Programming
2.8 Operators
Expanding the user interface
Commissioning Manual, 11/2006, 6FC5397-0DP10-0BA0
2-113
Example
PRESS(VS1)
VAR01 = 16 SHL 2 ; Result = 64
VAR02 = VAR02 SHL VAR04 ; Convert content of VAR02 to 32-bit unsigned, and
shift content to left by number of bits specified
in VAR04. Then convert 32-bit value back to
format of variable VAR02.
END_PRESS
SHR operator
Bits are shifted to the RIGHT using the SHR (SHIFT RIGHT) function. You can specify both
the value to be shifted and the number of shift increments directly or via a variable. If the limit
of the data format is reached, the bits are shifted beyond the limit without displaying an error
message.
Use
Syntax: variable =
value
SHR
increment
Description: Shift Right
Parameters: value value to be shifted
increment number of shift increments
Example
PRESS(VS1)
VAR01 = 16 SHR 2 ; Result = 4
VAR02 = VAR02 SHR VAR04 ; Convert content of VAR02 to 32-bit unsigned,
and shift content to left by number of bits
specified in VAR04. Then convert 32-bit value
back to format of variable VAR02.
END_PRESS
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