Rockwell Automation 1775-KA PLC-3 Communication Adapter Module User Manual - Manual (Page 66)

Addressing Rules and Examples
Chapter 4
4Ć10
Figure 4.6
Example of Addressing Specific Bits in PLC-3 Memory
@FILE_A:16/8
<
Bit number 8 (decimal)
Delimiter
Word offset from bewginning of file
Delimiter
Symbolic address of file
10023-I
$B1:5/012
<
Bit number 8 (decimal)
Delimiter
Logical word address
The PLC and PLC–2 processors use logical data addresses. These
addresses are usually specified as octal numbers. However, the 1775–KA
module interprets these addresses as decimal numbers unless they contain
leading zeros (section titled Number Systems). Therefore, if you want to
specify a PLC or PLC–2 word address as an octal number, begin the
number with a 0(zero).
Addressing a Word Range
To address a range of words in PLC or PLC–2 memory, use this format:
<offset>,<size>
Figure 4.7 illustrates this addressing format
You may use a word range only as the source field in an assignment
command.
PLC/PLC-2 Address
Specifications