Model Number Explanation

• AS: Modicon Automation System component

• 884A: Compact 884A CPU series

• 201: High‑memory variant with 3.5K user logic, single Modbus port, RIO support, 115/230V AC power

Technical Specifications

• CPU: 8086 main processor + dual 8051 front‑end processors

• User Logic Memory: 3.5K words

• Register Memory: 1K words

• Max I/O Capacity: 256 discrete input/output points

• Power Supply: 115/230V AC, 50/60 Hz

• Communication: Single Modbus RTU port (RS‑232/485); RIO network capable

• Programming Interface: P190 (programming/diagnostics)

• Operating Temperature: 0°C to +60°C

• Storage Temperature: −40°C to +85°C

• Humidity: 5%–95% non‑condensing

• Dimensions: ≈267 × 89 × 216 mm

• Weight: ≈2.0 kg

• Certifications: CE, UL 508, CSA

Interface & Configuration

• Backplane Connection: Modicon 800/984 series rack connector

• Communication Port: Modbus RTU (RS‑232/485, standard)

• Expansion Slots: Supports optional communication/I/O expansion cards

• Mounting: Rack‑mount compatible with Modicon 800/984 series racks

Key Features

• 3.5K High Memory: Supports larger control programs, data logging, and complex algorithms

• Remote I/O (RIO): Built‑in RIO communication for distributed I/O architectures

• High‑Speed Processing: 8086 + dual 8051 architecture for fast logic execution

• Built‑in Diagnostics: Power‑up self‑tests, real‑time fault monitoring, and LED status indicators (PWR/RUN/FAULT)

• Memory Protection Switch: Prevents accidental program overwrites

• Legacy Compatibility: Native fit for Modicon 984/884 series racks and I/O modules

Applications

• Systems: Schneider Modicon 984, 884 series PLC systems

• Industries: Manufacturing, process automation, power generation, water treatment, material handling

• Use Cases: Complex machine control, large production lines, distributed I/O systems, legacy system upgrades requiring extra memory

Compatibility

• I/O Racks: Modicon 800 series I/O racks, 984 series backplanes

• I/O Modules: Modicon 800/984 series digital/analog I/O modules

• Software: Compatible with Modicon Concept, ProWORX 32 programming software

Differences from AS-884A-101 / 111

• AS-884A-101: 2K memory, single Modbus port

• AS-884A-111: 2K memory, dual Modbus ports

• AS-884A-201: 3.5K memory, single Modbus port (highest memory in 884A series)