Manufacturer: Omron
Product No.: CQM1H-CPU51
Country of origin:Japan
Product Type: PLC CPU Modules
Payment: T/T, Western Union
Weight: 7000g
Dimensions: 110 mm x 107 mm x 130 mm
Shipping port: Xiamen
Warranty: 12 months
Designed for decentralized machine control and standalone automation architectures, the Omron CQM1H-CPU51 serves as a reliable central processing unit within the legacy CQM1H PLC family. This controller integrates processing capabilities with modular expandability, supporting up to 512 I/O points and hosting two slots for optional inner boards. Standard communication interfaces include an onboard RS-232C port and a dedicated peripheral port, facilitating direct PC-based ladder logic programming and human-machine interface (HMI) integration.
| Parameter | Specification |
|---|---|
| Manufacturer | Omron |
| Model Number | CQM1H-CPU51 |
| Series | CQM1H Series |
| Program Capacity | 7.2K words |
| Data Memory (DM) | 6K words |
| Onboard Communications | 1x RS-232C (D-Sub 9-pin), 1x Peripheral Port |
| Inner Board Slots | 2 Slots |
| Max I/O Points | 512 Points |
| Internal Current Consumption | 950 mA at 5 VDC |
| Mounting Type | 35mm DIN Rail |
| Operating Temperature | 0 to 55 degC |
| Shipping Weight (Calculated) | 0.65 kg |
| Package Dimensions (Calculated) | 110 mm x 107 mm x 130 mm |
| Connector Pin / Terminal | Function / Circuit Assignment |
|---|---|
| RS-232C Pin 1 | FG (Frame Ground) |
| RS-232C Pin 2 | SD (Send Data / TXD) |
| RS-232C Pin 3 | RD (Receive Data / RXD) |
| RS-232C Pin 4 | RS (Request to Send / RTS) |
| RS-232C Pin 5 | CS (Clear to Send / CTS) |
| RS-232C Pin 9 | SG (Signal Ground) |
The CQM1H-CPU51 can serve as a direct replacement or upgrade path for older CQM1-CPU41 or CQM1-CPU45 modules. However, note that while base I/O modules remain physically compatible, user programs must be recompiled in CX-Programmer due to minor architecture differences in memory allocation and standard system instruction structures.
When utilizing both inner board slots, thermal dissipation requirements in enclosed control panels scale up significantly. Maintain at least 20mm of clearance above and below the PLC assembly to prevent localized overheating, which can degrade the service life of internal backup batteries or lead to intermittent memory faults.
For connection to modern programming PCs without legacy DB9 serial ports, utilize a high-quality USB-to-Serial converter (such as the CS1W-CIF31) connected directly to the CQM1-CIF02 cable. Verify the DIP switch settings on the front panel of the CPU (specifically SW5) to ensure it is configured to receive Host Link communications before attempting online verification.
Always completely isolate the system power supply before inserting or removing the CPU unit, inner boards, or expansion modules. Failing to do so can result in electrostatic discharge damage to internal ASIC processors or corruption of the CPU's EEPROM data block.
Global Express Shipping
Returns & Warranty
Global Express Shipping
Returns & Warranty
Orders are processed and delivered Monday-Friday (excluding public holidays).
For full eligibility, restocking fees, and international return details, please view our official Refund & Return Policy .
| Country of origin |
Japan
|
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