Deviations From The Standard I/O Addressing Schematic; Overview - Siemens SINUMERIK 840D sl Configuration Manual

Configuring telegrams and drive units

5.9 Deviations from the standard I/O addressing schematic

5.9 Deviations from the standard I/O addressing schematic
5.9.1

Overview

Use of the optimized I/O addressing schematic
If you use the optimized I/O addressing schematic, you must activate it in TIA Portal
(Page 107) and you must enter the I/O addresses in the machine data, e.g. via SINUMERIK
Operate (Page 135).
Use of user-specific adaptations of an addressing schematic
In some cases when configuring in the TIA Portal, the preset default I/O addresses for the
communication with the drive have already been assigned, e.g.:
● If you added telegrams that are not part of the default telegram configuration.
● If you have subsequently changed the size of the process image.
● If you have subsequently changed the Safety Integrated mode.
● If you have subsequently added NX modules.
A message is then displayed in the TIA Portal, indicating that you must check the telegram
configuration. The actual procedure depends on whether suitable alternative I/O addresses
could be assigned:
● Suitable alternative I/O addresses have been assigned in the TIA Portal that do not match
the standard I/O addresses in the machine data of the NCU. In this case, you must align
the I/O addresses in the TIA Portal with the I/O addresses in the machine data of the
NCU (Page 136).
● There are not enough suitable I/O addresses available in the TIA Portal. In this case, you
must release suitable I/O addresses in the TIA Portal, re-assign them and then align them
with the I/O addresses in the machine data of the NCU. See: Availability of suitable I/O
addresses (Page 138).
If you do not want to make these settings at this time, and have not saved the project, you
can undo the changes: Click "Undo" in the toolbar.
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SINUMERIK STEP 7 Toolbox V14 SP1
Configuration Manual, 05/2017, A5E41846325