Mitsubishi FX1S Series

FX Series Programmable Controlers Applied Instructions 5
5-31
5.3.2 SUB (FNC 21)
Operation: (Applicable to all units)
The data contained within the source device, S
2 is
subtracted from the contents of source device S
1.
The result or remainder of this calculation is stored
in the destination device D.
Note: the ‘Points to note’, under the ADD instruction (previous page) can also be similarly
applied to the subtract instruction.
Mnemonic Function
Operands
Program steps
S
1 S2 D
SUB
FNC 21
(Subtract)
One source
device
is subtracted from
the other - the
result is stored in
the destination
device
K, H, KnX, KnY, KnM, KnS,
T, C, D, V, Z
KnY, KnM, KnS,
T, C, D, V, Z
SUB, SUBP:
7steps
DSUB,
DSUBP:
13 steps
When using M8023 to subtract floating point
data, only double word (32 bit) data registers
(D) or constants (K/H) may be used. See page
4-46 for more details regarding floating point
format.
FX 1S
FX 1N FX 2N
FX 2NC
PULSE-P 16 BIT OPERATION 32 BIT OPERATION
Flags
Zero M8020
Borrow M8021
Carry M8022
X0
SUB D 10 D 12
[ S1 ] [ D ]
D 14
[ S2 ]