Delta MH300 Series - Page 934

Chapter 16 PLC Function ApplicationsMH300
16-71
API
ECMP
Compare binary floating point numbers
110
D
P
bit device
Word device
16-bit command
－
－
－
－
32-bit command (13 STEP)
DECMP
Continuous
execution type
DECMPP
Pulse
execution type
Flag signal: none
X
Y
M
K
H
KnX
KnY
KnM
T
C
D
S1
＊ ＊ ＊
S2
＊ ＊ ＊
D
＊ ＊ ＊
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, use series and parallel connections for M10–M12.
 Use the RST or ZRST command to clear the result.