OMRON C200H Modules C200H-ID217

Technical Dossier

Product Details And Specifications

OMRON C200H Series Technical Notes

The OMRON C200H is a modular programmable logic controller platform that achieved widespread deployment across global heavy industry from the mid-1980s through the 2000s. Installations span petrochemical refineries, chemical processing plants, nuclear auxiliary systems, pulp and paper mills, and automotive assembly lines. The C200H backplane architecture supports mixed I/O and specialty module configurations, making it a long-lived platform for both greenfield installations and legacy maintenance programs. Its rack-based design — supporting up to 10 I/O slots per CPU rack — enabled scalable configurations from small standalone cells to distributed multi-rack systems. Despite its end-of-production status, the C200H remains active in thousands of facilities where full DCS migration is deferred due to cost, process continuity requirements, or regulatory constraints.

The Evolution of C200H Architecture

The C200H platform was introduced by OMRON in the mid-1980s as a successor to the C200 series, incorporating an enhanced backplane bus, expanded I/O addressing, and support for intelligent modules. The original CPU units — C200H-CPU01-E and C200H-CPU03-E — used a proprietary instruction set with ladder diagram programming via SYSMAC Support Software. By the early 1990s, OMRON introduced the C200HS as a transitional upgrade, followed by the C200HX/HG/HE family in the mid-1990s, which extended memory capacity, added floating-point arithmetic, and introduced FINS (Factory Interface Network Service) communication natively. The C200H I/O modules maintained backward compatibility across these generations, allowing existing field wiring to be retained during CPU upgrades. The platform entered its end-of-life phase progressively from 2005 onward, with OMRON officially discontinuing manufacturing of most C200H modules by 2010–2015. Replacement pathways include migration to the CJ2 and NX series, though direct module-for-module substitution requires I/O mapping and program conversion. For facilities maintaining original C200H hardware, sourcing verified used and refurbished modules from specialist distributors is the primary lifecycle extension strategy.

C200H Full Catalog & Functionalities (SKU List)

The following SKUs represent verified, commonly deployed modules within the C200H platform. Modules are classified by functional category.

Digital Input Modules (DI)

• C200H-ID217: 32-point DC input module, 24 VDC, NPN sink, 0.1 A per point, high-density rack mount.
• C200H-ID212: 16-point DC input module, 24 VDC, NPN sink, standard density, screw terminal.
• C200H-ID215: 32-point DC input module, 24 VDC, PNP source type, for European field wiring conventions.
• C200H-ID501: 8-point AC input module, 100–120 VAC, isolated commons, for legacy AC field devices.

Digital Output Modules (DO)

• C200H-OD212: 16-point transistor output module, NPN open-collector, 24 VDC, 0.3 A per point.
• C200H-OD215: 32-point transistor output module, PNP source, 24 VDC, high-density.
• C200H-OD218: 32-point transistor output module, NPN sink, 24 VDC, 0.1 A per point.
• C200H-OA222: 8-point triac output module, 100–240 VAC, 0.5 A per point, for AC load switching.
• C200H-OC225: 16-point relay output module, 250 VAC / 24 VDC, 2 A per point, Form A contacts.

Analog Modules (AI/AO)

• C200H-AD003: 4-channel analog input module, 0–10 V / 4–20 mA selectable, 12-bit resolution.
• C200H-AD004: 8-channel analog input module, 1–5 V / 4–20 mA, 12-bit, for process instrumentation loops.
• C200H-DA003: 2-channel analog output module, 0–10 V / 4–20 mA, 12-bit, for control valve positioners.
• C200H-DA004: 4-channel analog output module, 1–5 V / 4–20 mA, 12-bit resolution.

CPU Modules

• C200H-CPU01-E: Base CPU unit, 2.5 K word program memory, supports up to 512 I/O points.
• C200H-CPU03-E: Enhanced CPU, 3.1 K word program memory, extended data memory, faster scan cycle.
• C200H-CPU11-E: High-function CPU with 7.2 K word program memory and expanded I/O capacity to 1,024 points.

Communication & Specialty Modules

• C200H-LK201-V1: SYSMAC LINK module for peer-to-peer network communication between C200H racks.
• C200H-ASC11: ASCII/BASIC module for serial communication and custom protocol handling.
• C200H-CT001-V1: High-speed counter module, 50 kHz, for encoder and pulse input applications.

Power Supply Modules

• C200H-PS221: 100–120 VAC input power supply, 5 VDC / 3.6 A output for CPU and I/O rack.
• C200H-PS211: 200–240 VAC input power supply, 5 VDC / 3.6 A, standard rack power supply.

Quality Control for the C200H Range

C200H modules present specific test challenges due to their backplane bus architecture and mixed-voltage I/O designs. DriveKNMS applies the following verification procedures to all C200H units prior to dispatch:

• Backplane connector inspection: pin straightness, oxidation, and contact resistance measurement on all edge connectors.
• Functional rack test: each module is installed in a live C200H test rack and cycled through its full I/O point map using a dedicated test program.
• Digital I/O verification: all input points are stimulated at rated voltage; all output points are loaded and switching waveforms are verified.
• Analog module calibration check: AD and DA modules are tested against a calibrated reference source; offset and gain errors are recorded.
• CPU module memory test: full program memory read/write cycle, data memory retention test, and watchdog timer function verification.
• Communication module loopback test: SYSMAC LINK and ASC modules are tested for frame transmission and reception integrity.
• Visual inspection: PCB for corrosion, capacitor condition, relay contact wear, and component damage.