Omron SYSMAC CVM1 Series Operation Manual page 246

Conversion Instructions
Digit Designator Examples
Example 1
Example 2
Example 3
Di Word Contents
Word S+2
Leftmost 8 bits
Parity
Example
$31
1 0 1 1 0 0 0 1
Even number of "1" bits
228
The following examples show the digit designators (Di) used to make various
multiple-word conversions.
Di Word Contents
0 1 1 2
Word S+1
Leftmost 8 bits
Di Word Contents
0 0 3 0
Word S+1
Leftmost 8 bits
0 1 3 1
Rightmost 8 bits Leftmost 8 bits
Digit 3
0: None
With no parity, data can only be converted when the leftmost bit is zero. If it is not
set to zero, the Error Flag will turn ON and the data will not be converted.
1: Even
The data (8 bits) can only be converted when the number of "1" bits is even. If the
number is odd, the Error Flag will turn ON and the data will not be converted.
"1"
Conversion
executed.
Rightmost 8 bits Leftmost 8 bits
Digit 3 Digit 2 Digit 1 Digit 0
Rightmost 8 bits Leftmost 8 bits
Digit 3 Digit 2 Digit 1 Digit 0
Word S+1
Rightmost 8 bits Leftmost 8 bits
Digit 2 Digit 1 Digit 0
0 0 1 1 0 0 0 1
Odd number of "1" bits
Section 5-17
Word S
Rightmost 8 bits
Word D
Word S
Rightmost 8 bits
Word D
Word S
Rightmost 8 bits
Word D
Not converted.
Conversion
executed.