Omron CP1E CPU UNIT SOFTWARE - A-1-17 Interrupt Control Instructions

Appendices
A-36
CP1E CPU Unit Software User’s Manual(W480)
A-1-17 Interrupt Control Instructions
Instruction Mnemonic Variations Symbol/Operand Function
SET INTER-
RUPT MASK
MSKS @ Sets up interrupt processing for I/O interrupts or scheduled inter-
rupts. Both I/O interrupt tasks and scheduled interrupt tasks are
masked (disabled) when the PC is first turned on. MSKS(690) can
be used to unmask or mask I/O interrupts and set the time inter-
vals for scheduled interrupts.
CLEAR
INTERRUPT
CLI @ Clears or retains recorded interrupt inputs for I/O interrupts or sets
the time to the first scheduled interrupt for scheduled interrupts.
DISABLE
INTERRUPTS
DI @ Disables execution of all interrupt tasks.
ENABLE
INTERRUPTS
EI --- Enables execution of all interrupt tasks that were disabled with
DI(693).
MSKS(690)
N
C
N: Interrupt number
C: Control data
Set scheduled interrupt
time interval.
Mask (1) or unmask (0)
interrupt inputs 2 to 7.
Time interval
Scheduled
interrupt
I/O
interrupt
CLI(691)
N
C
N: Interrupt number
C: Control data
Recorded interrupt cleared Recorded interrupt retained
MSKS(690)
N = 102 to 107
N = 4
Time to first
scheduled interrupt
Execution of scheduled
interrupt task.
Internal
status
Interrupt
input n
Interrupt
input n
Internal
status
DI(693)
EI(694)
Disables execution of all
interrupt tasks.
Enables execution of all
disabled interrupt tasks.
DI
EI