Product Details:

MODICON M907-000 is a 16K memory board designed for classic Gould Modicon legacy PLC rack systems, also known as AM-M907-000. It serves as the memory expansion unit to store user ladder logic, register data and configuration parameters for the matched Modicon main CPU. This board provides stable non-volatile memory space with battery backup to preserve program and process data when power is disconnected. It plugs directly into the dedicated slot on the Modicon backplane and communicates with the processor through the backplane bus to support program upload, download and online runtime access. The front panel carries simple indicator lights to show memory ready status and fault warning for convenient field inspection. The onboard circuit adopts industrial components with built-in EMC filtering and surge suppression to resist electrical noise and transient spikes in factory environments. As an obsolete original spare part, it is widely used for maintenance and retrofit of aging Modicon automation racks. Direct drop-in replacement keeps the existing CPU program, backplane layout and software configuration unchanged, and avoids rewriting control logic to cut production downtime.

Basic Parameters

Product type: 16K PLC memory expansion board

Full part number: AM-M907-000

Memory capacity: 16K

Compatible system: Gould Modicon legacy rack PLC

Installation: rack slot mount for dedicated Modicon backplane

Data retention: battery backup

Operating temperature: 0°C ~ +60°C

Protection grade: IP20

Supported Functions

User ladder logic program storage

Register and parameter data retention

Backplane high-speed data exchange with CPU

Memory self-diagnosis and fault flag output

Program read and write access for programming software

Internal circuit transient noise and surge protection

Core Functions

Persistent storage of automation control program

Battery-backed data protection during power loss

Onboard LED memory status indication

Backplane bus signal filtering

Diagnostic alarm for memory hardware failure

Synchronous data access for the host processor

Hardware Specifications & Environmental Features

Built-in signal 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Status: Obsolete original part, available for spare replacement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 CPU compatibility, backup battery specification and backplane slot definition before ordering.

This is from our current stock.

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