Schneider ASJ890001 Remote I/O Processor Module for Modicon Series 8000

The Schneider ASJ890001 manages remote I/O communication for Modicon Series 8000 PLC systems. You can install this module directly into any standard rack slot. It exchanges data between the main CPU and distributed I/O stations. This processor reduces field wiring costs in large automation installations.

Technical Specifications and Hardware Layout

The Schneider ASJ890001 measures 254 mm in height. Its width reaches 48 mm, and the depth equals 178 mm. The Schneider ASJ890001 weighs approximately 0.60 kilograms. A single internal PCB holds all communication and processing circuits. The module contains no energy storage capacitors or batteries. One 9-pin D-sub connector provides the remote I/O bus interface. A 48-pin edge connector interfaces directly with the Series 8000 backplane. Four status LEDs indicate power, communication, and fault conditions.

Communication Performance and Capacity

The Schneider ASJ890001 supports a maximum baud rate of 1 Mbit/s. It handles up to 64 remote I/O stations on a single bus segment. This processor transfers 128 bytes of input and 128 bytes of output data per scan. Consequently, it supports large distributed I/O networks effectively. Automatic station addressing simplifies the initial commissioning process. Galvanic isolation separates the fieldbus side from the backplane logic. The processor scans all connected I/O within 10 milliseconds.

Installation and Diagnostic Features

You must insert the Schneider ASJ890001 into any standard Series 8000 rack slot. Transitioning to wiring, use shielded twisted-pair cables for optimal noise immunity. The module includes built-in termination resistors for end-of-line configuration. Four front LEDs show bus communication status, power, and module health. A watchdog timer resets the communication after 500 ms of inactivity. The operating temperature range spans from 0°C to 60°C reliably.