File_a:16/8 – Rockwell Automation 1775-S5_SR5,D17756.5.5 User Manual PLC-3 FAMILY I/0 User Manual

Page 81

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Addressing DH and DH+ Data Transfers

Chapter 5

5-7

Refer to the PLC-3 Family Controller Programming Manual (publication
1775-6.4.1) for detailed information on extended addressing.

Addressing a Bit

To address a specific bit within a word, use one of the following formats:

Format:

Example:

wordaddr/bit

$N0:47/015

filesym:offset/bit

@FILE_A:15/8

wordsym/bit

@WORD_1/012

Figure 5.5

Examples for Addressing Specific Bits in PLCĆ3 Memory

@FILE_A:16/8

11237

$B1:5/012

Bit number 8 (decimal)
Delimiter
Word offset from beginning of file
Delimiter
Symbolic address of file

Bit number 12 (octal)
Delimiter
Logical word address

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