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Chapter 5 Instruction Specifications
5-66
Item number Arithmetic instructions-21 Name ≤ Relational expression
Ladder format Condition code
Processing time (µs)
Remark
R7F4 R7F3 R7F2 R7F1 R7F0
Average Maximum
d = s1 <= s2 DER ERR SD V C Upper case: W
zzzzz 40
Lower case: DW
Instruction format Number of steps
Condition Steps
d = s1 <= s2 s is a word 4 71
s is a double word 6
Bit Word Double word
Usable I/O
XY
R,
M
TD, SS,
CU, CT WX WY
WR,
WM TC DX DY
DR,
DM
Constant
Other
d Substitution destination {{
s1 Comparand {{{{{{{{
s2 Relational number
{{{{{{{{
Function
• Substitutes “1” when s1 is less than or equal to s2 and otherwise “0” into d, assuming s1 and s2 as binary data.
Notes
• The combinations of d, s1 and s2 are as follows:
ds1s2
Bit Word Word
Bit Double word Double word
Program example
Y00001 = WR10 <= WR100
[
Y00001 = WR10 <= WR100
]
Program description
• When WR10 ≤ WR100, Y00001 is set to “1.” Otherwise, Y00001 is reset to “0.”
d = s1 <= s2