Specifications

Model: AS‑521P‑111

Manufacturer: Schneider Electric (Modicon)

Series: Modicon 584 / Compact (discontinued)

Function: Level 4 IOP (Input/Output Processor) Board

Input Voltage: 24VDC

Frequency: 50–60 Hz

Connectors: 5 input, 4 external available

Switches: DIP (configuration)

Board Type: Multilayer

Enclosure: Open (no protection rating)

Max Operating Temperature: +40°C

Humidity: ≤65% (non‑condensing)

Weight: ~0.53 kg

Origin: France

Certifications: CE, UL, CSA

Features

Level 4 advanced processing for complex I/O, communication, and data handling.

Dedicated I/O processor reduces main CPU load, improving system response.

24VDC operation with 50/60 Hz compatibility for standard industrial environments.

Configurable via DIP switches for flexible system integration.

Multilayer PCB design for reliability and noise immunity.

Seamless integration with Modicon 584 and Compact backplanes.

Applications

High‑performance PLC systems: Modicon 584 and Compact platforms.

Complex automation: Automotive, process control, and manufacturing lines.

Data‑intensive I/O: High‑speed sensing, communication, and motion control.

Legacy system upgrades: Replacement for aging Level 4 IOP boards in existing installations.

Key Differences from AS‑521P‑001/‑008/‑011/‑106

Not a standard input module – it is a dedicated I/O processor board (IOP), not a 16‑point input card.

Higher functionality (Level 4) for complex tasks vs. basic/high‑speed input only.

Different form factor and connector layout (5 input, 4 external) vs. standard I/O modules。

Lower max temperature (+40°C vs. +60°C) due to advanced processing circuitry。