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The CP701 is the primary central processing module for the Yokogawa CENTUM CS 1000 Distributed Control System (DCS). Designed as a “Basic System” model, the CP701 provides cost-effective and reliable logic execution...
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The CP701 is the primary central processing module for the Yokogawa CENTUM CS 1000 Distributed Control System (DCS). Designed as a “Basic System” model, the CP701 provides cost-effective and reliable logic execution for small to medium-scale industrial processes. It utilizes the R4300 microprocessor architecture, which was one of the earliest CPUs integrated into Yokogawa’s control system lineup, delivering a balance between low power consumption and 75 MHz internal processing speed.
To ensure mission-critical reliability, the CP701 includes Error-Correction Code (ECC) memory, which automatically detects and corrects bit errors to prevent system crashes during continuous plant operation. Its modular design allows installation in Field Control Stations (FCS) for managing I/O processing, PID control loops, and sequence logic execution.
| Parameter | Specification |
|---|---|
| Model Identification | CP701 |
| Microprocessor | R4300 MPU |
| Internal Clock Speed | 75 MHz |
| External Bus Clock | 25 MHz |
| Main Memory Capacity | 8 MB (Basic System Model) |
| Data Integrity | ECC memory error correction |
| Addressing Capabilities | Integrated MMU for secure data partitioning |
| System Platform | CENTUM CS 1000 |
| Power Dissipation | Optimized for fanless natural convection |
| Weight | 0.3 kg |
Memory Architecture — The CP701 is fixed at 8 MB memory as a basic system model. The CP703 is available for applications requiring 16 MB memory capacity.
Write Protection — Provides hardware-level write protection to prevent unauthorized memory writes.
Redundancy Support — Supports dual-redundant configurations when paired with another CP701 module on a compatible baseplate.
Can the CP701 be upgraded to 16 MB of memory?
No. The CP701 is hardware-fixed at 8 MB. For larger memory requirements, the CP703 Enhanced System Model should be used.
Is the CP701 compatible with CENTUM VP?
No. The CP701 is designed for CENTUM CS 1000 systems. For CENTUM VP, newer processors such as the CP461 or CP471 series are typically required.
