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MELSEC-Q
11 INSTRUCTIONS AND FUNCTIONS
The range of integers that can be expressed by 16 bits is from -32768 to 32767, which are
expressed in hexadecimal as follows.
If decimal values from -32768 to -1 are specified, it is assumed that values from
32768 to 65535 are specified.
Decimal
Hexadecimal
Binary
These are
the same.
65535
32768
32767
0
-1
-32768
FFFF
H
8000
H
7FFF
H
0000
H
FFFF
H
8000
H
1111
1111
1111
1111
1111
1111
1111
1111
1111
1111
0111
1111
1000
0000
0000
0000
1000
0000
0000
0000
0000
0000
0000
0000
to
to
to
to
to
to
to
to
to
Program Example
10 ' This program writes data to the specified bit
20 DIM A%(0)
:
' Defines an array
30 FOR I=1 TO 15 STEP 2
:
' Writes 1 in every second bit
40 WTSET I,0,A%(0)
50 NEXT I
60 FOR I=1 TO 15 STEP 2
:
' Writes 0 in every second bit
70 WTSET I,0,A%(0)
80 NEXT I
90 FOR I=0 TO 15
:
' Reads the data
100 A=RDSET(I,A%(0))
110 PRINT A;
:
' Displays the result
120 NEXT I
RUN
1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0
OK
REMARK
See the RDSET instruction.
