Chapter 5 Instruction Specifications
5-125
Item number FUN instructions-2 Name I/O refresh (All points)
Ladder format Condition code Processing time (µs) Remark
R7F4 R7F3 R7F2 R7F1 R7F0 Average Maximum
FUN 80 (s) DER ERR SD V C
* (ALREF (s)) ↕zzzz
Instruction format Number of steps 432
Condition Steps
FUN 80 (s) — 3
* (ALREF (s))
Bit Word Double word
Usable I/O XY
R,
M
TD, SS,
CU, CT WX WY
WR,
WM TC DX DY
DR,
DM
Constant
Other
s Argument (dummy) {
Function
•This instruction performs I/O refresh of all data in the external I/Os (including link area) during scanning.
* ( ) indicates the display when the Ladder Editor is used.
Notes
•This instruction performs I/O refresh of all external I/Os.
If refresh of certain area is to be performed, use FUN81 or FUN82.
•If the argument s exceeds the maximum I/O number, DER is set to “1” and no processing will be performed.
•Assign argument s as a one-word dummy. The I/O specified for argument s (WR and WM) will not be affected.
Program example
FUN 80 (WR0)
FUN 80 (WR0)
X0 Y100
1]
2]
3]
Program description
I/O refresh
1 scan 1 scan
FUN 80 1]
Program execution 2]
FUN 80 3] I/O refresh
FUN 80 (s)