The BMEH584040(S) and BMEH586040(S) Hot Standby CPUs support Quantum RIO drops. The Quantum RIO drops can contain only non-safety modules. A Quantum RIO drop consists of a main remote rack, and may contain an extended rack. For the type of modules that reside on a Quantum RIO drop, refer to the
Quantum EIO Remote I/O Modules Installation and Configuration Guide.
A Quantum RIO drop can be connected via copper wire directly to the main ring, or as a sub-ring.
Quantum RIO drops provide deterministic communication so that Quantum RIO modules synchronize with CPU tasks.
NOTE: M580 Hot Standby CPUs support only MAST tasks for Quantum I/O. FAST, AUX0 and AUX1 tasks are not supported.
An M580 Hot Standby system can support a maximum of 31 RIO drops. The maximum number of drops depends on your
choice of CPU.
Selecting a Quantum RIO Adapter Module
Each RIO drop contains one 140CRA31200 adapter module.
By default, the adapter module is placed in position 1 in the main remote rack. However, you can place it in another position in the rack.
Remote Racks and Power Supplies
Both the main remote rack and an optional extended remote rack can be any Quantum 140XBP0••00 rack.
Each rack has its own power supply. You can add any Quantum power supply to any available slot in a main remote and extended remote rack.
The M580 Hot Standby system supports all Quantum I/O modules in a Quantum RIO drop. For more information, refer to the topic
I/O Devices in the
Quantum EIO System Planning Guide.
Disconnecting an RIO Drop
When a Quantum RIO drop is disconnected from the Ethernet RIO main ring:
