Delta VFD11AMS21AFSHA, User Manual

Page: 395 / 445

Chapter 16 PLC Function Applications

MS300
(High Speed Model)
16-64
API
ECMP
Comparison of 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
Please refer to the function specifications table for each device in
series for the scope of device usage

S
1
: Comparison of binary floating point numbers value 1.
S
2
: Comparison of
binary floating point numbers value 2.
D
: Results of comparison, occupies 3
consecutive points.
 When binary floating point number 1 is compared with comparative binary
floating point number 2, the result of comparison (>, =, <) will be expressed in
D
.

If the source operand S
1
or
S
2
designates a constant K or H, the command will
transform the constant to a binary floating-point number for the purpose of
comparison.
 When the designated device is M10, it will automatically occupy M10-M12.
 When X0=On, the DECMP command executes, and one of M10-M12 will be On.
When X0=Off, the DECMP command will not execute, and M10-M12 will remain
in the X0=Off state.
 If results in the form of ≥ , ≤ , or ≠ are needed, they can be obtained by series and
parallel connection of M10-M12.
 Please use the RST or ZRST command to clear the result.