Arithmetic instructions
400
Part III FP Instructions
F51_DBMUL
8-digit BCD multiplication, destination can be 11 specified
31 . . 28 27 . . 24 23 . . 20 19 . . 16 15 . . 12 10 . . 8 7 . . 4 3 . . 0
d
0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0
16# BCD
31 . . 28 27 . . 24 23 . . 20 19 . . 16 15 . . 12 10 . . 8 7 . . 4 3 . . 0
s
0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0
16# BCD
31 . . 28 27 . . 24 23 . . 20 19 . . 16 15 . . 12 10 . . 8 7 . . 4 3 . . 0
d array[0]
0 0 0 0 0 0 0 0 0 1 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 1 1 0
16# BCD
output_array[0]
31 . . 28 27 . . 24 23 . . 20 19 . . 16 15 . . 12 10 . . 8 7 . . 4 3 . . 0
d array[1]
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 1 0 0
16# BCD
output_array[1]
0 0 0 6 0 0 0 8
0 0 0 4 0 0 0 2
0 0 4 4 0 0 1 6
0 0 0 0 0 0 2 4
Bit
Example value 16#40002 (BCD)
Bit
32-bit area
Example value 16#60008 (BCD)
Bit
Bit
Result value 16#2400440016 (BCD) if trigger is ON stored in the ARRAY [0..1] of DWORD
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.
PLC types
Availability of F51_DBMUL (see page 1325)
Description
Multiplies the 32-bit BCD (8-digit) equivalent constant or 8-digit BCD data specified by s1 and the
one specified by s2 if the trigger EN is in the ON-state. The result is stored in the ARRAY d[0], d[1]
(64-bit area).
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