Siemens Addressing Concept
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Addressing concept of siemens PLC : Byte .Bit addressing
Hardware Bit Addressing:
Input Address:
% I: 0.0 -------% PREFIX : BYTE.BIT
Output Address:
% O: 0.0 -------% PREFIX : BYTE.BIT
Memory Addressing:
Bit Memory Address:
% M 0.0 -------% PREFIX : BYTE.BIT
Byte Memory Address:
% MB0 -------% PREFIX : BYTE
Word Memory Address:
% MW0 -------% PREFIX : WORD
Doubleword Memory Address:
% MD0 -------% PREFIX : DWORD
ADDRESSING:
1BIT=4NIBBLE
8BIT=2NIBBLE=1BYTE
16BIT=4NIBBLE=2BYTE=1WORD
32BIT=8NIBBLE=4BYTE=2WORD=1DOUBLEWORD
Timer Addressing:
Define Address:
% T:0 -------% PREFIX : NUMBER
Counter Addressing:
Define Address:
% C:0 -------% PREFIX : NUMBER
