Product Details:

MODICON AS-9584-000, also known as PC-0984-381, is a mid-range rack-mounted CPU controller of the classic Modicon 984 family, originally released under AEG Modicon. It serves as the core processing unit for the automation rack, equipped with 16K user logic memory and 2K register memory for ladder logic execution, arithmetic operation, interlock control and closed-loop process regulation. This processor carries dual built-in Modbus serial ports for connecting programming terminals, HMI and SCADA host systems, and supports S908 remote I/O bus expansion to build distributed I/O architecture. It adopts dedicated rack mounting for Modicon 984 backplane and can work with matched power supply, local I/O modules and remote I/O drops. Front panel LED indicators display run status, communication activity and fault alarms for quick field inspection and troubleshooting. Industrial-grade circuitry with built-in surge suppression and EMC filtering guarantees stable continuous operation under heavy electromagnetic interference on factory floors. It relies on backup battery to retain user program and register data after power failure, and it is compatible with Modsoft programming software. As an obsolete original spare part, it is reserved for maintenance and retrofit of legacy Modicon 984 automation systems. Direct drop-in replacement keeps the existing control program, remote I/O layout and serial communication configuration unchanged, avoiding large-scale system reconstruction and cutting production downtime.

Basic Parameters

Product type: Modicon 984 series main CPU programmable controller

Alternative part number: PC-0984-381

Memory: 16K user logic, 2K register

Communication: dual Modbus serial ports, support S908 RIO expansion

Programming tool: Modsoft

Installation: rack mount for Modicon 984 dedicated backplane

Operating temperature: 0°C ~ +60°C

Protection grade: IP20

Supported Functions

Ladder logic program scanning and execution

Local and remote I/O data acquisition and output

Dual-channel Modbus RTU master and slave communication

S908 remote I/O bus management

Program upload, download and online monitoring

Battery-backed retention of register and program data

Core Functions

Real-time logic solving and sequence control

Onboard multi-status LED indication for run and fault

Serial port transient surge suppression

Modbus data frame verification and retransmission

Diagnostic flag storage for processor and bus faults

Synchronous data exchange with backplane and remote racks

Hardware Specifications & Environmental Features

Built-in noise filtering and surge suppression circuit

Storage temperature: -25°C ~ +70°C

Relative humidity: 5% to 95% non-condensing

Status: Obsolete original part, available for spare replacement

Industry Applications:Applied in legacy petrochemical distributed control, old paper making production automation, water treatment remote signal collection and large conveyor remote I/O control racks.

Note:Confirm backplane compatibility, backup battery condition and Modbus wiring definition before ordering.

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