Siemens EF 83H Series Manual de usuario descargar pdf (Pagina 164)

Reference Data

A-10

SIMATIC 505 PROFIBUS-FMS CP User Manual

Mapping of FMS Variables onto 505 Memory (continued)

Figure

A-3

shows how variable arrays are mapped in SIMA

TIC 505 memory

12345678910111213141516

******

Array[10]

of Boolean

array of Boolean is rounded up to an even byte length, but the extra bits are not transferred.

12345678910111213141516

Array[2]

of Integer16

12345678910111213141516

Array[3] of Unsigned8

odd-length array of Unsigned8 is rounded up to an even length, but the extra byte is not

transferred.

12345678910111213141516

Array[2] of Octet String5

odd-length Octet String is treated as the next larger even-length Octet String.

X1 X1

Note:

represents bits or bytes skipped for alignment purposes. When the variable array is

read, this data is not transmitted; when the array is written, this data is written to the value 0.

X represents data values.

X2X3X4X5X6X7X8 X9X10

X2 X2

12345678910111213141516

05 05

X1 X1

Array[2] of V

isible String5

The

FMS CP does not allow the use of this data type in the definition of a local variable; however

data

of this type can be transferred to and from a

remote station if that station uses this data type.

05 05

X2 X2

12345678910111213141516

******

Array[4]

of Boolean

Boolean array of 4 requires two bytes (one word), but the extra bits are not transferred.

X2X3X4

**** **

Figur

e A-3

Mapping

of V

ariable Arrays in 505 Memory

ariable Arrays

1 2 ... 159 160 161 162 163 164 165 166 167 168 169 ... 186 187

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Siemens EF 83H Series Manual de usuario Pagina 164

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