Decrement (Fun16) - FATEK FBS Series Manual

FUN 16 D P
（－1）
Range WY
WY0
Ope-
∣
rand
WY240 WM1896
D
○
Description
Subtracts 1 from the register D when the decrement control input "EN" =1 or "EN↑" (
●
to 1. If the value of D is already at the lower limit of negative number -32768 or -2147483648, subtracting
one from this value will change it to the upper limit of positive number 32767 or 2147483647. At the same
time, the underflow flag FO0 (UDF) is set to 1.
Example
16-bit decrement register
Ladder diagram
X0
16P.
EN (-1)
(Subtracts 1 from the D value)
WM WS TMR CTR
WM0 WS0 T0 C0
∣ ∣ ∣ ∣
WS984 T255 C255
○ ○ ○ ○
R 0
UDF
D
D
DECREMENT
HR OR HR HSCR RTCR
R0 R3904 R3920 R4096
∣ ∣ ∣ ∣
R3839 R3919 R4047 R4127
○ ○ ○ ○
Key operations
ORG
R0 0

X0＝
R0
－1
6 - 3 3
Basic Function Instruction
Operand
D : The register to be decreased
D may combine with V, Z, P0~P9 to
serve indirect addressing
SR ROR DR
R4128 R4136 R5000 D0
∣ ∣ ∣ ∣
R4135 R4167 R8071 D4095
○ ○* ○* ○
P
instruction) from 0
Mnemonic code
ORG
FUN
D :
FUN 16 D P
（－1）
X R
V 、 Z
P 0 ~ P 9
○
X 0
16P
R 0