GENERAL
This document describes the general specifications
of the FCN autonomous controller with NFCP501/
NFCP502 CPU module. (FCN is an acronym for field
control node.)
Notation in this document:
• The term “FCN” refers to the module consisting type
autonomous controllers.
• The term “FCN-500” refers to the autonomous
controllers with NFCP501/NFCP502 CPU module.
For Function, refer to FCN Autonomous Controller
Functions (FCN-500), GS 34P02Q03-01E.
FEATURES
• High-performance, high-reliability modular controller
• Memory with ECC
• Low heat dissipation eliminates the need for a fan
• A wealth of RAS features — CPU self-diagnostics, temperature monitoring, I/O diagnostics, and more
• The CPU, power supply module, internal communication bus on backboard (SB bus), E2 bus (extension bus), and
control network (Ethernet port 1 and 2) can all be duplexed, and all modules are hot-swappable. Use a couple of the
CPU module of the same type to make the CPU module duplex configuration.
• Can function as link active schedulers (LASs) for low-speed voltage mode (H1) FOUNDATION Fieldbus segments,
and link up FOUNDATION Fieldbus-enabled field devices.
CONFIGURATION
An FCN-500 consists of the following:
• Base module
• Power supply module
• CPU module
• E2 bus interface module (extending the unit) (*1)
• SB bus repeat module (extending the SB bus to connect an extension unit) (*1)
• I/O modules
*1: SB bus repeat module and E2 bus interface module can not be used together.
There are four types of base module.
- NFBU200 base module (long): Control unit and extension unit sharing,
duplexed power supply possibility
- N2BU051 base module (short): Control unit and extension unit sharing
- NFBU050 base module (short): Control unit only, for low power
- N2BU030 base module (compact): Control unit and extension unit sharing
Control unit alone
The control unit is unit with CPU module. The maximum number of I/O modules that can be implemented depends on
the type of base module and the number of CPUs.
Maximum I/O Module Configurations
Base Module Unit Configuration Standard Duplexed (*1)
