Yaskawa MP900 Series Ladder Programming Manual - Manual (Page 300)

5.10 System Function Instructions
5.10.2 First-in First-out (FINFOUT)
5-231
Instructions
5
The data from MW00000 to MW00003 is stored in the FIFO table buffer when switch 1 turns ON.
The data storage size in DW00005 is set to 4.
Next, when switch 2 turns ON, two words of data from the first address in the FIFO table buffer are output to the area
from MW0010 to MW0011. The data storage size in DW00005 is set to 2.
Register Data FIFO Table Data Buffer Data
MW00000
MW00001
MW00002
MW00003
123
234
345
456
DW00006
DW00007
DW00008
DW00009
DW00010
:
DW00017
123
234
345
456
0
:
0
Stored area
FIFO Table Data Buffer Data Register Data
MW00010 DW00006
→ 345 MW00011
MW00012
123
234
0 DW00007
123
234
→ 456
Stored area
The output data is moved out and
the remaining data is moved forward.