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Arithmetic instructions
F46_DBSUB
Subtracts the 8-digit BCD equivalent constant or 8-digit BCD data specified by s from the 8-digit
Description
BCD data specified by d if the trigger EN is in the ON-state. The result is stored in d.
Example value 16#23210044 (BCD)
Bit
31 . . 28 27 . . 24 23 . . 20 19 . . 16
d
16# BCD
Example value 16#00210011 (BCD)
Bit
31 . . 28 27 . . 24 23 . . 20 19 . . 16
s
16# BCD
Trigger: ON
Result value 16#23000033 (BCD)
Bit
31 . . 28 27 . . 24 23 . . 20 19 . . 16
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 F46_DBSUB (see page 1325)
PLC types
Data types
Variable
Data type
DWORD
s
DWORD
d
Operands
For
DWX DWY
s
d
376
8-digit BCD subtraction
0 0 1 0
0 0 1 1
0 0 0 1
0 0 0 1
2
3
2
0 0 0 0
0 0 0 0
0 0 1 0
0 0 0 1
0
0
2
0 0 1 0
0 0 1 1
0 0 0 0
0 0 0 0
2
3
0
Function
subtrahend, 32-bit area for 8-digit BCD data or equivalent
constant
minuend and result, 32-bit area for 8-digit BCD data
Relay
DWR
DWL
DSV
-
DWY
DWR
DWL
DSV
15 . . 12 10 . . 8 7 . . 4 3 . . 0
0 0 0 0
0 0 0 0
0 1 0 0
1
0
0
32-bit area
15 . . 12 10 . . 8 7 . . 4 3 . . 0
0 0 0 0
0 0 0 0
0 0 0 1
1
0
0
15 . . 12 10 . . 8 7 . . 4 3 . . 0
0 0 0 0
0 0 0 0
0 0 1 1
0
0
0
T/C
Register
DEV
DDT
DLD
DFL
DEV
DDT
DLD
DFL
0 1 0 0
4
4
0 0 0 1
1
1
0 0 1 1
3
3
Constant
dec. or hex.
-
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