257
FX3G/FX3U/FX3UC Series Programmable Controllers
Programming Manual - Basic & Applied Instruction Edition
9 Move and Compare – FNC 10 to FNC 19
9.2 FNC 11 – ZCP / Zone Compare
1
Introduction
2
Overview
3
Instruction
List
4
Devices
in Detail
5
Specified the
Device &
Constant
6
Before
Programming
7
Basic
Instruction
8
FNC00-FNC09
Program Flow
9
FNC10-FNC19
Move & Compare
10
FNC20-FNC29
Arith. & Logic
Operation
Explanation of function and operation
1. 16-bit operation (ZCP and ZCPP)
The lower comparison value and upper comparison value are compared with the comparison
source . According to the result (smaller, within zone or larger), either one among , +1 and
+2 turns ON.
• Comparison is executed algebraically. Example: −10 < 2 <10
2. 32-bit operation (DZCP and DZCPP)
The lower comparison value [ +1, ] and upper comparison value [ +1, ] are compared
with the comparison source [ +1, ]. According to the result (smaller, within zone or larger), either
one among , +1 and +2 turns ON.
• Comparison is executed algebraically. Example: −125400 < 22466 < 1015444
S
1
S
2
S
D
D
D
FNC 11
ZCP
Even if the command input turns OFF and ZCP instruction is not executed, , +1 and +2 latch
the status just before the command input turns OFF from ON.
Command
input
S
1
S
2
S
D
D
+1
D
+2
D
D
D
D
Turns ON in the case of
S
S
2
>
] "." [
Turns ON in the case of
S
1
≤
S
S
2
≤
] "." [
Turns ON in the case of
S
1
>
S
] "." [
S
1
S
1
S
2
S
2
S
S
D
D
D
FNC 11
DZCP
Even if the command input turns OFF and ZCP instruction is not executed, , +1 and +2 latch
the status just before the command input turns OFF from ON.
Command
input
S
1
S
2
S
D
D
+1
D
+2
D
D
D
D
Turns ON in the case of
+1,
S
S
]
>
+1,[
S
2
S
2
] "." [
≤
Turns ON in the case of
+1,[
S
S
]+1, ]
S
1
S
1
≤
+1,[
S
2
S
2
] "." [
>
Turns ON in the case of
+1,[
S
S
+1, ]
S
1
S
1
] "." [
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