Basic Function Instruction
6-32
FUN 15 D P
（＋1）
INCREMENT
(Adds 1 to the D value)
FUN 15 D P
（＋1）
Operand
D : The register to be increased
D may combine with V, Z, P0~P9 to serve
indirect addressing
WY WM WS TMR CTR HR OR HR HSCR RTCR SR ROR DR XR Range
Ope-
rand
WY0
∣
WY240
WM0
∣
WM1896
WS0
∣
WS984
T0
∣
T255
C0
∣
C255
R0
∣
R3839
R3904
∣
R3919
R3920
∣
R4047
R4096
∣
R4127
R4128
∣
R4135
R4136
∣
R4167
R5000
∣
R8071
D0
∣
D4095
V 、 Z
P0~P9
D ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○* ○* ○
○
● Adds 1 to the register D when the increment control input "EN" =1 or "EN↑" ( P instruction) from 0 to 1. If
the value of D is already at the upper limit of positive number 32767 or 2147483647, adding one to this
value will change it to the lower limit of negative number -32768 or -2147483648. At the same time, the
overflow flag FO0 (OVF) is set to 1.
Example 16-bit increment register
Ladder diagram Key operations Mnemonic code
X0
EN
15.
(+1) R 0V
OVF
ORG
ORG TU X 0
FUN 15
D : R 0V
When V＝100，0＋100＝100
D
R100 1
Ø
X0＝
D
R100 2
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