Mitsubishi MELSEC iQ-F FX5 series, Programming Manual, Page: 463 / 888

7 APPLICATION INSTRUCTION
7.7 Real Number Instruction
461
7
Searching the maximum value of single-precision real number
EMAX(P)
These instructions search for the maximum value in the (n) point(s) of single-precision real number block data in the device
starting from the one specified by (s), and store the maximum value in the device areas specified by (d) and (d)+1.
These instructions also store the location of the first maximum value from (s) in the device specified by (d)+2 and the number
of maximum values in the device specified by (d)+3.
*1 The EMAX instruction is not supported by the ST language. Use MAX of the standard function.

Page 804 MAX(_E), MIN(_E)
Setting data
■
Descriptions, ranges, and data types
■
Applicable devices
Processing details
• These instructions search for the maximum value in the (n) point(s) of single-precision real number block data in the device
starting from the one specified by (s), and store the maximum value in the device areas specified by (d). These instructions
also store the location of the first maximum value from (s) in the device specified by (d)+2 and the number of maximum
values in the device specified by (d)+3.
• The start of the block data in the device specified by (s) is counted as 1st point when the location is counted.
• The following values are stored in (d).
• When (n) is 0, the processing is not performed.
Ladder diagram Structured text
*1
ENO:=EMAXP(EN,s,n,d);
Operand Description Range Data type Data type (label)
(s) Search target data

Single-precision real number Single-precision real number
(d) Search result

Single-precision real number Single-precision real number
(n) Number of search target data points

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)
            
Data type Description
(d) Single-precision real number Maximum value
(d)+1
(d)+2 16-bit data Maximum value position
(d)+3 16-bit data Number of maximum values
(s) (d) (n)
1.2345
123.45
-1.2345
-12.345
-123.45
(s)+1, (s)
(s)+3, (s)+2
(s)+5, (s)+4
(d)+1, (d)
(d)+2
(d)+3 (s)+7, (s)+6
(s)+9, (s)+8
(n)
123.45
2
1
Maximum value
Position
Number of data