MODICON PC-M984-230 PLC CPU Module

Technical Specifications

Model: PC-M984-230 Brand: MODICON(AEG/Schneider) Product Type: Compact Series 984 PLC CPU Controller Power Supply: 115/230VAC auto-ranging, 50/60Hz, 1.5A Program Memory: 4K words Communication: Built-in serial port for Modbus / Modsoft programming Backplane Bus: Modicon Compact backplane Mounting: Backplane rack slot mount Operating temperature: 0℃ ~ +60℃ Storage temperature: -20℃ ~ +70℃ Relative humidity: 5%~95%, non-condensing Weight: 1.1kg Dimension: 260mm140mm30mm Protection: IP20

System compatibility

PC-M984-230 belongs to MODICON Compact series CPU module. Compatible with Compact series backplane and all Compact I/O modules. It acts as main processor for small 984 automation racks. Suitable for packaging machinery, conveyor systems, small process skid legacy control system renovation and replacement as industrial spare part.

Function

PC-M984-230 Compact PLC CPU controller. It executes ladder logic programs, scans discrete and analog I/O modules on the Compact backplane, performs arithmetic, timer, counter and basic PID calculations. Serial port supports Modbus communication for connecting HMI and remote devices, and supports program upload/download via Modsoft software. Lithium backup battery retains user program and data when power is lost. Built-in hardware watchdog and self-diagnosis, with run/fault/battery status LEDs. Widely used for standalone machine control in legacy MODICON Compact automation system, serving as reliable CPU spare part.

Installation

Cut off rack AC power before installation. Insert PC-M984-230 CPU module into MODICON Compact backplane slot and lock the card. Check gold finger contact condition. Connect 115/230VAC mains power to terminal block. Download PLC program, verify I/O scanning and Modbus communication before formal operation.

Interface

Backplane bus connector, AC power terminal block, serial communication port, run/fault/battery low status LED indicators for PC-M984-230 MODICON Compact CPU.

Feature

MODICON PC-M984-230 Compact CPU, 4K program memory, auto 115/230VAC input, integrated Modbus serial port, battery memory backup, hardware watchdog, single slot rack design, industrial anti-interference design. This discontinued legacy industrial spare part used for old MODICON Compact PLC rack main control maintenance and replacement.

Diagnostic

CPU no power: check AC input supply, fuse and wiring for PC-M984-230. Fault LED active: inspect program error, memory corruption or low backup battery voltage. Cannot communicate: verify serial cable, baud rate, parity and shielding grounding. I/O modules not detected: check backplane power and module seating. Intermittent runtime crash: check loose backplane connector and component aging.

Product Brief

PC-M984-230 is AEG MODICON Compact series 984 PLC CPU controller. It executes ladder logic, scans I/O modules and handles Modbus serial communication for Compact rack automation systems, classic spare part for legacy MODICON industrial machine control overhaul.

Disclaimer: All parameters are for reference only and shall not be used as the basis for quotation. Goods are scarce, overseas delivery lead time is 3-7 working days. It is only used for equipment maintenance and renovation.