7 APPLICATION INSTRUCTION
7.5 Data table operation instruction
355
7
Writing data to the data table
SFWR(P)
These instructions write data for first-in first-out (FIFO) and last-in first-out (LIFO) control.
■Descriptions, ranges, and data types
■Applicable devices
Ladder diagram Structured text
ENO:=SFWR(EN,s,n,d);
ENO:=SFWRP(EN,s,n,d);
Operand Description Range Data type Data type (label)
(s) Word device number storing data to be put in first 16-bit signed binary ANY16
(d) Start word device number storing and shifting data
(The start is a pointer. The data is stored starting from (d)+1.)
16-bit signed binary ANY16
(n) Number of stored points plus "1". 2 to 32768 16-bit unsigned binary ANY16
Operand Bit Word Double word Indirect
specification
Constant Others
X, Y, M, L,
SM, F, B, SB
U\G T, ST,
C, LC
T, ST, C, D,
W, SD, SW, R
U\G Z LC LZ K, H E $
(s)
(d)
(n)
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