Yaskawa MP900 Series Machine Controller New Ladder Editor - Manual (Page 237)

2 Standard System Function
2.4.2 First-in First-out Function (FINFOUT)
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2.4.2 First-in First-out Function (FINFOUT)
„ Outline
This is a first-in first-out type block data transfer function. The FIFO data table is composed
of a 4-word header part and a data buffer. 3 words of the header part (data size, input size,
output size) must be set before this function is referenced.
• When the data input command (In-Cmd) becomes ON, the designated number of data is
sequentially stored from the designated input data area to the data area of the FIFO
table.
• When the data output command (Out-Cmd) becomes ON, the designated number of data
are transferred from the head of the data area of the FIFO table to the designated output
data area.
• When the reset command (Reset) becomes ON, the number (amount) of data stored is set
to zero and the FIFO table empty output (Tbl-Emp) becomes ON.
• If "size of available space for data (empty size) < input size" or if "data size < output
size," the FIFO table error (Tbl-Err) becomes ON.
„ Format
Symbol: FINFOUT
Full Name: First-in First-out
Category: SYSTEM
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