Omron C200PC-ISA13-SRM-E Modules

Technical Dossier

Product Details And Specifications

Omron C200PC Series Technical Notes

The Omron C200PC series represents a critical segment of Omron's C200H/C200PC programmable controller platform, deployed extensively across global heavy industry including petrochemical refineries, nuclear auxiliary systems, automotive assembly lines, and continuous-process chemical plants. The C200PC-ISA13-SRM-E is a Sysmac Bus Remote I/O master module designed for ISA-bus PC integration, enabling host PC-based supervisory control over distributed C200H remote I/O racks. This architecture was a standard solution for SCADA-integrated DCS environments throughout the 1990s and 2000s and remains operational in numerous legacy installations requiring long-term maintenance support.

The Evolution of C200PC Architecture

The C200PC platform emerged as Omron's response to the demand for PC-integrated industrial control in the early 1990s. It bridged the C200H modular PLC backplane with ISA-bus host computers, allowing engineers to run ladder logic supervision and data acquisition from a single industrial PC. The architecture relied on the Sysmac Bus (also called the Sysmac Link or SRM bus) as its primary communication backbone, operating at defined baud rates over dedicated coaxial or twisted-pair cabling.

Early versions of the C200PC interface cards were limited to single-master configurations. Subsequent revisions introduced multi-drop remote I/O capability, allowing a single ISA card to address multiple remote I/O racks across distances up to several hundred meters. Compatibility constraints are significant: C200PC ISA modules are physically and electrically incompatible with PCI, PCIe, or USB bus architectures. Migration to modern Omron platforms (CJ2, NX, NJ series) requires full hardware replacement and typically a complete I/O remapping exercise. For installations where the host PC hardware is still operational, the C200PC-ISA13-SRM-E remains the only direct replacement option.

C200PC Full Catalog & Functionalities (SKU List)

The following SKUs represent verified, commonly sourced modules within the Omron C200PC and closely integrated C200H platform. Modules are classified by functional category.

SRM / Remote I/O Master Modules (ISA Bus)

• C200PC-ISA13-SRM-E: ISA-bus Sysmac Remote I/O master card, supports up to 32 remote I/O points per rack, C200H compatible.
• C200PC-ISA03-SRM-E: Earlier-revision ISA SRM master, single remote I/O rack addressing, predecessor to ISA13 variant.
• C200PC-ISA23-SRM-E: Extended ISA SRM master with enhanced multi-drop addressing for larger distributed I/O configurations.

CPU / Controller Modules

• C200H-CPU01-E: Base CPU module, 1.2K word program memory, standard I/O bus interface.
• C200H-CPU03-E: Mid-range CPU, 3.2K word program memory, supports Sysmac Link and peripheral port.
• C200H-CPU11-E: Enhanced CPU with expanded data memory, supports host link and peripheral communications.
• C200H-CPU21-E: High-capacity CPU, 7.2K word program memory, extended I/O capacity up to 512 points.
• C200H-CPU31-E: Top-tier C200H CPU, 15.2K word program memory, full Sysmac Bus master capability.

Digital Input (DI) Modules

• C200H-ID212: 16-point DC 24V input module, sink type, standard density I/O card.
• C200H-ID215: 32-point DC 24V input module, high-density, dual-row connector.
• C200H-IA122: 16-point AC 120V input module, for legacy AC field device integration.

Digital Output (DO) Modules

• C200H-OD212: 16-point DC 24V transistor output module, sink type, 0.3A per point.
• C200H-OD215: 32-point DC 24V transistor output module, high-density configuration.
• C200H-OA222: 8-point AC triac output module, for AC load switching applications.

Analog I/O Modules

• C200H-AD003: 4-channel analog input module, 0–10V / 4–20mA selectable, 12-bit resolution.
• C200H-DA003: 2-channel analog output module, 0–10V / 4–20mA, 12-bit resolution.

Communication Modules

• C200H-LK201-V1: Host Link / RS-232C communication module, for SCADA and HMI serial integration.
• C200H-SLK21: Sysmac Link module, coaxial network, peer-to-peer data sharing between C200H nodes.

Quality Control for the C200PC Range

C200PC ISA modules present specific test challenges due to their dual-interface nature: the ISA bus edge connector must be verified for signal integrity across all address, data, and control lines, while the Sysmac Remote I/O port requires functional validation against a live C200H remote I/O rack or a calibrated bus simulator.

DriveKNMS applies the following test protocol to all C200PC-ISA13-SRM-E and related SRM modules: (1) Visual inspection of ISA gold fingers for oxidation, mechanical damage, and pin continuity; (2) ISA bus loopback test using a dedicated ISA test fixture to verify all 98 bus lines; (3) Sysmac SRM communication test — the module is installed in a verified ISA test PC running Omron's C200PC driver software and polled against a reference C200H remote I/O rack to confirm master/slave handshake, I/O data exchange, and error flag behavior; (4) Thermal soak at operating temperature range (0–55°C) for a minimum of 2 hours under active communication load; (5) Final documentation of test results, firmware revision, and hardware revision code issued with each unit.