The Schneider Electric BMXXBP1200, also cataloged as the BMXXBP1200 Backplane, operates as a dedicated hardware component for inter-module electrical interconnect and backplane bus distribution within the Modicon M340 automation platform.
Hardware Specifications
| Parameter | Specification |
|---|---|
| Model | BMXXBP1200 |
| Brand | Schneider Electric |
| Origin | France |
| Weight | 1.4 kg |
| Dimensions | 508 mm x 25 mm x 102 mm |
| Operating Temp | 0 to 60 deg C |
| Relative Humidity | 10 to 95 % without condensation |
| Power Consumption | 0.74 W |
| Number of Slots | 12 |
| Electrical Connection | 1 connector (XBE) expansion module |
| Fixing Mode | By 4 M6 screws plate; by 4 screws 4.32 to 6.35 mm panel |
| IP Rating | IP20 |
| Protective Treatment | TC |
Backplane Bus Communication & Firmware Compatibility
The BMXXBP1200 supports high-speed backplane bus communication for deterministic data exchange between BMXCPS power supplies, BMXP34 processors, I/O modules, and specific application modules. Module addressing is fixed by slot position, eliminating manual DIP-switch configuration. Firmware compatibility is maintained through alignment with the Modicon M340 hardware reference table; mismatched firmware revisions may result in backplane initialization faults during power-up diagnostics.
Frequently Asked Questions
Q: Does the BMXXBP1200 support hot-swapping of I/O modules?
A: No. The M340 backplane does not support live insertion or removal of modules. Power must be removed before any module change to prevent backplane bus disruption.
Q: What is the maximum allowable backplane current load per slot?
A: Current allocation depends on the installed power supply model and total module consumption. Total backplane load must remain within the rated capacity of the BMXCPS unit to ensure stable operation.
Q: Is the BMXXBP1200 compatible with older Modicon Quantum racks?
A: No. Mechanical dimensions, connector layout, and bus signaling differ; the BMXXBP1200 is exclusive to the Modicon M340 series.
Field Installation Guidelines
Mount the backplane using four M6 screws for plate mounting or four screws sized 4.32 to 6.35 mm for panel mounting. Ensure screw torque meets mechanical rigidity requirements to prevent vibration-induced connector wear. Maintain minimum clearance around the rack for adequate airflow, especially when ambient temperatures approach 60 deg C. Ground the mounting surface to the facility earth grid to reduce electrical noise coupling into the backplane bus lines. Route signal and power cabling separately to minimize electromagnetic interference.
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