Mitsubishi Electric MELSEC FX3U Programming Manual page 259

FX /FX /FX Series Programmable Controllers
3G 3U 3UC
Programming Manual - Basic & Applied Instruction Edition
Explanation of function and operation
1. 16-bit operation (ZCP and ZCPP)
The lower comparison value
source . According to the result (smaller, within zone or larger), either one among
S
+2 turns ON.
D
• Comparison is executed algebraically. Example: −10 < 2 <10
Command
input
D
D
D
Even if the command input turns OFF and ZCP instruction is not executed,
the status just before the command input turns OFF from ON.
2. 32-bit operation (DZCP and DZCPP)
The lower comparison value [
with the comparison source [
one among
D
• Comparison is executed algebraically. Example: −125400 < 22466 < 1015444
Command
input
FNC 11
DZCP
D
D +1
D
+2
Even if the command input turns OFF and ZCP instruction is not executed,
the status just before the command input turns OFF from ON.
and upper comparison value
S
1
FNC 11
S S
1 2
ZCP
Turns ON in the case of
>
" [ ] ".
S S
1
+1
Turns ON in the case of
≤ ≤
" [
S S
1
+2
Turns ON in the case of
>
" [
S
+1,
S S
1 1
+1,
S S
, +1 and +2 turns ON.
D D
S S S
1 2
Turns ON in the case of
" [ >
+1, ] [ S +1,
S S
1 1
Turns ON in the case of
≤
" [ +1, ] [ S +1,
S S
1 1
Turns ON in the case of
" [ +1,
S
9 Move and Compare – FNC 10 to FNC 19
S
2
S D
] ".
S
2
] ".
S
2
] and upper comparison value [
]. According to the result (smaller, within zone or larger), either
D
] ".
S
≤
] [ S +1, ] ".
S S
2 2
] > [ S +1, ] ".
S S
2 2
D
9.2 FNC 11 – ZCP / Zone Compare
are compared with the comparison
,
D D
, +1 and +2 latch
D D D
+1, ] are compared
S S
2 2
, D +1 and D +2 latch
1
+1 and
2
3
4
5
6
7
8
9
10
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