Panasonic FP Series Programming Manual page 844

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Updates the inputs or outputs specified by the value of d1_Start (starting word address) and the

value of d2_End (ending word address) immediately after the trigger EN is in the ON-state even in

the program execution stage.

Using this instruction, you can update inputs or outputs without the time-lag caused by scanning.

The same type of operand should be specified for d1_Start and d2_End.

PLCs with configurable, serially numbered I/O addresses:

FP2, FP2SH, FP3 /5 /10 /10SH (PLCs with backplanes)

Specify the word address as 0  d1_Start  d2_End  127.

If only WX10 (or WY10) are to be updated based on the I/O-address

configuration, d1_Start and d2_End will be set as follows: d1_Start = 10 and

d2_End = 10.

Set the same word address in d1_Start and d2_End to update only 1 word.

The partial I/O update instruction is executed only for the I/O units on the master backplane or

expansion backplane. It is not executed for the I/O unit in the slave station of the Remote I/O

PLCs whose I/O addresses cannot be configured and are not serially numbered:

FP-, FP0 (PLCs without backplanes)

The instruction F143_IORF updates the inputs and outputs specified by d1_Start (starting word

address) and d2_End (ending word address) immediately after the trigger turns ON even in the

program execution stage.

 With the FP0 and FP-, refreshing initiated by the IORF command is done

only for the control unit.

 If d1_Start and d2_End are variables and not constants, then the compiler

automatically accesses the variables' values via the index register.

 With input refreshing, WX0 should be specified for d1_Start and d2_End.

 With output refreshing, WY0 should be specified for d1_Start and

Availability of F143_IORF (see page 1321)

This instruction also exists as a P instruction (for FP2/2SH, FP3/5, FP10/10SH PLC types), which

is only executed at the rising edge of the EN trigger. Select [Insert P instruction] from the

"Instructions" pane if you require a P instruction. To facilitate reuse, the instruction then appears

under "Recently used" in the pop-up menu. Press <Ctrl>+<Shift>+<v> within the programming

area to open the list of recently used elements.

Partial I/O update

Data transfer within the PLC