Maximum Configuration
The maximum number of I/O modules in an Modicon X80 RIO drop (with both a main remote rack and an extension remote rack) using a BM•CRA312•0 adapter depends on the CPU used in the main local rack.
Refer to your system hardware reference manual to select a CPU that supports the number and types of I/O modules you need.
This table shows the maximum number of modules in an RIO drop with a remote extension rack:
Module Type |
Modules in a Drop |
Comment |
|---|---|---|
RIO adapter |
1 |
— |
power supply |
2 |
— |
bus extension |
2 |
A bus extender attaches to the end of each rack and does not use a rack slot. |
I/O |
— |
The number of modules depends on the CPU and the platform used. (Refer to the list of modules that RIO installations support.) |
NOTE: Refer to the M580 Hot Standby guide for instructions to configure RIO drops in Hot Standby systems.