Example:
Symbolic addressing
Symbol addressing consists of letters, numbers and characters.
You can set the symbol of address by the following steps:
You can enter “start” as the address of I0.0
Indirect addressing
Indirect addressing uses pointer to access the data of memory. Pointer is a double
word.It contains the address of another memory location. Only V memory location, L
memory location or register accumulator (AC1, AC2, AC3) can be used as pointers.
PLC allows the pointer to access the following memory area ： I 、 Q 、 V 、 M 、 S 、 T 、
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