Mitsubishi Electric MELSEC-Q/L Programming Manual page 215

Program example
• Program that compares the values of D0 and D1 with the real number 1.23
[Ladder Mode]
Compare E1.23 with D0 and D1.
M0 turns on when E1.23 > D0 and D1.
M1 turns on when E1.23 = D0 and D1.
M2 turns on when E1.23 < D0 and D1.
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6 BASIC INSTRUCTIONS
213
6.1 Comparison Operation Instructions