Mitsubishi Electric MELSEC L series, Programming Manual

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6 IEC FUNCTIONS
6.9.5 Less than right member ( < ) LT_E
In all the specified data, whether the relationship of < (less than) is satisfied or not is acquired.
Function definition
BOOL LT_E( BOOL EN, ANY_SIMPLE S1, ANY_SIMPLE S2,…., ANY_SIMPLE Sn,
BOOL D1 );
Argument
Argument Name IN/OUT Description
EN IN Execution condition (Function is executed only when the result is TRUE)
S1 to Sn IN Comparison target data
D1 OUT Comparison result
Remarks: D1 = (S1 < S2 ) & (S2 < S3) & ............... & (Sn -1 < Sn)
Return value
Return Value Description
BOOL Execution condition
Example of use
Argument Type ST Program Conversion Result Used Instruction
REAL b_result := LT_E( b_select,
r_data1, r_data2, r_data3,
b_data1 );
LDE< r_data1 r_data2
ANDE< r_data2 r_data3
OUT M8191
LD b_select
AND M8191
SET b_data1
LD b_select
ANI M8191
RST b_data1
LD b_select
OUT b_result
LDE<, ANDE<,OUT,
LD,AND,SET,ANI,
RST
INT B100 :=
LT_E( M20, D10, D20, D30,
M200 );
LD< D10 D20
AND< D20 D30
OUT M8191
LD M20
AND M8191
SET M200
LD M20
ANI M8191
RST M200
LD M20
OUT B100
LD<, AND<,OUT,
LD,SET,ANI,RST