Siemens Simatic S7 Series

PLC concepts
4.2 Accessing data
S7-200 SMART
72 System Manual, 09/2015, A5E03822230-AC
Note
When modifying the
value of a pointer, remember to adjust for the size of the data that you
are accessing: to access a byte, increment the pointer value by 1; to access a word or a
current value for a timer or counter, add or increment the pointer value by 2; and to access a
double word, add or increment the pointer value by 4.