Mitsubishi Electric MELSEC FX3U Programming Manual page 511

FX /FX /FX Series Programmable Controllers
3G 3U 3UC
Programming Manual - Basic & Applied Instruction Edition
Explanation of function and operation
1. 32-bit operation (DEZCP and DEZCPP)
The comparison values [
[ +1,
S S
according to the result (smaller, same or larger).
• When a constant (K or H) is specified as [
automatically converted into binary floating point when the instruction is executed.
Command
input
D
D
D
Even if the command input turns OFF and DEZCP instruction is not executed,
before the command input turned OFF.
Cautions
1. Number of occupied devices
Three devices are occupied from
Make sure that these devices are not used for any other purpose.
2. Comparison values [
Make sure that two comparison values have the following relationship:
] ≤ [
[ +1,
S S
1 1
In the case of "[
] value during comparison.
S
1
+1, ], [
S S
1 1
] as floating point data, and either bit among
FNC 111
S S
1 2
EDZCP
Turns ON in the case of
" [
+1, ]
S S
1 1
Turns ON in the case of
+1
" [ +1, ]
S S
1 1
Turns ON in the case of
+2
(
D D
+1, ] and [
S S
1 1
+1, ]
S S
2 2
] > [
+1, +1,
S S S
1 1 2
18.2 FNC111 – EZCP / Floating Point Zone Compare
+1, ] are compared with the comparison source
S S
2 2
D
+1, ], [ +1,
S S S
1 1 2
S D
> ] ".
[ S +1,
S
≤ ≤
[ S +1, ] [ S +1,
S
2
" [ +1, ] > [ S +1,
S S
2
, +1 and +2).
D D
+1, ]
S S
2 2
]", the value [
S S
2 2
18 Floating Point – FNC110 to FNC139
, +1, and +2 turns ON
D D
], or [ +1,
S S S
2
] ".
S
2
] ".
S
2
D D
to +2 hold the status
+1, ] is regarded as [
S
2
11
12
], it is
13
14
15
16
+1,
S
1
17
18
19
20
509