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Arithmetic instructions
F45_BSUB
Subtracts the 4-digit BCD equivalent constant or 16-bit area for 4-digit BCD data specified by s
Description
from the 16-bit area for 4-digit BCD data specified by d if the trigger EN is in the ON-state. The
result is stored in d.
Example value 16#2111 (BCD)
Bit
15 . . 12 10 . . 8 7 . . 4 3 . . 0
d
16# (BCD)
Example value 16#0011 (BCD)
Bit
15 . . 12 10 . . 8 7 . . 4 3 . . 0
s
16# (BCD)
Trigger: ON
Result value 16#2100 (BCD)
Bit
15 . . 12 10 . . 8 7 . . 4 3 . . 0
d
16# (BCD)
This instruction also exists as a P instruction (for FP2/2SH, FP3/5, FP10/10SH PLC types), which
is only executed at the rising edge of the EN trigger. Select [Insert P instruction] from the
"Instructions" pane if you require a P instruction. To facilitate reuse, the instruction then appears
under "Recently used" in the pop-up menu. Press <Ctrl>+<Shift>+<v> within the programming
area to open the list of recently used elements.
Availability of F45_BSUB (see page 1325)
PLC types
Data types
Variable
Data type
WORD
s
WORD
d
Operands
For
WX
s
-
d
374
4-digit BCD subtraction
0 0 1 0
0 0 0 1
0 0 0 1
0 0 0 1
2
1
1
0 0 0 0
0 0 0 0
0 0 0 1
0 1 0 1
0
0
1
0 0 1 0
0 0 0 1
0 0 0 0
0 0 0 0
2
1
0
Function
subtrahend, 16-bit area for 4-digit BCD data or equivalent
constant
minuend and result, 16-bit area for 4-digit BCD data
Relay
T/C
WY
WR
WL
SV
WY
WR
WL
SV
1
1
0
Register
EV
DT
LD
FL
EV
DT
LD
FL
Constant
dec. or hex.
-
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