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HEIDENHAIN MANUALPLUS 620 Technical Manual

HEIDENHAIN MANUALPLUS 620
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January 2012 8.15 Command Set 1709
8.15.54 SHIFT LEFT (<<)
Syntax: << (SHIFT LEFT)
Operands: B, W, D, K
Action:
A SHIFT LEFT statement multiplies the content of the word accumulator by
two. This is done by simply shifting the bits in the accumulator by one place
to the left. The result must lie in the range of -2 147 483 648 to +2 147 483
647, otherwise the accumulator contains an undefined value. You define the
number of shifts through the operand. The control fills the right end of the
accumulator with zeros.
This statement is one of the arithmetic commands because it includes the
sign bit. For this reason, and to save time, you should not use this command
to isolate bits.
Example:
Shift the content of double word D8 four times to the left, then assign it to
double word D12.
Initial state:
Double word D8 = 3E 80 (hex)
Double word D12 = ?
Instead of using the << K+1 command four times, simply use the << K+4
command.
Function STL Accumulator
content
Operand content
Load the double word D8
into the word accumulator
L D8 3E80 3E80
Shift the content of the
word accumulator to the
left by the number of bits
that are specified in the
operand.
<< K+1 7D00
<< K+1 FA00
<< K+1 1F400
<< K+1 3E800
Assign the result to
double word D12.
= D12 3E800 3E800

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HEIDENHAIN MANUALPLUS 620 Specifications

General IconGeneral
CategoryControl Systems
DisplayColor LCD
Display Size10.4 inches
Resolution800 x 600 pixels
Spindle controlYes
Tool managementYes
HandwheelOptional
Input Voltage24 V DC
WeightApprox. 5 kg
Memory512 MB RAM
InterfacesEthernet, RS-232
Humidity10% to 90% non-condensing

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