can't find snap7 library

[emrekocak1]

Hi,

I'm using conda env (coding with pycharm), windows 10, python 3.8 and try to connect s7-1200 plc. But i get a traceback with code below. `import time import snap7 from snap7 import util from db_layouts import rc_if_db_1_layout from db_layouts import tank_rc_if_db_layout

client = snap7.client.Client() client.connect('192.168.1.156', 0, 1) # IP, rack, slot`

Traceback:

Traceback (most recent call last): File "C:/Users/emrekocak/PycharmProjects/veri_toplama/main.py", line 8, in <module> client = snap7.client.Client() File "C:\Users\emrekocak\Anaconda3\envs\veri_toplama\lib\site-packages\snap7\client.py", line 38, in __init__ self.library = load_library() File "C:\Users\emrekocak\Anaconda3\envs\veri_toplama\lib\site-packages\snap7\common.py", line 54, in load_library return Snap7Library(lib_location).cdll File "C:\Users\emrekocak\Anaconda3\envs\veri_toplama\lib\site-packages\snap7\common.py", line 46, in __init__ raise Snap7Exception(msg) snap7.snap7exceptions.Snap7Exception: can't find snap7 library. If installed, try running ldconfig

[swamper123]

Have you installed snap7 (not the python-snap7) already? Have you read the installation notice from the docs?:

Windows

Download the zip file from the sourceforce page. Unzip the zip file, and copy releaseWindows<Win64/Win32>snap7.dll somewhere in you system PATH, for example C:WINDOWSsystem32. Alternatively you can copy the file somewhere on your file system and adjust the system PATH.

[emrekocak1]

First i install python-snap7 with pip. Then insalled the file from sourgeforge page and then added like in this picture. Is anything wrong here?

[swamper123]

To be honest, I neither understand that language, nor I recognise this window. =/

What I found, what perhaps helps, ist first this. It's windows 8.1, but I guess still a similar procedure. And also this, but check your versions (and perhaps different files).

[gijzelaerr]

make sure everything is consistently 64 or 32 bit.

[emrekocak1]

Now it shows me OSError. My python version is 64 bit. How can i install snap7 64 bit?

By the way at picture above is environment variables and it's windows 10, 64 bit.

[swamper123]

I found the window on my windows device, but I haven't snap7 installed. I am not sure if you have overwritten the whole PATH (this may cause problems then) already or if you edit (? I guess it's Düzenle in your window) and add the new path. The snap7.dll and *.lib files are already in the zip folder. Snap7-full-1.4.2->release->Windows->Win64. Alternatively someone mentioned here to copy these files into the Python install dir (see the picture of the post).

Like gijzelaerr mentioned, check if your Python version is 64 bit as well then.

[swamper123]

@emrekocak1 Did something work?

[gijzelaerr]

closing since no response, assuming the problem is solved.

[valewyss]

Snap7-VB6.zip did not work for me either, with similar error messages.

.... %1 ist keine zulassige Win32-Anwendung... “...%1 is not a valid Win32 application ...

Make sure you download the right file from sourceforge: https://sourceforge.net/projects/snap7/files/1.4.2/snap7-full-1.4.2.7z/download it should be called snap7-full-1.4.2

Then copy the dll file: release/Windows/Win64/snap7.dll to your system path

[emrekocak1]

Snap7-VB6.zip did not work for me either, with similar error messages.

.... %1 ist keine zulassige Win32-Anwendung... “...%1 is not a valid Win32 application ...

Make sure you download the right file from sourceforge: https://sourceforge.net/projects/snap7/files/1.4.2/snap7-full-1.4.2.7z/download it should be called snap7-full-1.4.2

Then copy the dll file: release/Windows/Win64/snap7.dll to your system path

Thanks a lot. It works!

[gijzelaerr]

we hope to solve this kind of issues with the binary wheels we are trying to make.