Deviations From The Standard I/O Addressing Schematic; Overview; Matching Of Deviating I/O Addresses; Matching I/O Addresses For Use Of The Optimized I/O Addressing Schematic - Siemens SINUMERIK 840D sl Configuration Manual

Configuring telegrams and drive units

6.9 Deviations from the standard I/O addressing schematic

6.9 Deviations from the standard I/O addressing schematic
6.9.1

Overview

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, the I/O addresses
in the TIA Portal must be aligned with the I/O addresses in the machine data of the NCU
(Page 143).
● 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 145).
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.
See also
Matching I/O addresses for use of the optimized I/O addressing schematic (Page 142)
Changing the addressing schematic (Page 118)
6.9.2

Matching of deviating I/O addresses

6.9.2.1

Matching I/O addresses for use of the optimized I/O addressing schematic

If you use the optimized I/O addressing schematic, you must activate it in TIA Portal and you
must enter the I/O addresses in the machine data, e.g. via SINUMERIK Operate.
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SINUMERIK STEP 7 Toolbox V15.1
Configuration Manual, 12/2018, A5E46279635B AA