Delta VFD11AMS21AFSHA, User Manual

Page: 387 / 445

Chapter 16 PLC Function Applications

MS300
(High Speed Model)
16-56
API
MUL
S1 S2 D BIN multiplication
22
D P
Bit device Word device
16-bit command (7 STEP)
MUL Continuous
execution type
MULP Pulse
execution type
32-bit command (13 STEP)
DMUL Continuous
execution type
DMULP Pulse
execution type
Flag signal: none
X Y M K H KnX KnY KnM T C D
S1 ＊ ＊ ＊ ＊ ＊ ＊ ＊ ＊
S2
＊ ＊ ＊ ＊ ＊ ＊ ＊ ＊
D
＊ ＊ ＊ ＊ ＊
Notes on operand usage:
The 16-bit command operand D will occupy 2 consecutive points

S1
: Multiplicand.
S2
: Multiplier.
D
: Product.
 Using two data sources: When
S1
and
S2
are multiplied using the BIN
method, the product is stored in
D
.
16-bit BIN multiplication operation:
S1
D
b15..........b0
X
b15..........b0
S2
=
b31..........b16b15..............b0
D +1
b15 is a symbol bit b15 is a symbol bit
b31 is a symbol bit (b15 of D+1)
Symbol bit = 0 refers to a positive value.
Symbol bit = 1 refers to a negative value.
When
D
is a bit device, K1-K4 can be designated as a hexadecimal number,
which will occupy 2 consecutive units.
 When 16-bit DO is multiplied by 16-bit D10, the result will be a 32-bit product; the
upper 16 bits will be stored in D21, and the lower 16 bits will be stored in D20.
Whether the bit at the farthest left is Off or On will indicate the sign of the result.
X0
D0 D10
D20 MUL
D0 D10 K8M0
MUL