Relays, Memory Areas and Constants
1-44
1.3 Explanation of Memory Areas
1.3.1 Data Register (DT)
Function of data registers (DT)
Data registers are memory areas which are handled in word (16−bit) units, and are used
to store data such as numerical data configured of 16 bits.
DTn
Bit position
15
000
1211
0
8
0
7
00
43
0
0
·········
11 1 1 11 00
Example of a program which writes a numeric value to DTn.
F0, MV, K0,DTn
Decimal constant (K) or
hexadecimal constant (H)
When 32-bit (double word) data is handled in data registers, use two data registers as
a set. The number of the data register for the lower 16 bits is specified.
higher 16-bit area lower 16-bit area
DTn+1
DTn
0100 0 0 0 001 00 0 0 0 0 011 11 111 111000 00
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