Arithmetic instructions
501
Part III FP Instructions
F277_SORT
Sort data in 16-bit data table (in smaller or larger number order)
Input s1 specifies the starting area of the data table, and s2 specifies the end. You determine the
sorting order at input s3.
At input s3 you can enter the following values:
0 ascending order, i.e. begin with the smallest value
1 descending order, i.e. begin with the largest value
The data are sorted via bubble sort in the order specified according to the value entered at input s3.
Since the number of word comparisons increases in proportion to the square of the number of
words, the sorting process can take some time when there are a large number of words. When the
address of the variable at input s1 = s2, no sorting takes place.
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.
PLC types
Availability of F277_SORT (see page 1323)
Variable Data type Function
s1 INT starting area of data table to be sorted
s2 INT ending area of data table to be sorted
s3 INT specifies sorting order: 0 = ascending, 1 = descending
For Relay T/C Register Constant
s1, s2 - WY WR WL SV EV DT LD FL -
s3 WX WY WR WL SV EV DT LD FL dec. or hex.
No. IEC address Set If
R9007 %MX0.900.7 permanently
R9008 %MX0.900.8 for an instant
the address of the variable at input s1 >
s2
the address areas of the values at inputs
s1 and s2 are different
Description
The function sorts values (with +/- sign) in a data table in ascending or descending order.
Data types
Operands
Error flags
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