703
Interrupt Control Instructions Section 3-19
Examples When CIO 0.,00 is ON in the following example, DI(693) disables all interrupt
tasks.
3-19-5 ENABLE INTERRUPTS: EI(694)
Purpose Enables execution of all interrupt tasks that were disabled with DI(693).
Ladder Symbol
Variations
Applicable Program Areas
Description EI(694) is executed from the main program to temporarily enable all interrupt
tasks that were disabled by DI(693). DI(693) disables all interrupts (input inter-
rupts, scheduled interrupts, high-speed counter interrupts, and external inter-
rupts).
Flags
DI
END
DI
END
DI instruction is valid.
Interrupt tasks are executed
under registered conditions.
DI instruction is valid.
Task No. 0
Task No. 1
0.00
Disables execution of all interrupt tasks.
EI(694)
Variations Executed Each Cycle for Normally ON
Condition
EI(694)
Executed Once for Upward Differentiation Not supported
Executed Once for Downward Differentiation Not supported
Immediate Refreshing Specification Not supported
Block program areas Step program areas Subroutines Interrupt tasks
OK OK OK Not allowed
Name Label Operation
Error Flag ER ON if EI(694) is executed from an interrupt task.
OFF in all other cases.
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