The Yokogawa CP345 Processor Card Module is a central processing unit card used in Yokogawa’s DCS platforms. It provides real‑time control execution, communication handling, and system coordination. Its robust design ensures long‑term reliability in mission‑critical industries such as oil & gas, petrochemical, power generation, and water treatment.
Memory: 2 MB RAM, 2 MB ROM (earlier specs); newer versions up to 128 MB RAM + 128 MB flash
Communication Interfaces: Ethernet, RS‑232, RS‑485; supports Modbus and PROFINET depending on revision
I/O Ports: 2 serial ports, 1 parallel port
I/O Capacity: Up to 1,536 points supported
Operating Temperature: ‑20 °C to +60 °C
Humidity Range: 5%–95% RH (non‑condensing)
Dimensions: Approx. 27 × 25 × 6 cm
Weight: ~0.6 kg
Country of Origin: Japan
Applications
Central CPU for CENTUM CS and CENTUM VP systems
Real‑time control execution in process industries
Integration with distributed I/O networks via Ethernet and serial communication
Mission‑critical automation requiring scalability and redundancy
FAQ
Q: Is CP345 compatible with CENTUM VP? A: Yes, it is widely used in CENTUM VP systems as a processor card module.
Q: What makes CP345 reliable for industrial use? A: It is designed with strong diagnostics, redundancy options, and robust communication protocols to withstand harsh industrial environments.
Q: How does CP345 differ from newer Yokogawa CPUs like CP461 or CP701? A: CP345 is an earlier generation processor card with smaller memory and slower processing speed. CP461 and CP701 offer higher performance, larger I/O capacity, and advanced redundancy features.
