Without accounting and long loyalty check it is impossible to download from Siemens site.
Downloaded from the Siemens website and distributed in the original form of self-extracting archives ... which, accordingly, will require at least some space for unpacking ...

Add. Information: for yourself, put the Professional version
Installation procedure https://support.industry.siemens.com/cs/document/109758794/delivery-release-tia-portal-v15-1
new S7-1500R, S7-1500H

Now comes 2 types of complete installers,
which include the full version of STEP 7 Professional and a choice of Visualization:
WinCC Advanced for all panels = WinCC Flexible = Basic / Comfort / Advanced
WinCC Professional for all panels and computer = analog WinCC Flexible + analog WinCC *. *
Select the options during the installation process and activate manually with the keys corresponding to the EKB.

Please note the following change regarding the installation of STEP 7:
Setup for STEP 7 Professional / WinCC Advanced Engineering
The products STEP 7 Basic / Professional and WinCC Basic / Comfort / Advanced are installed via a common setup with the functional scope of STEP 7 Professional and WinCC Advanced.
Setup for STEP 7 Professional / WinCC Professional Engineering
The products STEP 7 Basic / Professional and WinCC Professional are installed via a common setup with the functional scope of STEP 7 Professional and WinCC Professional (include WinCC Advanced for panels).
The functionality of the corresponding editions is activated via the license key.и проверить целостность своих файлов
Siemens provides the software products below as trial versions for the TIA Portal V15.1.
Trial version is FULL version. For untrial need install EKB only.


Year / Release Date: 10/2018
Version: 15.1
Developer: https://dfpd-forum.siemens.ru/
Developer site: support.industry.siemens.com/cs/document/109758794/delivery-release-tia-portal-v15-1
Digit capacity: 64bit
Interface language: Multilingual (Russian is absent)
Tabletka: the keys for v15.0 / keys for v15.0 are valid Sim_EKB_Install_2018_10_30 http://rutracker.org/forum/viewtopic.php?t=5572061

System requirements: 64 GB on the hard drive for full distribution.
Hardware Recommendation
Computer
As of SIMATIC Filed PG M5 Advanced (or comparable PC) Processor Intel® Core ™ i5-6440EQ (up to 3.4 GHz)
RAM 16 GB or more (32 GB for large projects)
and on i3 with 4 GB Portal starts ...
Portal is launched ...
The portal is gradually being launched ...