6F3B0250
Basic Hardware and Function 227
7. Instructions

FUN 141 DI Disable interrupt

Expression
Input -[ DI ]- Output
Function
When the input is ON, this instr uction disables the execution of user designated interr upt oper ation,
i.e. timer interrupt program and I/O interrupt programs.
Execution condition
Input Operation Output
OFF No execution OFF
ON Execution ON
Operand
No operand is req u ir ed.
Example
In the above example, the interrupt is disabled when R000 is ON, and it is enabled when R000 is
OFF.
Note
· Refer to the EI instruction (FUN 140).
· If an interrupt factor is occurred during the interrupt disabled state, the interrupt is kept waiting and
it will be executed just af t er the EI instruction is executed.
· The DI instruction can be used only in the main program.
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