Replacing A Device Or Upgrading Firmware; Replacing The Ncu; Replacing An Nx - Siemens SINUMERIK 840D sl Configuration Manual

3.3

Replacing a device or upgrading firmware

3.3.1

Replacing the NCU

You can replace different NCUs. By replacing a device within the same device family, you can
change to another NCU with a different expansion stage, with a different firmware version and
other properties.
Rules for replacing an NCU
● It is not possible to replace an NCU with another controller of a different device family.
(You may be able to perform a migration.)
● It is not possible to replace an NCU with an NCU of the same project stage with the same
or previous firmware version.
● If you replace an NCU by another NCU, then automatically all of the integrated
subcomponents of the NCU (SINAMICS Integrated, PLC, NCK, CP, HMI) are also replaced.
● If you have connected NX modules to an NCU and replace the NCU, the connection
between the devices remains, provided the used interfaces exist on both NCUs. If the used
interface on the replaced NCU does not exist, the connection will be separated.
3.3.2

Replacing an NX

You can replace a device with a different NX type. The version of an NX is determined by the
version of the NCU. Correspondingly, for a connected NX, you can only replace the type: An
NX10.3 can be replaced by an NX15.3 and vice versa.
Rules for replacing an NX
If you replace NX10.3 with NX15.3, please note that NX10.3 only supports a maximum of three
servo axes, whereas NX15.3 supports up to six servo axes.
For more information about the configuration of the drive objects, see Adapting the number of
drives (Page 129)
SINUMERIK STEP 7 Toolbox V15.1
Configuration Manual, 12/2018, A5E46279635B AA
3.3 Replacing a device or upgrading firmware
Configuring the NCU
33