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Part 2 Startup Chapter
(5) Setting the I/O data consistency
Under the normal settings, consistency of I/O data is assured in units of words or bytes for in the case of a PROFIBUS
system. It is important that the command area be read and written in a manner maintaining consistency between the
command codes and parameters.
To access data consistently, consistency parameters must be set in HW Config and SFC14 or SFC15 must be used to
access data.
With command-related FBs, SFC14 or 15 is used to access the first five words in the command area.
Accordingly, consistency parameters must be set for the I/O area data corresponding to these five words, as explained in
the example below.
Double-click or select
Object
Properties
in the pull-down
menu.
Set “Total length,” not a unit (Byte or
Word), under “Consistent over.”
Содержание RoboNet
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