Siemens SINUMERIK 840D sl Configuration Manual page 146

Configuring telegrams and drive units
6.9 Deviations from the standard I/O addressing schematic
Basic procedure
Release suitable I/O addresses
Check whether you can release suitable address space with one of the following procedures:
● If the associated addresses are PROFIsafe addresses, zoom the process image of the OB1
in the PLC properties under "Cycle".
● Check which device is occupying the required address range. You may be able to assign a
different address space to this device in order to release the required I/O addresses.
● Release address space directly by removing empty space that is not required between
different I/O addresses and adapting the I/O addresses of the relevant device.
Assign suitable I/O addresses
You must then assign suitable I/O addresses to the relevant devices in the TIA Portal.
Devices without suitable I/O addresses are displayed as follows:
● Select the appropriate component (SINAMICS Integrated or NX), then click "Telegram
configuration" in the "Properties" inspector window.
Cells with unsuitable I/O addresses are highlighted in red.
● If a message showing which I/O addresses were not available has already been displayed,
you can view these in the "Info" inspector window at "General".
Align the I/O addresses with the machine data of the NCU
Finally, enter the assignment of the I/O address different to the default scheme in the machine
data of the NCU. Refer to Adapting I/O start addresses (Page 133) to find the machine data in
which you must align the corresponding I/O address.
See also:
● Online help of SINUMERIK Operate
● Commissioning Manual, "Commissioning CNC: NCK, PLC, Drive", Section Communication
between NC and drive
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SINUMERIK STEP 7 Toolbox V15.1
Configuration Manual, 12/2018, A5E46279635B AA