supports system redundancy configurations when paired with compatible power supply units, enhancing system availability for critical processes.