FUJI NP1PM-256H CPU Module

This high-performance CPU module serves as the main processor for MICREX-SX PLC systems. The FUJI NP1PM-256H executes complex ladder logic and structured text programs with exceptional speed. A 32-bit RISC processor handles all control algorithms and communication tasks seamlessly. Consequently, automation engineers can manage large-scale applications with thousands of I/O points efficiently.

Technical Specifications of the CPU Module

The FUJI NP1PM-256H measures 113.6 mm in width and 90 mm in height. Its depth reaches 76 mm for standard MICREX-SX rack mounting. The module weighs approximately 0.34 kg including all processing and memory circuitry. A single front panel LED array shows run status, fault conditions, and communication activity. The front side features an RS-232 port for programming and two expansion connectors. This design stores minimal energy in small decoupling capacitors only. Therefore, the module contains no batteries for program retention.

Parameter	Specification
Brand	Fuji Electric
Full Model	NP1PM-256H
Category	CPU Module
Dimensions (W x H x D)	113.6 mm x 90 mm x 76 mm
Weight	Approximately 0.34 kg
Processor	32-bit RISC
User Program Memory	256 KB (ladder and structured text)
Execution Speed	0.01 µs per basic instruction
Data Memory	64 KB
Discrete I/O Capacity	8192 points
Analog I/O Capacity	1024 points
Timers/Counters	4096 each
Communication Port	RS-232 (programming/HMI)
Expansion Ports	2 x high-speed backplane
Energy Storage	Minimal (decoupling only)
Supply Voltage	5V DC from backplane
Backup Method	Flash memory (no battery)

Functional Features and Processing Power

The FUJI NP1PM-256H executes up to 256,000 steps of user code with 0.01 µs per instruction. You can mix ladder logic and structured text within the same program seamlessly. The module supports real-time multitasking for up to 32 independent control loops. Built-in diagnostics report program errors and system faults through the RS-232 port. Consequently, this CPU handles demanding applications like motion control and batch processing with ease.

Installation and System Integration

You must install this CPU module into the first slot of a MICREX-SX rack. The FUJI NP1PM-256H communicates with I/O modules through the high-speed backplane. An RS-232 cable connects the module to a programming PC or operator panel. The module automatically recognizes all configured I/O racks upon power-up. Always verify program compatibility before replacing an existing CPU unit.

Maintenance and Operational Benefits

Because the FUJI NP1PM-256H stores user programs in Flash memory, it needs no battery changes. Technicians can safely remove power without losing the program or data memory. The module retains all logic and configuration parameters indefinitely after programming. Consequently, maintenance becomes simpler and more reliable than older battery-dependent designs.