Modicon M580 Plc Page 1-14 Presentation

1/14 Presentation (continued) Modicon M580 automation platform Ethernet backplane The M580 dual backplanes provide X-bus connection and Ethernet connectivity. One Ethernet switch is embedded in the backplane with connectivity to some slots on the backplane. There are 2 types of Ethernet backplane: for standard applications with one power supply module inserted, up to 12 modules will be supported. For high-availability applications with 2 power supply modules for redundancy, 6 or 10 modules will be supported. Not all slots have Ethernet connectivity in the case of 12-slot backplanes. Using such connectivity, Ethernet-based modules (both Schneider Electric and third-party) can communicate with any other module or device that is reachable via the Ethernet and IP networks. An additional connector is added to some slots of the backplane, next to the X-bus connector. The Ethernet backplane provides multiple communication buses compared with the X-bus backplane to improve connectivity on the backplane. These buses can be connected to Ethernet modules and used to communicate different types of data for different purposes (see page 1/29). The following communication buses are present in Ethernet backplanes: b X-bus b Ethernet Expanded backplanes To expand the configuration using additional racks, a bus expansion module ( BMXXBE1000 ) and X-bus cables are required (see page 1/30). The expanded backplane can be either a standard backplane, including a power supply module and supporting up to 12 modules, or a dual power supply backplane, including 2 redundant power supply modules and supporting up to 10 modules. However, an expanded backplane can only be an X-bus rack, plugged with the basic I/O modules, and is not compatible with all the advanced function modules (such as HART or weighing). Please refer to the compatibility table for more information (see page 1/16). It is also possible to expand a drop's backplane. Each rack will be assigned a physical address using 4 micro switches located in the bus expansion module: b The main rack containing the processor will be assigned address 0. b The other racks will be assigned addresses 1 to 7. 2 1 3 4 5 6 7 8 9 10 2 1 3 4 5 6 7 8 9 10

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