NEC FC-9801X Industrial Computer

Macro assembly program Ver5.1A: Used for interrupt service programs or hardware initialization code with extremely strict time requirements.

Japanese PC-FORTRAN: For scientific computing and engineering simulation, numerical simulation and real-time control can be completed on the same machine.

6.3 Communication and Network

Terminal simulation: Supports multiple IBM host simulation protocols such as ETOS52G, 3740B, 3770S, as well as 3270S Japanese emulator (supporting graphics). The file transfer function enables FC-9801X to function as a remote workstation for large hosts.

LAN: Through components such as BRANCH4680II/4670II, a LAN can be built to achieve data sharing and distributed control among multiple FC-9800 series devices.

6.4 Rich software assets

Due to the high market share of the PC-9800 series in the Japanese market, there are numerous third-party software available, including real-time operating systems, advanced compilers, SCADA/HMI software packages, PLC programming tools, and more. FC-9801X can directly utilize these resources, and users do not need to develop all programs from scratch.

Typical application scenarios

Based on the above technical characteristics, FC-9801X has played a key role in multiple industrial fields:

The upper computer of the monitoring/control system: In the factory automation production line, FC-9801X serves as the central monitoring station, connecting multiple PLCs, robot controllers, and barcode readers to collect production data and issue scheduling instructions. Its RAS function and rack installation characteristics allow it to be placed in noisy and dusty production workshops without compromising reliability.

Operator Console (Embedded Use): Integrate FC-9801X into the operator console of large equipment such as printing machines, injection molding machines, and testing benches, serving as the upper computer for human-machine interface and motion controller. The compact keyboard and dust cover make it suitable for environments where operators frequently interact.

Remote unmanned station data acquisition device: using RAM files as a storage medium without mechanical movement, combined with remote I/O unit FC-9814 and modem, it can operate continuously for a long time in unmanned places such as pump stations, meteorological stations, and substations in remote areas. Once the communication line is interrupted, the local RAM file can cache data for hours to days, and upload it after the line is restored.

Laboratory Automation and Testing System: In the R&D department or quality inspection laboratory, FC-9801X is connected to oscilloscopes, signal sources, and data recorders through GPIB or A/D cards to automatically execute test sequences and generate reports. The PC-UX/V operating system allows multiple researchers to log in and use it simultaneously, improving the utilization of expensive instruments.

Brother model: FC-9801V2

In addition to FC-9801X, NEC also offers the FC-9801V2 model, which can be seen as a compact supplement to the X series. V2 is equipped with a built-in cooling fan, further expanding the working temperature range; The power supply has a stronger ability to suppress voltage fluctuations and external noise. It also supports built-in fixed hard drives, but has fewer overall expansion slots. For scenarios that do not require five expansion slots but require higher environmental tolerance, V2 is an economical choice.

Historical significance and technological heritage

FC-9801X was born during the transition of PC architecture from 16 bit to 32-bit, but it did not simply pursue processor performance. Instead, it systematically addressed the five core requirements of industrial environments for computers: environmental resistance, high reliability, scalability, real-time response, and software compatibility. The concept of its RAS function, which integrates power monitoring, temperature detection, watchdog, and external alarm into a standard platform, has deeply influenced the design of subsequent industrial computers and embedded systems.

Against the backdrop of the PC-9800 series dominating the Japanese market for a long time, the FC-9801X has successfully introduced the software ecosystem of commercial PCs into the industrial field, enabling users to build professional control systems using inexpensive universal development tools without relying on expensive dedicated workstations. This model was later widely used for reference by global industrial computer manufacturers.

Even today, when we examine modern industrial PCs such as functional safety systems for SIL2/SIL3, rugged laptops, and fanless embedded computers, we can still see the continuation of the FC-9801X's design philosophy: modular expansion, wide temperature operation, vibration and dust resistance, remote management, and rich I/O interfaces. It is not just a product, but also a milestone in the field of industrial computing.

FC-9801X

FC-9801V2

FC-9853 (14 inch color monitor)

FC-9801-VNet (keyboard)

FC-9812K (I/O expansion unit)

FC-9813 (File Expansion Unit)

FC-9814 (Remote I/O Unit)

FC-9814-01 (Additional Unit)

FC-9815-02 (Link Connector)