Chapter 16 PLC Function ApplicationsMS300
723
Compare binary floating point numbers
Continuous
execution type
Notes on operand usage:
The operand D occupies three consecutive points. Refer to the
function specifications table for each device in series for the scope
of device usage.
S
1
: Binary floating point number 1. S
2
: Binary floating point number 2. D:
Results of comparison, occupies three consecutive points.
Compares binary floating point number 1 with binary floating point number 2,
and stores the result of comparison (>, =, <) in D.
If the source operand S
1
or S
2
designates a constant K or H, the command
converts the constant to a binary floating point number for the purpose of
comparison.
When the designated device is M10, it automatically occupies M10-M12.
When X0 = ON, the DECMP command executes, and one of M10–M12 is ON.
When X0 = OFF, the DECMP command does not execute, and M10–M12
remains in the X0 = OFF state.
For ≥, ≤, or ≠ comparison results, use series and parallel connections for M10–
M12.
Use the RST or ZRST command to clear the result.
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