Mitsubishi Electric MELSEC-Q/L Programming Manual page 466

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■Incorrect operation example

The following example shows the operation performed when D0 is specified for FD0 in the subroutine program and D1 is used

in the subroutine program.

[Program example]

[Operation performed after subroutine program execution]

Before the execution

of subroutine program

*1 Stores the execution result of the subroutine program.

*2 Replaced by the value of the function device.

*3 D1 does not reflect the value of the function device.

■Correct operation example

The following example shows the operation performed when D0 is specified for FD0 in the subroutine program and D4 is used

in the subroutine program.

[Program example]

7 APPLICATION INSTRUCTIONS

7.6 Structure Creation Instructions

Immediately after the execution

of CALL instruction

At the time of subroutine

program execution

After the execution

of RET instruction