Rockwell Automation 57C610 Enhanced Basic Language, AutoMax - Manual (Page 100)

7Ć12
places to the left. (Bit 15, or bit 31 if double integer, comes off the
end). The binary places vacated by the shift are filled with zeros.
For example:
LSBITS_0_4% = SHIFTL%(INPUT_CARD%,12) AND 0F000H
In this example, a 16Ćbit value is read from an input module. The
least significant group of 4 bits (bits 0 to 3) are shifted to the left into
the most significant position. The remaining lower bits are masked
off by anding" with hex value 0F000.
7.29 SHIFTR% Function
Format:
SHIFTR%(variable,shift_count)
where:
variable is a single or double integer variable.
shift_count is the number of bit positions to shift the integer
expression (0 to 15 for single integer; 0 to 31 for double integer).
This function returns an integer value equal to the integer expression
that was input, shifted the specific number of binary places to the
right. Bit 0 comes off the end. The result is not sign extended but
treated as a logical shift.
For example:
DECADE_2% = SHIFTR%(INPUT_CARD%,4) AND 0FH
In this example, a 16Ćbit value is read from an input module. The
second group of 4 bits (bits 4 to 7) are shifted to the right into the
least significant position. The remaining upper bits are masked off
by anding" with hex value OF.
7.30 ROTATEL% Function
Format:
ROTATEL%(variable, rotate_count)
where:
variable is a single or double integer variable or expression.
rotate_count is the number of bit positions to rotate the integer
expression (0 to 15 for single integer; 0 to 31 for double integer).
This function returns an integer value, equal to the integer
expression that was input, rotated the specific number of binary
places to the left (Bit 15, or bit 31 if double integer, wraps around to
bit 0).
For example:
MOVE_3_4% = ROTATEL%(INPUT_CARD%,4)
In this example, a 16Ćbit value is read from an input module and bits
(0 to 11) are rotated into the most significant bit positions (4 to 15).
Bits (12 to 15) are rotated into bit positions (0 to 3).