Intpg (Unit Interruption Program Start), Iret; Program End) - Panasonic FP7 Series Command Reference Manual

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3.39 INTPG (Unit Interruption Program Start), IRET (Unit Interruption Program

3.39 INTPG (Unit Interruption Program Start), IRET (Unit Interruption

Ladder diagram

Outline of operation

● These instructions are described in subprogram areas in the same PB to indicate the start

and end positions of interruption program.

● Activates the interruption program of a corresponding program number when the unit's

interruption condition is met.

● Returns to the main program by executing the IRET instruction.

● To execute an interruption program, it is necessary to interrupt the CPU by the EI instruction

and enable a unit to interrupt by the IMASK instruction.

● The interruption activation request signal on the unit side will be held until the corresponding

interruption program is executed or the unit interruption clear instruction "ICLR" instruction is

Specification of interruption program number [n]

● Interruption program number n is specified in decimal by the combination of a slot number (1

to 16) and a bit number (0 to 7).

● The allocation of the last one digit varies depending on units.

● The interruption program numbers for a high-speed counter unit and multiple input/output

unit are as shown below.

Comparison match

flag of unit

CH0 Comparison

match 0 flag

CH0 Comparison

match 1 flag

WUME-FP7CPUPGR-12

Interrupt program

Corresponding interruption program No.

Main program area

Sub program area