Configured for PLC execution, I/O management, and communication handling in the Modicon M340 automation platform, the Schneider Electric BMXP342020 (BMXP342020 Processor Module) provides direct hardware execution. It supports local discrete and analog I/O processing through the Modicon M340 backplane while integrating Ethernet Modbus communication for controller-level data exchange.
Suffix Breakdown & Model Matrix
The supplied documentation identifies BMXP342020 as a single catalog number. No official suffix or ordering-code decomposition is specified in the provided data; therefore, no suffix matrix is included.
Hardware Specifications
| Parameter | Specification |
|---|---|
| Model | BMXP342020 |
| Brand | Schneider Electric |
| Origin | Not specified |
| Product Type | Processor Module |
| Product Line | Modicon M340 |
| Mounting | Rack |
| Power Supply | Internal power supply from rack |
| Power Consumption | 95 mA maximum current consumption from backplane |
| Communication | Ethernet Modbus |
| Maximum Analog I/O | 256 I/O |
| Maximum Discrete I/O | 1024 I/O |
| Analog Resolution | 12-bit |
| Operating Temp | 0 to 60 deg C |
| Storage Temp | -40 to 85 deg C |
| Humidity | 10 % to 95 % non-condensing |
| Protection | Overvoltage and overcurrent protection |
| Certifications | UL, CE, RoHS |
| EAN | 3595863910711 |
| Weight | 0.45 kg (shipping data also lists 0.2 kg) |
| Dimensions | 3.1 x 10.5 x 10.3 cm (estimated shipping size) |
Backplane Communication and I/O Density Scaling
The BMXP342020 exchanges process data across the Modicon M340 backplane using the rack’s internal communication architecture. Local I/O capacity supports configurations of up to 256 analog channels and 1024 discrete channels, allowing processor resources to be allocated across multiple distributed I/O modules installed within the same rack architecture.
Firmware compatibility should be verified before replacing an existing processor in an operating system. The installed firmware revision and engineering software version should match the hardware revision requirements specified for the target controller configuration.
Frequently Asked Questions
Q: Can the BMXP342020 be replaced while the rack remains energized?
A: Processor replacement should follow the procedures specified for the Modicon M340 platform. Removing or inserting the processor while the controller is executing may interrupt CPU operation and field communications.
Q: How is the processor powered?
A: The module receives operating power from the rack backplane through the internal power distribution system. No separate field power connection is required for the processor itself.
Q: What should be checked before performing a firmware update?
A: Verify compatibility between the processor firmware, engineering software version, and installed system configuration before initiating an update. Back up the application program prior to maintenance.
Field Installation Guidelines
- Install the processor only after the rack power supply has been verified for adequate capacity.
- Ensure the module is fully seated in the backplane connector before securing the retaining mechanism.
- Separate Ethernet communication cables from high-voltage power wiring to reduce electromagnetic interference.
- Connect cable shields according to the site grounding practice to minimize conducted electrical noise.
- Confirm rack grounding continuity before commissioning the controller.
- Verify the processor status indicators after power-up before downloading or starting the control application.
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