A SERVICE OF

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(3) Processing of file register's block numbers
(a) When switching from the scan execution type program to the interrupt/fixed scan
execution type program
The CPU module saves the file register block numbers in the scan execution type program, and passes them
to the interrupt/fixed scan execution type program.
(b) When switching from the interrupt/fixed scan execution type program to the scan
execution type program
The CPU module restores the saved block numbers of the file register.
Figure 9.66 Saving and restoring file register's block numbers
[RSET K0]
Execution program
Save area
Switching
Restored
Block 1
Restored
Block 1Block 1Block 1 Block 1Block 0
Block 1
Passed
Saved
Block1 0
Block No. of
file register
Scan execution
type program
Scan execution
type program
Interrupt/fixed scan
execution type
program