1747-6.22, Backup Scanner User Manual

7-104 RIO Block Transfer
SLC
Processor 1
Chassis Backplane
M Files
Publication 1747-6.22
RIO Block Transfer Theory of Operation-Path of a Block Transfer
M
Files
_ _ _ = path of a Block Transfer (BT)
1 SLC 5/02 processor or above
RIO
Scanner
I/O
Image
RIO Link
Refer to the diagrams on the following pages for more
details on BTR and BTW sequence of operation.
Block Transfer Write (BTW) data travels from the SLC
processor across the chassis backplane via the
scanner’s M files. The scanner then sends the data
across the RIO link to the adapter of intelligent I/O
module.
Block Transfer Read (BTR) data travels from the
adapter of intelligent I/O module over the RIO link to
the scanner. The chassis backplane then transfers BTR
data via the scanner’s M files to the SLC processor.
The SLC control program processes the data once the
SLC receives it from the scanner.
Adapter or
Intelligent I/O
Module