Delta MS300 Series User Manual page 763

Chapter 16 PLC Function ApplicationsMS300
API
FLD※
275–
280
bit device
X Y M
S1
S2
Notes on operand usage: ※,：, =, >, <, <>, ≤, ≥
Refer to the function specifications table for each device in series
for the scope of device usage.





Word device
K H KnX KnY KnM
S : data source device 1. S
1
This command compares the contents of S
example, if the result of comparison is "equal", this command activates; but it
does not activate when the result is "unequal".
The FLD* command can directly input floating point numbers (for instance:
F1.2) to the S , S operands, or store floating point numbers in register D for
1 2
use in operations.
You can use this command while directly to connect with the busbar
Api No. 32-bit Commands
275 FLD =
276 FLD >
277 FLD <
278 FLD < >
279 FLD < =
280 FLD > =
When the floating point number in register D200 (D201) is less than or equal to
F1.2, and X1 is activated, then contact Y21 activates and remains in that state.
D200
FLD<=
Floating point number contact form compare LD*
16-bit command
T C D －
＊ ＊ ＊
32-bit command (9 STEP)
＊ ＊ ＊
FLD※
Flag signal: none
: data source device 2.
2
Conditions for
Activation
S S
=
1 2
S S
>
1
S S
<
1
S S
≠
1
S S
≤
1
S S
≥
1
X1
F1.2
754
－ －
Continuous
－
execution type
and S . Taking "FLD=" as an
1 2
Conditions for
Inactivation
S S
≠
1 2
S S
≤
2 1 2
S S
≥
2 1 2
S S
=
2 1 2
S S
>
2 1 2
S S
<
2 1 2
SET Y21
－
－