Compatibility and Limitations

Hardware Compatibility

The following standalone CPUs with Ethernet I/O scanner service (both RIO and DIO scanner service) can be used in an open Ethernet network:

BMEP582040(H), BMEP582040S
BMEP583040
BMEP584040, BMEP584040S
BMEP585040(C)
BMEP586040(C)

For detailed information on the limit and performance of the compatible M580 CPU refer to chapter Performance Characteristics.

Each RIO drop contains one of the following adapter modules to be connected in an open Ethernet network:

BMXCRA31210(C)
BMECRA31210(C)

Network Limitations

The service port bandwidth of an M580 CPU is limited to 100 Mbit/s whereas the service port bandwidth of a BM•CRA31210 module is capped to 5 Mbit/s.

NOTICE

LOSS OF CONNECTIVITY WITH THE RIO DROPS

When designing the open Ethernet network, make sure that the total traffic managed by the service port of the BM•CRA31210 module does not exceed 5 Mbits/s.

Failure to follow these instructions can result in equipment damage.

Factors typically affecting network bandwidth at the service ports of the modules are:

Type of I/O, expert or communication modules installed in the RIO drops
Number of RIO drops scanned
Scan rate of the RIO drops

The processing capability without packet loss, including unicast, multicast, and broadcast frames management is limited for M580 CPU and BM•CRA31210.

Design the open Ethernet network architecture by taking into account that the overall traffic does not exceed the following limits: M580 CPU: 15000 packets per second (pps) BM•CRA31210: 8000 packets per second (pps)