Mitsubishi Electronics FX3UC Benutzerhandbuch
281
FX
3S
/FX
3G
/FX
3GC
/FX
3U
/FX
3UC
Series
Programming Manual - Basic & Applied Instruction Edition
10 Arithmetic and Logical Operation (
+, −, ×, ÷) – FNC 20 to FNC 29
10.5 FNC 24 – INC / Increment
1
Introdu
ction
2
Ov
ervi
ew
ew
3
Instruction
Li
st
4
D
evices
in Det
ai
l
5
Specifi
ed the
De
vice
&
C
onst
ant
ant
6
Bef
ore
ore
Pr
og
ra
mmi
ng
ng
7
Bas
ic
ic
Instruction
8
FN
C00-FN
C00-FN
C0
9
Program Fl
ow
9
FNC
10-FN
C19
Mov
e & Com
e & Com
pare
10
FNC
20-FNC
29
Arith. & Lo
gi
c
Operati
on
10.5
FNC 24 – INC / Increment
Outline
This instruction increments the data of a specified device by "1".
1. Instruction format
2. Set data
3. Applicable devices
S
1: This function is supported only in FX
3G
/FX
3GC
/FX
3U
/FX
3UC
PLCs.
S
2: This function is supported only in FX
3U
/FX
3UC
PLCs.
Explanation of function and operation
1. 16-bit operation (INC and INCP)
The contents of
are incremented by "1", and the increment result is transferred to
.
2. 32-bit operation (DINC and DINCP)
The contents of [
+1,
] are incremented by "1", and the increment result is transferred to [
+1,
].
Cautions
1. Note that data is incremented in every operation cycle in a continuous operation type
instruction.
2. Flag operations
1) 16-bit operation
When "+32767" is incremented by "1", the result is "
−32768". Flags (zero, carry and borrow) are not activated at
this time.
2) 32-bit operation
When "+2,147,483,647" is incremented by "1", the result is "
−2,147,483,648". Flags (zero, carry and borrow) are
not activated at this time.
Operand type
Description
Data type
Word device number storing data to be incremented by "1"
16- or 32-bit binary
Oper-
and
Type
Bit Devices
Word Devices
Others
System User
Digit Specification
System User
Special
Unit
Index
Con-
stant
stant
Real
Number
Charac-
ter String
Pointer
X Y M T C S D .b KnX KnY KnM KnS T C D
R
U \G
V Z Modify K H
E
" "
P
S1
S2
DINC
DINCP
DINCP
Mnemonic
Operation Condition
P
FNC 24
INC
D
16-bit Instruction
3 steps INC
INCP
Mnemonic
Operation Condition
Continuous
Operation
Pulse (Single)
Pulse (Single)
Operation
32-bit Instruction
5 steps
Continuous
Operation
Pulse (Single)
Pulse (Single)
Operation
D
D
D
D
Command
input
FNC 24
INCP
+ 1
→
D
D
D
D
D
D
D
Command
input
FNC 24
DINCP
D
D
[ +1, ] + 1
→ [ + 1, ]
D
D
D