Shift and mask

Functions ► ET/MT-3x6, ET/MT-2x8 ► Scale ► Shift and mask

Can be programmed for:

only ET - / MT - 208 from SPSPlusWIN 5.4.1. onwards

This function can be programmed for an analogue variable.

With this function, you may shift a bit pattern allocated to this variable

a)	by n bits.

b)	to mask it with a bit pattern.

c)	or to shift it by n bits and to mask it with a bit pattern.

Dlg_FunctShiftandMask

The variable can have the following formats:

Byte

Integer

Unsigned integer

Long integer

Unsigned long integer

Function parameters:

Bits to shift

Number of bits by which the incoming value is to be shifted.

If the value = 0, no bits are shifted.

Bits to mask (decimal)

Decimal value with which the incoming value (or the value of the bit shift)

is to be masked (AND linked). If the value = 0 there will be no masking.

The following examples show the result and their binary actions

for the transferred value *1 for different actions and masking values:

	Decimal	Hex value	Binary
Original value *1	4095	0FFF	0000111111111111