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A3ACPU P21

The A3ACPU P21 is a high-performance CPU module from Mitsubishi's A Series of programmable controllers, designed for demanding industrial automation applications requiring fast processing and large-scale control capabilities.

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Key Features
Processing Performance

Basic instruction execution speed: 0.2μs/step

Program capacity: 28K steps (standard)

Data memory: 64K words

Control Capabilities

Maximum I/O points: 2048 (with expansion)

Supports 1024 timers/counters

Built-in real-time clock for time-based control

Communication Interfaces

RS-232 port for programming and HMI connection

Supports MELSECNET/10 network (via communication modules)

Special Functions

PID control capability

Interrupt processing (up to 128 points)

Floating-point arithmetic operations

Robust Design

Operating temperature: 0°C to 55°C

Vibration resistance: 4.9 m/s²

Compact dimensions: 98(W) × 90(H) × 86(D) mm

Technical Specifications
Parameter Specification
Power Supply 5VDC (from power supply module)
Current Consumption 1.2A (5VDC)
Memory Backup Super capacitor (data retention)
Instruction Set 200+ instructions
Programming Languages Ladder, STL, SFC