Hardware in a Complex M580 System
16 NHA58892 10/2019
Modules and Switches in Complex M580 Systems
Dual-Ring Switches (DRSs)
In complex M580 architectures, you can use a DRS to perform these functions:
integrate fiber cable on the main ring for distances greater than 100 m between two contiguous
remote drops. (You may also use BMX NRP 020•
(see Modicon M580 Standalone, System
Planning Guide for, Frequently Used Architectures)
fiber converter modules for this purpose.)
enable distributed equipment to participate on the RIO network
(see page 157)
enable RSTP recovery support for devices on the sub-rings
isolate the sub-rings from one another and from the main ring to improve system robustness
provide redundancy between the main ring and a sub-ring when two DRSs are installed next to
each other with specific predefined configuration files
(see page 27)
separate primary and standby PACs in a long-haul Hot Standby system
(see Modicon M580 Hot
Standby, System Planning Guide for, Frequently Used Architectures)
NOTE: You can also use a BMENOS0300 module on the local rack or a remote drop to manage
distributed equipment in a non-redundant manner.
The following graphics are example of DRSs with copper ports and copper/fiber ports. The
numbers in the graphics refer to the ports on the DRSs, which correspond to elements of
predefined configurations you will download to the switch. Refer to the
Predefined Configuration
Files chapter (see page 27)
for details.
NOTE: Use the predefined DRS configurations. Since they are optimized to support 50 ms
maximum recovery time, the system can recover within 50 ms from a communication disruption on
the main ring or on a sub-ring. If you need to customize a configuration, contact your local
Schneider Electric office before adapting a switch configuration for your system.
Except when enabling or disabling ports that are not connected to either a main ring or a sub-ring,
do not adjust the configuration parameters or alter the port usage in the predefined configuration
file. Changing the configuration parameters or the port assignments can compromise the
effectiveness and accuracy of the switch, as well as the performance of the RIO network.
Port mirroring is disabled by default. If you enable port mirroring, you can select the ports on which
you want to analyze traffic as the source ports. Ports 1-7 can be selected as source ports. Port 8
is the destination port, and it cannot be changed.
WARNING
UNEXPECTED EQUIPMENT BEHAVIOR
Do not modify any parameter in the DRS predefined configuration you download to the switch,
except enabling or disabling port mirroring on Ethernet ports.
Failure to follow these instructions can result in death, serious injury, or equipment damage.