SE Modicon M580 Brochure

Modicon M580 automation platform Architectures High-availability architectures

Presentation (continued)

Components of an high-availability system (continued) Modicon M580 Redundant processors At the heart of an high-availability architecture are two PLC racks (“Primary” and “Standby”) with identical hardware configurations, based on BMEH58 pp 40 redundant CPUs connected via a high-speed (1 Gbps) communication link. The volume of data exchanged between the Primary and Standby PLCs can reach 4 MB depending on the CPU. b The Primary PLC executes the application program and controls the I/Os located in X80 drops (redundant processors do not support local I/Os.) b The Standby PLC remains in the background. In the event of a detected error affecting the Primary PLC, the Standby system switches over automatically, changing over execution of the application program and control of the I/O to the Standby PLC with an up-to-date data context. Once the changeover is complete, the Standby PLC becomes the Primary PLC while the former Primary PLC is being cleared from the detected error: when clearance is done, the PLC reconnects to the standby system and acts as the Standby PLC. The changeover is performed smoothly at the outputs and is completely transparent to the process. In addition to the HSBY communication link, Primary and Standby PLCS may also be connected to each other by an Ethernet link providing a redundant path, thus constituting a main ring that enhances PLC availability. See page 2/8 for more details about redundant processors. Modicon X80 Redundant power supplies and compatible backplanes For high-availability applications, two BMXCPS pp 02 redundant power supplies can be used on a same rack to increase the security of power supply. They are supported by 6-slot BMEXBP0602 backplane and 10-slot BMEXBP1002 backplane equipped with dual slots marked CPS1 and CPS2. On CPS1 slot, the power supply is initially set as Primary and on CPS2 slot, as Standby. When power stops being supplied in accordance with expected rate, they switch roles so that power can be continuously delivered. See Modicon X80 modules catalog for more details. Redundant network equipment Redundant CPUs feature a specific slot on the front panel for a SFP socket supporting the HSBY communication link between them. Depending on the distance between Primary and Standby PLC, SFP transceivers can be connected via copper or fiber optic cable, the latter requiring a fiber optic converter module installed on the rack (NRP fiber optic converter). Modicon M580 Communication modules An high-availability architecture may require the use of one or several Modicon M580 communication modules: b BMENOC0301 or BMENOC0311 Ethernet communication module v to connect Primary and Standby PLCs to each other and create the Ethernet link v to connect an Ethernet network to the Ethernet backplane of the local rack v to attach a DIO ring to the main ring (up to 128 distributed devices) v to scan distributed equipment b BMENOC0321 Ethernet communication module (on local rack) v to create a redundant control network link between the two PLCs v to create transparency between the device network and the control network b BMENOP0300 communication module for supporting IEC 61850 communication b BMENOR2200H communication module (in Primary and Standby racks) for supporting IEC 60870-5-104 or DNP communication b BMENUA0100 communication module to implement OPC UA communication protocol for: v Primary PLC to Standby PLC communication v SCADA to PLC communication flow v PLC to device communication

Modicon M580 (“Primary PLC”)

Quantum and Modicon X80 Ethernet RIO

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NRP

CRA

CRA

Ethernet DIO device cloud (3)

Ethernet network

2

Modicon X80 RIO

HSBY communication link HSBY communication link Modicon managed switch (4) Modicon managed switch (4) Modicon managed switch (4) NRP

3

CRA

CRA

Ethernet network

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Modicon X80 RIO

Ethernet fiber optic network

CRA

CRA

Ethernet network

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Local HMI (3)

Ethernet RIO

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Ethernet network

Modicon M580 (“Standby” PLC)

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Modicon M580 Hot Standby Ethernet I/O architecture, long distance

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9

10

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