Siemens SINUMERIK 840D sl Configuration Manual page 184

Safety configuration
10.5 Availability of I/O addresses at the mode change
Figure 10-9 Address overview in the "Properties" inspector window of the PLC
Further information
Detailed information on aligning and configuring I/O addresses can be found in
Section Configuring telegrams and drive units (Page 115).
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SINUMERIK STEP 7 Toolbox V15.1
Configuration Manual, 12/2018, A5E46279635B AA