Yokogawa NFCP501-W15 S2 FCN-500 CPU Module
Extended-function FCN-500 CPU module with two Ethernet ports, wider-temperature hardware and Style S2 identification.
Product Overview
NFCP501-W15 S2 identifies a Yokogawa NFCP501 CPU module for the FCN-500 autonomous controller. The order code NFCP501-W15 specifies the extended-function portfolio, wider-temperature version and standard non-explosion hardware, while S2 records the CPU hardware style.
The module runs a real-time operating system, supports IEC 61131-3 control languages and provides the processor, memory and communication resources for an FCN-500 control unit. It occupies two slots and can be installed as one CPU or as a matched pair in a duplex CPU configuration.
Product Specifications
| Brand | Yokogawa | Product family | STARDOM FCN-500 |
|---|---|---|---|
| Product type | CPU module with 2 Ethernet ports | Complete identification | NFCP501-W15 S2 |
| Order model | NFCP501-W15 | Hardware style | S2 |
| Processor | Intel Atom E3815, 1.46 GHz | Main memory | 256 MB with ECC |
| Static RAM | 2 MB with ECC, battery backed | On-board flash memory | 1 GB |
| External media | 1 SDHC slot, 4 to 32 GB, Class 10 | Ethernet | 2 × RJ45; 1000/100/10 Mbps |
| Serial interface | 1 × RS-232-C, D-sub 9-pin male | I/O interface | SB bus, duplex |
| Supply voltage | 5 V DC ±5% | Maximum current consumption | 1200 mA |
| Operating temperature class | Wider range, -20°C to +70°C | Dimensions (W × H × D) | 65.8 × 130 × 149.3 mm |
| Weight | 0.9 kg | Occupied width | 2 slots |
Real-Time Control Resources
The CPU combines ECC-protected working memory with retained storage and a real-time task scheduler. These resources define the application boundary independently from the network suffix.
Up to 16 control tasks can be assigned priorities, with execution cycles set in 5 ms increments.
The documented control-application capacity is up to 3 MB.
The data area is up to 8 MB and the retained data area is up to 700 KB.
Main memory and static RAM use ECC; the static RAM is battery backed.
Network, Duplex and E2-Bus Boundaries
Ethernet, serial and internal-bus resources change with the selected system architecture. The external-view drawing shows the two RJ45 ports, serial connector, SD slot and service switches used on NFCP501.
A duplex pair must use the same model, suffix codes and system-software version.
The RS-232-C port is unavailable when the CPU modules are configured for duplex operation.
NFCP501 Style S2 or later is required when the E2 bus interface module is used.
The NFCP501 specification identifies hot-swap support for the CPU module.
Frequently Asked Questions
How should the W15 and S2 markings on NFCP501-W15 S2 be interpreted?
NFCP501-W15 is the order model: W denotes the extended-function portfolio, 1 denotes the wider-temperature version and 5 denotes the standard non-explosion execution. S2 is the documented hardware style, not another order-code suffix.
Can NFCP501-W15 S2 be used in a duplex CPU arrangement?
Yes. Duplex operation is documented, but the two CPUs must match in model, suffix codes and system-software version. Preserve the configured control-unit architecture when replacing one module.
Is the RS-232-C port available when NFCP501-W15 S2 is duplexed?
No. Yokogawa specifies that the serial port cannot be used while the CPU modules are configured for duplex operation.
Which SD media belongs with NFCP501-W15 S2?
The external-media specification is one SDHC slot for 4 to 32 GB Class 10 media. Confirm the application backup and card contents before exchange.
Does the wider-temperature code make every FCN-500 component suitable for -20°C to +70°C?
No. NFCP501-W15 carries the wider-temperature CPU suffix, but the permitted temperature of the assembled controller is limited by the component with the narrowest operating range.
Can NFCP501-W15 S2 be replaced while the FCN-500 is energized?
The NFCP501 specification identifies hot-swap support. Follow the FCN-500 maintenance procedure and preserve the matched hardware and software conditions of a duplex pair.
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