Description
Schneider Electric BMEH582040 Redundant Processor Module
Configured for redundant CPU execution and high-availability control in Modicon M580 automation architecture, the Schneider Electric BMEH582040 (BMEH582040 redundant processor module) provides direct physical and communication execution within Ethernet-based PLC backplane and remote I/O synchronization systems.
Hardware Specifications
| Parameter |
Specification |
| ModelBrand |
Schneider Electric BMEH582040 |
| OperatingTemp |
0 to 60 degC |
| PowerConsumption |
270 mA at 24 V DC |
| Processor Architecture |
Redundant CPU module (HSBY) |
| Communication Interfaces |
1 x Ethernet TCP/IP service port, 2 x Ethernet TCP/IP device network, 1 x Ethernet HSBY port, USB mini-B |
| Remote I/O Capacity |
Up to 8 remote I/O stations (2 racks per X80 remote drop) |
| Distributed Device Capacity |
Up to 64 devices |
| Memory |
8 MB program RAM, 768 kB data RAM, 10 kB system RAM, 4 GB expandable flash |
| Task Structure |
1 fast periodic task, 1 cyclic/periodic master task |
| Instruction Performance |
Up to 10 Kinst/ms (Boolean), 7.5 Kinst/ms mixed load |
| Environmental Rating |
0 to 60 degC operating, -40 to 85 degC storage |
Schneider Electric Redundant Control and Ethernet Backplane Synchronization
The module operates within a dual-processor redundant execution scheme using high-speed HSBY synchronization over dedicated Ethernet interconnect. Within the Schneider Electric Modicon M580 platform, deterministic execution is maintained through segmented Ethernet TCP/IP channels separating service traffic from device-level I/O scanning. Backplane communication supports parallel redundancy alignment between primary and standby processors, ensuring continuous task state replication during switchover events. Firmware execution integrity is dependent on synchronized flash image alignment across both processor nodes, with Ethernet-based heartbeat monitoring governing failover arbitration logic.
Frequently Asked Questions
Q: Does the BMEH582040 support hot-swapping during runtime operation?
A: The processor module is designed for redundant operation; however, hot-swap behavior is governed by rack configuration and system-level redundancy state. CPU replacement typically requires controlled redundancy transfer to standby before physical removal.
Q: How is redundancy synchronization handled between primary and standby processors?
A: Synchronization is performed via dedicated HSBY Ethernet channel, continuously mirroring system memory, task state, and I/O image tables between both processors.
Q: What is the effect of Ethernet device network separation?
A: Separation of service and device networks isolates configuration traffic from real-time I/O scanning, reducing deterministic jitter in control execution cycles.
Field Installation Guidelines
-
Ensure complete removal of 24 V DC supply before module insertion or removal.
-
Verify correct alignment of HSBY redundant communication interface before seating the module into the rack.
-
Maintain shielded Ethernet cabling with proper grounding at cabinet entry point to minimize EMI coupling.
-
Separate service Ethernet and device network routing to avoid cross-traffic interference.
-
Confirm firmware parity between redundant CPU pairs prior to system start-up.
