Bit-shift instructions
576
Part III FP Instructions
F111_WSHL
Left shift of one word (16 bits) of 16-bit data range
When one word (16 bits) is shifted to the left, the ending word is shifted out and the data in the
starting word becomes 0.
D2
0
D1
D2 D1
Specified data range
The ending word
is shifted out
The data in the starting
word becomes 0
d1 and d2 should be:
the same type of operand
d1 d2
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 F111_WSHL (see page 1320)
Variable Data type Function
d1 starting 16-bit area
d2
ANY16
ending 16-bit area
The variables d1 and d2 have to be of the same data type.
For Relay T/C Register Constant
d1, d2 - WY WR WL SV EV DT LD FL -
Description
Shifts one word (16 bits) of the data range specified by d1 (starting) and d2 (ending) to the left (to
the higher word address) if the trigger EN is in the ON-state.
Data types
Operands
Example
In this example, the same POU header is used for all programming languages. For an example
using IL (instruction list), please refer to the online help.
POU header