Delta VFD11AMS21AFSHA, User Manual

Page: 424 / 445

Chapter 16 PLC Function Applications

MS300
(High Speed Model)
16-93
API
FLD
※
S1 S2
Floating point number contact form compare LD*
275~
280
Bit device Word device 16-bit command
－ － － －
32-bit command (9 STEP)
FLD
※
Continuous
execution type
－ －
Flag signal: none
X Y M K H KnX KnY KnM T C D
S1
＊ ＊ ＊
S2 ＊ ＊ ＊
Notes on operand usage:
＃：
&
、
|
、
^
Please refer to the function specifications table for each device in
series for the scope of device usage

S
1
: data source device 1.
S
2
: data source device 2.
 This command compares the content of
S
1
and
S
2
. Taking "FLD=" as an example,
if the result of comparison is "equal," this command will be activated; but it will not
be activated when the result is "unequal."
 The FLD* command can directly input floating point numerical values (for
instance: F1.2) to the
S
1
,
S
2
operands, or store floating-point numbers in register
D for use in operations.
 This command can be used while directly connected with the busbar
API No. 32-bit commands
Conditions for
activation
Conditions for
inactivation
275 FLD
＝
S
1
＝ S
2
S
1
≠
S
2
276
FLD
＞ S
1
＞ S
2
S
1
≦ S
2
277
FLD
＜
S
1
＜
S
2
S
1
≧
S
2
278 FLD
＜＞
S
1
≠
S
2
S
1
＝ S
2
279
FLD
＜＝
S
1
≦ S
2
S
1
＞ S
2
280
FLD
＞＝ S
1
≧ S
2
S
1
＜ S
2

When the floating point number of register D200 (D201) is less than or equal
to F1.2, and X1 activated, contact Y21 will be activated and remain in that state.
FLD<=
D200 F1.2
X1
SET
Y21