OMRON C200HE-CPU42 CPU Module

Technical Dossier

Product Details And Specifications

OMRON C200HE Series: Comprehensive Module Range and Technical Overview

The OMRON C200HE series is a member of the SYSMAC C200H programmable controller family, one of the most widely deployed mid-range PLC platforms in global heavy industry. Installations span petrochemical refineries, nuclear auxiliary systems, offshore platforms, pulp and paper mills, and continuous-process chemical plants. The C200HE CPU units—including the C200HE-CPU42—operate as the central processing backbone of rack-based control architectures, executing ladder logic, function block, and structured text programs while managing I/O bus communication across local and remote expansion racks. The platform's long production run (spanning from the early 1990s through the mid-2000s) means that a substantial installed base remains in service under long-term maintenance contracts, making reliable spare part availability a critical operational requirement.

The Evolution of C200HE Architecture

The SYSMAC C200H platform was introduced by OMRON in the late 1980s as a modular, rack-based PLC targeting mid-to-large process control applications. The original C200H CPU units used a proprietary C200H backplane bus operating at parallel I/O scan rates suited to discrete manufacturing. As industrial requirements evolved, OMRON released the enhanced sub-families: C200HE (economy enhanced), C200HG (high-function), and C200HX (extended high-function), all sharing the same physical rack form factor and I/O module ecosystem but differing in program memory capacity, execution speed, and communication port configurations.

The C200HE-CPU42 provides 7.2K words of program memory and supports up to 1,184 I/O points, positioning it as the standard-capacity CPU within the HE sub-family. It communicates via the C200H I/O bus and supports peripheral port connection for programming devices. Compatibility with the broader C200H I/O module library—including analog, high-speed counter, and communication modules—ensures that C200HE CPUs can be integrated into mixed-generation rack assemblies without hardware redesign. The successor platform is the OMRON CJ1/CJ2 series, which uses a different backplane architecture and is not directly backward-compatible, making C200HE spare parts irreplaceable for sites that cannot undertake full system migration.

C200HE Full Catalog & Functionalities (SKU List)

CPU Modules

• C200HE-CPU11: Entry-level CPU, 3.2K words program memory, up to 512 I/O points, peripheral port.
• C200HE-CPU32: Mid-range CPU, 7.2K words program memory, up to 880 I/O points, RS-232C port.
• C200HE-CPU42: Standard CPU, 7.2K words program memory, up to 1,184 I/O points, peripheral + RS-232C ports.
• C200HE-CPU48: Enhanced CPU, expanded data memory, supports SYSMAC LINK and Host Link communications.

Digital Input Modules

• C200H-ID212: 16-point DC 12/24V input module, NPN/PNP selectable, standard rack mount.
• C200H-ID215: 16-point DC 24V input module, high-density, LED status indicators per channel.
• C200H-ID217: 32-point DC 24V input module, compact high-density I/O expansion.
• C200H-IA122: 16-point AC 120V input module, for legacy AC field device interfacing.
• C200H-IA222: 16-point AC 220V input module, industrial AC signal acquisition.

Digital Output Modules

• C200H-OD212: 16-point transistor output module, NPN open-collector, 0.5A per point.
• C200H-OD215: 16-point transistor output module, PNP sourcing type, 0.5A per point.
• C200H-OD218: 32-point transistor output module, high-density discrete output expansion.
• C200H-OA222: 8-point triac output module, AC 250V, for AC load switching applications.
• C200H-OC222: 16-point relay output module, 2A per point, for mixed AC/DC load control.

Analog & Specialty Modules

• C200H-AD003: 4-channel analog input module, 0–10V / 4–20mA, 12-bit resolution.
• C200H-DA003: 2-channel analog output module, 0–10V / 4–20mA, 12-bit resolution.
• C200H-CT001: High-speed counter module, single-phase 50kHz, for encoder and pulse input applications.

Communication & Network Modules

• C200HW-SLK23: SYSMAC LINK module, coaxial network, up to 62 nodes, peer-to-peer data sharing.
• C200HW-COM02: RS-232C communication module, Host Link / No-protocol mode, serial device interfacing.
• C200HW-COM06: RS-422/485 communication module, multi-drop serial network support.

Power Supply Modules

• C200HW-PA204: AC 100–240V power supply, 5VDC 4.6A output, standard rack power unit.
• C200HW-PA204S: AC power supply with service port, 5VDC 4.6A, enhanced diagnostics output.
• C200HW-PD024: DC 24V input power supply, 5VDC 4.6A output, for DC-powered panel installations.

Sourcing Hard-to-Find & Obsolete C200HE Parts

The C200HE series reached end-of-production status, with OMRON having transitioned its mid-range PLC line to the CJ1M and CJ2M platforms. However, the installed base of C200HE systems in continuous-process industries—where full PLC migration requires plant shutdown and extensive re-engineering—remains substantial. DriveKNMS maintains a dedicated inventory of C200HE CPU modules, I/O cards, communication adapters, and power supply units sourced through certified industrial surplus channels and decommissioned plant equipment.

All C200HE units held by DriveKNMS are catalogued by firmware revision and hardware version where applicable. For CPU modules such as the C200HE-CPU42, unit-level testing is performed prior to dispatch to verify program memory integrity, I/O bus communication, and port functionality. Customers operating under long-term maintenance agreements for C200HE-based systems are encouraged to establish buffer stock arrangements to mitigate lead-time risk on critical spare categories.

Quality Control for the C200HE Range

C200HE modules present specific test requirements due to their backplane bus architecture and the age profile of available stock. DriveKNMS applies the following verification procedures to all C200HE units prior to shipment:

• CPU modules (C200HE-CPU42 and variants): Power-on self-test verification, program memory read/write cycle test, peripheral port communication handshake, and I/O bus scan confirmation using a reference rack assembly.
• I/O modules: Channel-by-channel input/output verification using calibrated signal sources and load banks. Optocoupler isolation resistance measurement for input modules.
• Analog modules: Full-scale linearity test across all channels, zero-offset calibration check, and 4–20mA loop integrity verification.
• Communication modules: Protocol handshake test (Host Link, SYSMAC LINK) using OMRON CX-Programmer or equivalent reference device.
• Power supply modules: Output voltage regulation test under rated load, ripple measurement, and over-current protection verification.

All units are shipped with individual test records. Units that do not pass verification are quarantined and not offered for sale.

© 2026 DriveKNMS. All trademarks belong to their respective owners. Specifications are for reference only and subject to change without notice. Verify all parameters against official documentation before installation.