Description

Yokogawa NFCP501-W05 S1 CPU Module

Configured for real-time control program execution in FCN-500 controller network processing, the Yokogawa NFCP501-W05 S1 (NFCP501) CPU module provides direct physical/electrical execution within STARDOM FCN-500 platforms.

The unit operates as the central execution core for sequence logic, task scheduling, and network communication handling in a distributed controller architecture. Processing is performed through an embedded Intel Atom E3815 CPU with ECC-protected memory subsystems and dual Ethernet interfaces for deterministic controller-to-controller and controller-to-I/O data exchange.

Suffix Breakdown & Model Matrix

• NFCP501: Base CPU module series for FCN-500 platform
• W: Extended function variant for expanded software and application compatibility
• 0: Standard performance grade configuration
• 5: Non-explosion-protected hardware variant
• S1: Hardware revision level (Style 1)

Hardware Specifications

Parameter	Specification
ModelBrand	Yokogawa NFCP501-W05 S1
Origin	Japan (Yokogawa Electric Corporation)
Weight	Approx. 0.3 kg
Dimensions	2.2 cm x 12.4 cm x 12.6 cm
OperatingTemp	0 degC to 55 degC
PowerConsumption	Not specified in source data
Processor	Intel Atom E3815, 1.46 GHz
Main Memory	256 MB ECC RAM
Flash Memory	1 GB on-board
NVRAM	2 MB ECC, battery-backed
Network Interface	2 x Ethernet 10/100/1000BASE-T
Serial Interface	1 x RS-232-C (0.3 to 115.2 kbps)
Storage	SDHC slot, 4 GB to 32 GB support
Task Capacity	Up to 16 tasks, 16 priority levels
Execution Cycle	Minimum 5 ms task cycle

Process Control Communication Integrity Layer

The NFCP501-W05 S1 implements dual-channel Ethernet routing with deterministic frame handling for controller synchronization within STARDOM FCN-500 architectures. In Yokogawa process control environments, embedded communication stacks support structured data exchange across supervisory and field-level nodes using redundant network paths. Channel-to-channel isolation logic is applied at board level to minimize cross-interference between CPU execution bus and external network interfaces. ECC-protected memory arrays maintain instruction integrity under transient electrical disturbance conditions.

Frequently Asked Questions

Q: Can the NFCP501-W05 S1 operate in redundant CPU configuration?
A: Yes. The module supports duplex CPU configuration with automatic failover. In redundant mode, internal synchronization ensures state transfer consistency between primary and standby modules.

Q: Does the RS-232-C interface remain available in redundant mode?
A: No. The serial interface is disabled when the module is configured in duplex redundant architecture.

Q: What is the effect of ECC memory on runtime execution?
A: ECC memory corrects single-bit errors in real time, preventing instruction corruption during task execution cycles without halting CPU operation.

Field Installation Guidelines

Install the module in an FCN-500 compatible rack slot with direct backplane engagement. Ensure power is fully isolated before insertion or removal. Ethernet cabling must maintain standard twisted-pair shielding with proper grounding at cabinet entry point. Avoid routing RS-232-C lines parallel to high-voltage or inverter-driven motor cables to reduce electromagnetic coupling. In redundant configurations, verify identical firmware revisions across CPU pairs before synchronization initialization.

Specifications

• Brand: Yokogawa

Advantages

• High reliability in industrial environments
• Supports continuous operation
• Compatible with major PLC/DCS systems