OMRON C200H-CPU03-E (24VDC) Unitate CPU

C200H-CPU03-E: CPU unit for C200H series, 24 VDC powered variant. C200H-CPU01-E is the AC-powered version. Both share identical hardware except for power-supply terminals. Acest model este întrerupt; only used-second-hand units are available on the market.

Specificații electrice de bază

Definiția terminalului (Side 24 VDC Terminal Block)

24VDC: Positive DC24V input

0V: DC negative

LG: Noise filter ground

GR: Pământ protector (must connect to protective ground)

⚠️: Never connect AC220V; this will destroy the CPU immediately. Terminal assignments differ from AC-powered C200H-CPU01-E; power supplies cannot be interchanged.

System Requirements

1. Must be used with C200H-series backplanes (C200H-BC□□1); cannot run standalone.
2. 24 VDC is fed directly into the CPU unit; no separate power-supply unit is required.
3. Până la 3 expansion I/O racks are supported.
4. Programming software: CX-Programmer, HostLink communication cable.

Panel LED Indicators

RUN: Run status

ALARMA: Minor alarm

ERROR: Defecțiune hardware

OUT INHIBIT: Output inhibit

Practical Second-hand Unit Inspection Checklist

1. Verificare vizuală: No cracked housing, no burnt terminals, intact internal fuse.
2. Power-on test: Apply 24 VDC, observe LED status; no hardware fault alarms.
3. Test de comunicare: Establish HostLink connection with CX-Programmer; program upload/download functional.
4. Battery check: Internal lithium battery; program stored in RAM will be lost upon battery depletion. Use EPROM memory cassette for program retention.
5. Backplane 5 V load test: Mount a small set of I/O modules and verify no 5 V overload alarms.

Înlocuire & Migration Options

1. Înlocuire directă: No pin-to-pin compatible CPU available. The entire C200H series is discontinued.
2. Recommended upgrade target: CJ2M-CPU31 / CJ2H series.

Existing backplanes and I/O modules cannot be reused; full hardware replacement is required.

CX-Programmer supports project conversion, but I/O addresses and memory mapping differ; program modification and commissioning are mandatory.

Application Scenarios for OMRON C200H-CPU03-E (24VDC)

Poziționare: Modular mid-range PLC, max. 2048 I/O points, 16 000-step program memory, 24 VDC supply. Suited for cabinets with only DC24V and no AC220V. Întrerupt, large installed base of legacy equipment remains in operation.

Puncte forte: Rich module portfolio, built-in RS232/422-485, supports PID, poziționare, temperature control and DeviceNet. Compatible with HMIs and SCADA hosts. DC-powered variant fits mobile/mounted equipment and DC-fed control cabinets.

1. Stand-alone Machinery (Largest Installed Base)
2. Mașini de ambalare

Mâncare & cosmetic packaging lines: umplere, etanșare, labelling, bottle sorting and conveyor systems. Pressure/temperature analogue acquisition, multi-station interlocking logic, serial-link connection to HMIs and supervisory hosts.

2. Machine-tool & Grinder Retrofits

Retrofit of legacy imported machine tools: thread grinders and special-purpose processing machines. Control of cylinders, electrovalve, inverters and encoders; automatic machining cycles, wheel dressing and multi-sequence logic.

3. Cauciuc & Plastics Equipment

Auxiliary injection-moulding equipment, extruders and rubber vulcanisers. C200H-TC temperature-control modules for closed-loop PID temperature regulation; analogue pressure acquisition; sequential control of heating elements and hydraulic valve banks.

4. Transmiterea & Handling Equipment

Material-handling conveyors, sorting lines and palletising auxiliaries. Positioning modules for station indexing, part-presence detection and multi-section conveyor interlock protection.

2. Medium-sized Production Lines
3. Automotive-component Production Lines

Component assembly stations and test fixtures. Digital I/O for clamps and actuators; analogue acquisition of pressure and displacement; DeviceNet fieldbus for connection to robots and sensors. Multi-rack I/O expansion for high-point-count requirements.

2. Light-industry & Electronics Assembly Lines

Test fixtures and assembly conveyors. Heavy discrete-logic processing, simple analogue signal acquisition. HostLink serial connection to host computers for production counting and alarm logging.

3. Process-oriented Control (Temperatură, Presiune, Flux)
4. Small-scale Chemical & Water-treatment Equipment

Dosing systems and compact water-treatment plants. AD/DA modules for flow-rate and liquid-level acquisition; PID closed-loop valve regulation and interlock alarm logic.

Nota: Not intended for large-scale DCS applications; for compact-process equipment only.

2. Cuptoare & Thermal-processing Furnaces

Multi-loop temperature control, multi-segment ramp-soak thermal profiles, sequence start-stop and over-temperature interlock protection.

4. Special 24 VDC-fed Applications (Unique Strength of CPU03-E)

C200H-CPU03-E accepts direct 24 VDC input, unlike AC-powered CPU01-E. Well-suited for:

1. Mobil / Vehicle-mounted Control Cabinets: System powered entirely by 24 VDC without AC220V supply.
2. Rezistent la explozie / Safety-rated Cabinets: Full-DC24V device layout minimises high-voltage wiring.
3. Outdoor-installed Control Cabinets: Powered by DC power supplies, avoiding AC-input-related failure modes.
4. Building-related Equipment
5. Large HVAC Units: Control of fans, water valves and heat sources; RS485 link to building-management hosts.
6. Legacy elevator auxiliaries and material lifts.
7. Networking Applications

HostLink: Communication with HMIs and host computers.

Add-on communication units: DeviceNet fieldbus for remote I/O and inverters.

Serial-to-Ethernet adapters for integration into SCADA supervisory systems in legacy projects.

⚠️ Selection & Note de întreținere

1. Discontinued product; do not specify for new projects. Only for spare-part replacement on existing assets.
2. Never apply AC220V to C200H-CPU03-E; permanent CPU damage will occur.
3. Internal lithium battery; RAM-resident program is lost upon battery failure. Fit C200H-MP831 memory cassette for critical equipment.
4. Maximum expansion: CPU plus 3 expansion racks (max. 2048 I/O). Observe back-plane 5 A power budget; do not overload with excessive modules.

Programming Software for OMRON C200H-CPU03 (24VDC)

Legacy mid-range C-series PLC. Sysmac Studio does NOT support this model. Sysmac Studio targets only NJ/NX-series modern controllers.

1. Mainstream Maintenance Software (Field-proven)

CX-Programmer (bundled within CX-One software suite)

Supported versions: V7, V8, V9. V9.6 offers best compatibility for C200H. Newer CX-One releases drop C200H hardware-library support.

La crearea unui nou proiect, select hardware type: C200H-CPU03.

Caracteristici: Ladder-diagram & instruction-list editing, program upload/download, online monitoring, DM-area access and fault-alarm reading.

⚠️ On Win10/Win11, run CX-P V9 under Windows XP compatibility mode. Prefer physical COM ports. For USB-to-serial adapters, use stable CH340 / PL2303 chipsets.

2. Original Vintage Software (Legacy Windows-98/XP era)

Syswin 3.4 / 4.0 (SYSMAC-CPT)

Factory-delivered software for C200H. Runs only on Windows 98 / XP. Not usable on modern PCs. Only for legacy-program archival; not for regular maintenance.

📌 Communication Notes for C200H-CPU03

DB25 RS232C HostLink port on CPU side. CQM1-CIF02 cable must not be used; physical fit does not guarantee functional compatibility.

1. Original cable: XW2Z-200S-V (DB25-to-DB9, 2 m), direct connection between CPU DB25 and PC serial port.
2. Modern-day debugging: USB-RS232 (DB9) adapter plus DB9-DB25 null-modem cross-cable.
3. Default serial-port parameters: 9600 bps, 7 data-bits, even-parity, 2 stop-bits.
4. Hand-held Programmer

Model: C200H-PR027. Portable field-programming unit for reading/writing programs without a PC.

Version Recommendation

1. Pentru intretinere & backup of legacy systems: CX-Programmer V9.6 (CX-One V4.3).
2. On Win10/Win11: Avoid CX-One V4.5 or later. These releases remove C200H hardware definitions; C200H-CPU03 cannot be selected in new projects.

C200H-CPU03 - CX-Programmer HostLink Communication-failure Troubleshooting Checklist

Protocol: SYSMAC WAY (HostLink). Default parameters: 9600 bps, 7-bit, even-parity, 2-stop-bits, unit-address 0.

Cable requirement: Null-modem cross-cable. Original part-number XW2Z-200S-V (DB25-DB9). Straight-through cables will not work.

⚠️ Do not use CQM1-CIF02. Though the connector fits, mismatched timing can damage the CPU serial port.

1. Hardware & Wiring Checks (60 % of field faults originate here)
2. PLC Power-supply Validation

For C200H-CPU03-E: Confirm stable 19.2-28.8 VDC supply, POWER LED steady-on, no back-plane 5 V overload alarms.

2. Cable Inspection

Must be cross-wired: DB25 (PLC) ↔ DB9 (PC), TX-RX signal crossover.

Prefer FTDI-chipset USB-to-serial adapters. Some CH340 revisions show poor compatibility with the old 7-E-2 serial protocol.

Never hot-swap the DB25 connector; hot-plugging frequently destroys the on-board RS232 transceiver.

Verify continuity with multimeter. Connect cable-shield at one end only.

3. COM-port Validation

Check Windows Device-Manager for COM-port number. Keep COM-port number ≤ 9. Confirm no other software (serial-port terminal, HMI software) occupies the selected COM-port.

2. CPU-unit DIP-switch Settings (under CPU cover)

C200H-CPU03 DIP-switch:

SW1-5: OFF(0) → use CPU-built-in RS232 HostLink. If set ON, port switches to Toolbus hand-programmer mode and HostLink communication will fail.

Leave all other DIP-switches at factory OFF position. No PLC power-cycle required after DIP-switch modification.

3. CX-Programmer Software Configuration (Critical Steps)
4. Recommended software release: V9.6. CX-One V4.5+ removes C200H hardware library definitions.
5. Project creation: Manually select C200H-CPU03. Do not rely on automatic online scanning.
6. Communication-setup parameters:

Network type: SYSMAC WAY (not Toolbus).

Select the correct PC COM-port.

Serial parameters: 9600 bps, 7 data-bits, Even-parity, 2 stop-bits, unit-no. 0 (factory-default).

4. Win10/Win11 operational tips

Right-click CX-Programmer → Properties → Compatibility; enable Windows XP (SP3) compatibility mode.

Run CX-Programmer as administrator. Disable firewall / antivirus serial-port interception.

Automatic online detection often mis-identifies the unit as CQM1. Best practice: Specify PLC model offline before attempting connection. Do not enable automatic-upload-on-connect.

4. Layered Fault-isolation Procedure (Follow sequence)

1) Serial-port Hardware Self-test

Disconnect PLC. Short-circuit PC-side DB9 pin-2 and pin-3. Open serial-port terminal software. Transmitted characters should echo back. Echo confirms PC-side serial-hardware works. No echo indicates defective adapter or cable.

2) PLC-side Symptom-based Diagnosis

5. Common Pitfalls
6. ❌ Using straight-through DB25-DB9 cable: Mechanical continuity exists, but TX-RX are not crossed → no communication.
7. ❌ DIP-switch SW1-5 set ON: Toolbus-programmer mode, HostLink disabled.
8. ❌ COM-port number > 9: Old CX-Programmer versions cannot enumerate higher-numbered COM-ports.
9. ❌ Installing CX-One V4.5 or newer: C200H hardware library removed; C200H-CPU03 cannot be selected.
10. ❌ Hot-plugging DB25 connector: Destroys internal RS232 driver without visible external damage.
11. Emergency Debugging Alternatives
12. If DB25 RS232 is damaged: Use CPU-on-board RS-422/485 HostLink together with RS485-to-RS232 converter.
13. Hand-held programmer C200H-PR027: PC-independent read/write for verifying CPU integrity.