Schneider Electric BMXP3420102 Modicon M340 processor module

Evidence-backed reference for a Modicon M340 processor module with documented I/O and communication roles.

Documented system function and position

Rebuilt from individual evidence

The exact reference is identified as a Schneider Electric processor module for the Modicon M340 automation platform.

The documented listing reports up to 1024 discrete I/O, 256 analog I/O, Modbus RTU/ASCII, and CANopen support.

Within an M340 control system, the processor module executes control logic and exchanges data with rack I/O and supported networks.

Unknown: Installed rack layout, firmware, communication wiring, and current lifecycle require separate verification.

Exact reference: BMXP3420102
Category: PLC / CPU
Evidence checked: 2026-09-12

System role

This section explains what the product does and where it acts in the surrounding system.

Function: Controls a Modicon M340 automation rack by processing logic and exchanging I/O data.
System position: Sits in the Modicon M340 rack between the control program and rack I/O or connected field networks.
Upstream / inputs: Receives the control program and signals from M340 rack I/O and supported Modbus or CANopen links.
Downstream / outputs: Transmits control decisions and data to rack I/O and connected Modbus or CANopen devices.
Limitations: Unknown: Installed rack layout, firmware, communication wiring, and current lifecycle require separate verification.

Evidence ledger

Facts, inferences, and unknowns are kept separate.

Facts

AutoDCSTech identifies BMXP3420102 as a Schneider Electric processor module for the Modicon M340 automation platform.
Confidence: medium
- www.autodcstech.com — retrieved 2026-09-12; medium confidence
The listing reports up to 1024 discrete I/O, 256 analog I/O, Modbus RTU/ASCII, and CANopen support.
Confidence: medium
- www.autodcstech.com — retrieved 2026-09-12; medium confidence

Inferences

Within a Modicon M340 control system, the processor module executes control logic and exchanges data with rack I/O and supported Modbus or CANopen devices.
Confidence: medium
Rationale: The system position is inferred from the exact product function and the documented system or interface context.
- www.autodcstech.com — retrieved 2026-09-12; medium confidence

Unknowns

Unknown: Installed rack layout, firmware, communication wiring, and current lifecycle require separate verification.
Confidence: low
Missing evidence: Installed rack layout, firmware, communication wiring, and current lifecycle require separate verification.

System position diagram

Diagram showing BMXP3420102 between upstream system context and downstream equipment. — System position inferred from the documented processor function and communication interfaces.

View Mermaid source

flowchart LR
  U["Upstream system"] -->|"Control logic and I/O or network data"| P["BMXP3420102"]
  P -->|"Documented downstream path"| D["Downstream equipment"]

View diagram labels

Nodes: Upstream system; BMXP3420102; Downstream equipment
Edges: Control logic and I/O or network data

Next action

The available evidence supports a claim-linked identification of BMXP3420102 as a Modicon M340 processor module.

Verify the complete order code, installed M340 rack, firmware, and communication wiring before replacement or commissioning.

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