Schneider Electric BMEP581020 Modicon M580 Processor Module

The Schneider Electric BMEP581020, also cataloged as the BMEP581020 processor module, provides CPU execution, Ethernet communication, memory management, and local I/O processing within the Modicon M580 PAC platform. It supports up to 4 local racks, 1024 discrete I/O channels, 256 analog I/O channels, 64 distributed devices, and Ethernet-based device communication.

Hardware Specifications

M580 Ethernet and I/O Architecture

The BMEP581020 provides one Ethernet TCP/IP service interface and two Ethernet TCP/IP device-network interfaces. The device-network ports support EtherNet/IP and Modbus TCP communication. The processor supports up to 64 distributed devices and provides DIO scanner functionality.

Local processing capacity is limited to 4 racks, with up to 1024 discrete I/O channels and 256 analog I/O channels. The processor also supports application-specific functions including time stamping, motion control, counting, HART, SSI encoder, and serial-link interfaces.

The internal memory structure consists of 4 MB program RAM, 384 kB data RAM, 10 kB system memory, and 4 GB expandable flash storage.

Frequently Asked Questions

Q: How is the BMEP581020 powered?

A: The processor receives its power internally through the rack backplane. The specified current consumption is 270 mA at 24 VDC.

Q: How many local I/O racks can the processor control?

A: The BMEP581020 supports up to 4 local racks, with a maximum local capacity of 1024 discrete I/O channels and 256 analog I/O channels.

Q: Where must the CPU be installed in the M580 rack?

A: The CPU must be installed in rack slots marked 00 and 01. Two screws at the top of the CPU secure the module to the rack.

Field Installation Guidelines

Install the BMEP581020 in the designated Modicon M580 rack positions and secure the module using the specified top mounting screws. Confirm that the rack power supply and backplane connections are correctly installed before applying power.

Route Ethernet communication cables separately from high-voltage and high-current conductors where practical. Maintain appropriate cable separation to reduce electromagnetic coupling. Connect cable shields and protective earth according to the applicable M580 installation documentation and site grounding scheme.

The module has an IP20 enclosure rating and should therefore be installed inside an enclosure providing the required protection against dust, moisture, and accidental contact. Maintain the specified operating temperature and humidity limits.

Use compatible Modicon X80 I/O, backplane, and cabling components. Configure the processor with EcoStruxure Control Expert and verify the installed firmware, hardware configuration, Ethernet addressing, and I/O topology before placing the controller into service.