Technical information

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Modicon M580 PLC
Premium racks
Modicon X80 expansion rack
X-bus
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. 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 1/25).
The following communication buses are present in Ethernet backplanes:
b X-bus
b Ethernet
Expanded backplanes
To expand the conguration using additional racks, users must use a bus expansion
module (BMXXBE1000) and X-bus cables (see page 1/26). An expanded
backplane can only be an X-bus rack.
Each backplane has to include a power supply module and will support up to 12
modules.
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.
Premium X-bus expansion - making migration as simple as
possible
An M580 system allows TSXRKYpEX Premium expanded local racks to be added
to the conguration. The use of Premium racks in a M580 conguration means the
existing cabling can be retained.
This smooth migration path means that Premium devices, such as discrete and
analog I/O, and counter modules, can be retained.
Indeed, the M580 processor is able to manage the I/O and application-specic
modules on Premium local racks. For further information, see page 1/26.
It is also possible to replace a Premium local rack with an M580 rack if necessary.
Unity V8.0 offers the option to retain the I/O topology in the Premium expansion rack
when revamping a Premium application.
Premium X-bus expansion example
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