Data traffic
6.3 Acyclic data traffic
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measuring device used.
An overview of these manuals is provided in chapter Further documentation (Page 9).
Note
Maximum length of the data structures for read/write access
The data structures that you want to read/write access may have a maximum length of
240 bytes.
Use of flexible data access with a SIMATIC S7 controller
You can find an example of an application for using flexible data access in the PLC programs
of a SIMATIC S7 controller and the blocks associated with it in an FAQ at Internet
https://support.industry.siemens.com/cs/ww/en/view/109765658
Use of flexible data access with a PG/PC
You can execute the read and write accesses to the data sets of the SENTRON devices defined
in chapters DS47 data set for flexible read access (Page 48), DS48 data set for flexible write
access (Page 49) and DS207 data set for flexible logbook access (Page 58) by means of an
application program from any PG/PC with a PROFINET IO interface.
You can find a detailed description of how to integrate the program in your PG/PC in the
following documents on the Internet:
•
SIMATIC NET System Manual: PC Software – Industrial Communication with PG/PC Volume
1 – Basics (
https://support.industry.siemens.com/cs/ww/en/view/77376110
•
SIMATIC NET Programming Manual: PC Software – Industrial Communication with PG/PC
Volume 2 – Interfaces (
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