Omron SRM1 - PROGRAMING 02-2001, Руководство по программированию

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7-20 Section Conversion Instructions
442
7-20-5 4-TO-16 DECODER – MLPX(76)
S : Source word
IR, SR, AR, DM, HR, TC, LR
Di : Digit designator
IR, SR, AR, DM, HR, TC, LR, #
Ladder Symbols
Operand Data Areas
R : First result word
IR, SR, AR, DM, HR, LR
MLPX(76)
S
Di
R
@MLPX(76)
S
Di
R
The rightmost two digits of Di must each be between 0 and 3.
All result words must be in the same data area.
DM 6144 to DM 6655 cannot be used for R.
When the execution condition is OFF, MLPX(76) is not executed. When the
execution condition is ON, MLPX(76) converts up to four, four-bit hexadecimal
digits from S into decimal values from 0 to 15, each of which is used to indicate a
bit position. The bit whose number corresponds to each converted value is then
turned ON in a result word. If more than one digit is specified, then one bit will be
turned ON in each of consecutive words beginning with R. (See examples, be-
low.)
The following is an example of a one-digit decode operation from digit number 1
of S, i.e., here Di would be 0001.
Source word
First result word
C
0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0
Bit C (i.e., bit number 12) turned ON.
The first digit and the number of digits to be converted are designated in Di. If
more digits are designated than remain in S (counting from the designated first
digit), the remaining digits will be taken starting back at the beginning of S. The
final word required to store the converted result (R plus the number of digits to be
converted) must be in the same data area as R, e.g., if two digits are converted,
the last word address in a data area cannot be designated; if three digits are con-
verted, the last two words in a data area cannot be designated.
The digits of Di are set as shown below.
Specifies the first digit to be converted (0 to 3)
Number of digits to be converted (0 to 3)
0: 1 digit
1: 2 digits
2: 3 digits
3: 4 digits
Not used (Set to zero)
Digit number: 3 2 1 0
Limitations
Description
Digit Designator