Product Details

MODICON MM-PMA1-400 is an advanced alphanumeric operator interface and HMI terminal within the legacy Modicon PanelMate 2000 family. This control panel establishes Modbus serial communication with classic Modicon PLCs including the 984 series to deliver reliable on-site process monitoring and manual operation for industrial automation systems. Equipped with an alphanumeric display and integrated membrane keypad, it allows operators to view live process variables, adjust setpoints, acknowledge active alarms and trigger machine control commands directly on the production floor. It adopts standard cabinet cutout mounting; its sealed front panel achieves dust and splash resistance suitable for ordinary factory environments. All screen layouts, alarm definitions and recipe parameters are saved into built-in non-volatile memory, ensuring configuration data remains intact after power loss. Clear LED indicators on the front panel show power supply status and serial communication activity, helping maintenance staff quickly locate communication failures or hardware defects. Built-in EMI filtering and surge suppression circuits protect the serial communication port against voltage spikes and electromagnetic noise generated by inverters, contactors and heavy power equipment nearby. Users can upload and download HMI project files using dedicated PanelMate configuration software and match register addresses with the host PLC. As an obsolete industrial spare part, this HMI terminal is widely used for replacement and maintenance of aging automation control lines. Direct drop-in replacement retains the existing serial wiring, screen layout and PLC register mapping, reduces reconfiguration workload and shortens production downtime.

Basic Parameters

Product type: PanelMate 2000 alphanumeric operator interface

Part number: MM-PMA1-400

Brand: Modicon, Schneider Electric

Power supply: 24 VDC

Communication: Modbus serial

Display: alphanumeric display

Input: membrane function keypad

Mounting: cabinet cutout mounting

Front protection: IP65

Rear protection: IP20

Memory: non-volatile memory for project and recipe storage

Operating temperature: 0°C ~ +60°C

Cooling: natural convection

Supported Functions

Real-time display of process readings and equipment operating status

Manual modification of setpoints and alarm acknowledgement

Modbus serial bidirectional data exchange with legacy Modicon PLC

Persistent storage of HMI screen files, recipes and alarm records

Hardware self-diagnosis and communication status indication

Noise filtering and surge protection for serial communication ports

Core Functions

Act as a stable operator interface for legacy automation control systems

Visual LED indication for rapid on-site fault diagnosis

Serve as a practical HMI terminal for continuous process monitoring

Enable local manual intervention for production machinery

Modular replacement for discontinued PanelMate control panel

Provide reliable human-machine interaction for distributed industrial control

Hardware Specifications & Environmental Features

Housing: sealed industrial membrane front assembly

Storage temperature: -25°C ~ +70°C

Relative humidity: 5% to 95% non-condensing

Condition: obsolete original spare part, available stock

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

Note: Confirm Modbus communication parameters, cabinet cutout dimension and stable 24 VDC power supply before ordering.

This is from our current stock.

available stock.xlsx