User`s manual

252

7.3.2 Program example with the periodic interrupt function

(1) Devices used by the user

(2) Program example

Before using an interrupt pointer, enable an interrupt by the IMASK instruction.

*1 When using the periodic interrupt function, CH1 Periodic interrupt setting (Un\G1001) needs to be set.

After CH1 Periodic interrupt setting (Un\G1001) is set, the setting is activated by switching Operating condition settings

batch-change command (Y01) from off to on.

● In the above program example, interrupt programs except for the I58 interrupt program are disabled by the IMASK

instruction.

To execute any interrupt program other than I58, set the bit that corresponds to the execution-target interrupt pointer to 1

(enabled).

● For details on IMASK instruction, please refer to the following manual.

MELSEC-Q/L Programming Manual (Common Instructions))

Device Description

D100 to D115 stores interrupt enable flag for the IMASK instruction

The I58 interrupt program is enabled.

The 58th bit from D100 is turned on.

Interrupt is enabled.

Interrupt is disabled.

Interrupt program

Program for the QD65PD2