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Arithmetic instructions
F48_DBSUB2
Subtracts the 8-digit BCD equivalent constant or 8-digit BCD data specified by s2 from the 8-digit
Description
BCD equivalent constant or 8-digit BCD data specified by s1 if the trigger EN is in the ON-state.
The result is stored in d.
Example value 16#33555588 (BCD)
Bit
31 . . 28 27 . . 24 23 . . 20 19 . . 16
s1
16# BCD
Example value 16#00110022 (BCD)
Bit
31 . . 28 27 . . 24 23 . . 20 19 . . 16
s2
16# BCD
Trigger: ON
Result value 16#33445566 (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 F48_DBSUB2 (see page 1325)
PLC types
Data types
Variable
Data type
DWORD
s1
DWORD
s2
DWORD
d
380
8-digit BCD subtraction, destination can be specified
0 0 0 1
0 0 1 0
0 1 0 1
0 1 0 1
3
3
5
0 0 0 0
0 0 0 0
0 0 0 1
0 0 0 1
0
0
1
0 0 1 1
0 0 1 1
0 1 0 0
0 1 0 0
3
3
4
Function
minuend, 32-bit area for 8-digit BCD data or equivalent
constant
subtrahend, 32-bit area for 8-digit BCD data or equivalent
constant
result, 32-bit area for 8-digit BCD data
15 . . 12 10 . . 8 7 . . 4 3 . . 0
0 1 0 1
0 1 0 1
1 0 0 0
5
5
5
32-bit area
15 . . 12 10 . . 8 7 . . 4 3 . . 0
0 0 0 0
0 0 0 0
0 0 1 0
1
0
0
15 . . 12 10 . . 8 7 . . 4 3 . . 0
0 1 0 1
0 1 0 1
0 1 1 0
4
5
5
1 0 0 0
8
8
0 0 1 0
2
2
0 1 1 0
6
6
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