Rockwell-automation 1775-KA PLC-3 Communication Adapter Module User Ma Instrukcja Użytkownika Pobierz pdf (Strona 64)

Addressing Rules and Examples

Chapter 4

48

For PLC–3 timer and counter files, it is important to note that the data

words are stored in the following order:

CTL PRE ACC

That is, the control, preset, and accumulated values for a given timer or

counter are stored as consecutive words in the same file.

Addressing a Word Range

To address a range of words in PLC–3 memory, use one of the following

formats:

Figure 4.5 is an example of addressing a range of PLC–3 words.

Figure 4.5

Example

of Addressing a Range of PLC-3 W

ords

$N 15 : 0, 20

Number of words to

Delimiter

Address of first word

be transferred

to be transferred.

10022-I

You may use a word range only as the source field in an assignment

command. The destination must be a file that is as large as, or larger than,

the source range.

Addressing a Word

To address a single word in PLC–3 memory, use one of the following

formats:

1 2 ... 59 60 61 62 63 64 65 66 67 68 69 ... 238 239

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Rockwell-automation 1775-KA PLC-3 Communication Adapter Module User Ma Instrukcja Użytkownika Strona 64