Distributed Equipment

Distributed equipment can be connected to an M580 system in the following ways:

a DIO daisy chain
a DIO daisy chain loop

NOTE: DIO daisy chains and DIO daisy chain loops are described elsewhere in this guide.

Distributed devices in a loop have two Ethernet ports (to maintain the ring), and they support RSTP. An example of equipment on a DIO loop would be several STB islands that use STB NIP 2311 NIMs.

Ethernet distributed equipment that can be put on distributed device clouds include these families of devices:

I/O Scanned Equipment	Equipment that Cannot be I/O Scanned
Altivar variable speed drives (ATV32, ATV61, ATV71, ATV6••, ATV9••)	Magelis HMI controllers
main protection and control functions (TeSys T)	Pelco cameras
ETB (I/O modules), OTB (DIO modules), and STB (modules connected on a single island)
remote master interfaces (Profibus, CANopen, ETG1000, Hart)
EtherNet/IP adapter devices