Omron C200H-CPU01-E PLC Module C200HCPU01E C2OOH-CPUO1-E

Omron C200H-CPU01-E | SYSMAC C200H Series PLC CPU Module — 100–240VAC Power Supply, 5VDC 3A Output, 4K-Word Program Memory, 145-Instruction Set, IP30

Overview

The Omron C200H-CPU01-E is the foundational CPU unit in Omron's SYSMAC C200H programmable controller series — the module that combines the PLC's processing brain with its own AC power supply into a single rack-mountable unit.

This integrated design — power supply and CPU in one module — was characteristic of the C200H architecture: engineers needed only to select the appropriate backplane (3, 5, 8, or 10 slots), mount the CPU01 in the designated CPU position, and add I/O modules, special function units, and communication modules to the remaining slots.

The C200H was Omron's mid-range PLC through the 1980s and into the 1990s, and the -E suffix on the C200H-CPU01-E indicates the European (international) market variant — the version with the full 100–240VAC operating range that accommodates both 120VAC and 230VAC power supplies without requiring different hardware for different regions.

The extended voltage range of 85–132VAC / 170–264VAC gives the module considerable tolerance for supply voltage sag, a practical benefit in industrial environments where voltage quality is not always ideal.

The CPU01's position within the C200H CPU family places it as the entry-level CPU — the most fundamental processing capability in the C200H range. The 4K-word program memory handles straightforward machine sequencing, conveyor logic, and general-purpose control programs.

For applications requiring larger programs, the memory cassette slot provides the expansion path: an EPROM or EEPROM cassette can be inserted to extend program storage, with the EEPROM variant allowing in-field program updates without a UV eraser.

For applications needing more processing power, Omron positioned the C200H-CPU03-E (8K words) and C200H-CPU11-E (32K words) above the CPU01 in the C200H family.

Key Specifications

Integrated Power Supply Architecture

The C200H-CPU01-E's built-in AC power supply is one of the defining features that separated the C200H design from some contemporary PLCs that required separate power supply modules.

Having the supply integrated into the CPU module simplifies the backplane configuration: the engineer installs one module (the CPU01) and all power conversion for the CPU and I/O rack is handled internally.

The 5VDC, 3A output supplies the backplane logic power for all modules installed in the CPU rack and any expansion rack connected via expansion cable.

The 120VA rated consumption reflects the total power drawn from the AC supply under normal operating conditions.

The 5VDC, 2A power fuse protects the DC output rail — if a module causes excessive current draw, the fuse blows rather than allowing the CPU or other modules to be damaged by overcurrent.

Fuse replacement is a maintenance task that restores operation after the fault condition has been identified and corrected.

The extended operating voltage range (85–132VAC / 170–264VAC beyond the rated ranges) is particularly relevant in installations where the local power infrastructure is prone to voltage fluctuations — common in some manufacturing environments where large motor starts, welding equipment, or variable loads affect the supply quality.

The C200H-CPU01-E tolerates these variations and continues operating through transient voltage dips that might affect less tolerant equipment.

I/O Architecture — Backplane, Racks, and Module Selection

The C200H backplane accepts modules in its numbered slots, with the CPU01-E occupying the designated CPU position (usually the leftmost slot). The remaining slots accept:

I/O modules — digital input modules accepting 24VDC, 100VAC, or other signal levels; digital output modules with relay, transistor, or triac outputs; analog I/O modules for voltage and current signals.

Special function modules — high-speed counter modules, position control modules, temperature control modules, and other application-specific function units that extend the CPU's capabilities beyond basic discrete I/O.

Communication modules — Host Link (RS-232C SYSMAC Link to host computers), PC Link (for PLC-to-PLC data sharing), Remote I/O (for extending I/O to remote racks), and SYSMAC NET Link units.

The CPU rack accommodates the installed modules and the CPU01's own power supply output. Two additional expansion racks connect via the C200H-CN series cable, each adding more slots for additional I/O.

This three-rack maximum covers most medium-scale machine control applications within the C200H platform's scope.

Memory Cassette — Expanding Beyond 4K Words

The 4K-word base program memory of the C200H-CPU01-E covers straightforward machine control programs.

When the application requires more — larger programs with extended subroutine libraries, more data registers, or programs approaching 8K words — the memory cassette slot provides the hardware path for expansion.

The EPROM cassette (C200H-MP16K) extends memory to 16K words.

It is factory-programmed or programmed with a UV-erasable device programmer, making it suitable for production deployments where the program is finalised and requires protection from inadvertent modification.

The EPROM cannot be reprogrammed without UV erasure, which makes it appropriate for stable production programs.

The EEPROM cassette (C200H-ME16K) also extends to 16K words but allows electrical reprogramming — the program can be updated in the field using the programming device, without removing the cassette or using UV erasure.

This flexibility makes the EEPROM cassette the preferred choice for installations where the program requires periodic updates, parameter adjustments, or recipe changes during the equipment's operational life.

FAQ

Q1: The C200H-CPU01-E has 4K words of program memory. Is this enough for most C200H applications?

4K words is the entry capacity in the C200H CPU range — adequate for moderately complex machine sequencing programs using ladder logic with timers, counters, comparison instructions, and standard input/output logic.

A typical program for a conveyor with ten stations, eight interlocks, six fault conditions, and basic HMI communication might occupy 1,500–2,500 words, fitting comfortably within 4K. Programs that include extensive data manipulation, large lookup tables, or very long sequential logic chains may outgrow 4K and require either a memory cassette expansion or an upgrade to the C200H-CPU03-E (8K words) or C200H-CPU11-E (32K words).

Q2: Can the C200H-CPU01-E communicate directly with a modern PC running Windows for programming?

The C200H-CPU01-E does not have a built-in RS-232C port on the CPU01 itself — communication to a programming device uses the peripheral port and an appropriate programming console or adapter.

Omron's CX-Programmer software (which superseded the older SYSMAC Support Software) supports C200H series programming and connects via an appropriate RS-232C adapter between the PC and the C200H peripheral port.

A USB-to-RS232C adapter may be needed on modern PCs that lack native RS-232C ports.

Alternatively, Host Link communication modules installed in the backplane provide RS-232C connectivity for SCADA and programming access.

Q3: What is the maximum I/O point count for a C200H system using the CPU01-E?

The total I/O capacity of a C200H system depends on the number and type of I/O modules installed across the CPU rack and up to two expansion racks. Each I/O module contributes 8, 16, or 32 I/O points.

With a maximum of three racks and standard I/O module configurations, a C200H system can typically reach several hundred discrete I/O points.

The exact maximum depends on the specific module selection, backplane sizes, and power supply capacity — the 5VDC, 3A output of the CPU01-E limits the total current consumption of all installed modules.

Systems requiring very large I/O counts would exceed the C200H-CPU01-E's power supply capacity and require careful current budget planning or step up to a higher-powered CPU variant.

Q4: The C200H-CPU01-E has a 2A power fuse. Can it be replaced in the field?

Yes. The 5VDC, 2A power fuse on the C200H-CPU01-E is a replaceable component. If the fuse blows due to an overcurrent event (a module failure, wiring fault, or external short circuit), the fuse must be replaced after the root cause is identified and corrected.

Replacing the fuse without resolving the underlying fault will result in the replacement fuse blowing again immediately.

The correct fuse type is specified in the C200H hardware manual — using an incorrect fuse rating may either provide inadequate protection or cause nuisance trips under normal operating conditions.

Q5: Is the C200H-CPU01-E compatible with Omron's current CJ and NJ series PLCs for data sharing?

The C200H-CPU01-E uses the older SYSMAC Link and Host Link communication protocols that are not directly compatible with Omron's current CJ2 or NJ series without protocol conversion.

For legacy systems where a C200H and a modern Omron CJ/NJ series controller need to exchange data, a serial communication unit with the appropriate Host Link protocol can be installed in the C200H rack, while the modern controller uses its own Ethernet or EtherNet/IP connection — with protocol conversion handled either in software or via a gateway device.

Direct tag-level integration between C200H and modern controllers is not available without this translation layer.