How do I install the snap7 library?

 Hi,

Palmakir

How do I install the snap7 library? I have got the python-snap7 installed. But the snap7 library is missing. Neither does sudo, nor apt-get work with IoT2040. What could be done?

(I want to read a simple integer PLC tag on IOT2040 using Python)

Did you try to install it from source like it is described here? You can donwload the sources for the IOT from sourceforge.

Best regards!

 Hi,

RamCavPer

Hi,

I have the same issue. I have installed python-snap7, but I'm not able to install snap7 library. I followed this steps http://python-snap7.readthedocs.io/en/latest/installation.html#ubuntu and also tried to compile from source make -f x86_64_linux.mk.

Is there something else I can tried?

As an attachment I'm sending the output I get from the installation.

Thanks!

 

 you are not using an IOT2000, are you?

I managed to install the snap7 library on the IOT2000 with the instruction and library snap7-iot-quark-1.4.2.tar.gz from my last post: 

• Download snap7-iot-quark-1.4.2.tar.gz and copy it to your IOT2000 (e.g to /media)
• go to /media
• tar xzf snap7-iot-quark-1.4.2.tar.gz
• cd snap7-iot-quark-1.4.2/build/unix
• make -f i586_linux.mk
• cd ../bin/i586-linux
• cp libsnap7.so /usr/lib
• ldconfig
• pip3 install python-snap7

After there steps I was able to use the examples provided by python-snap7. In some examples you have to correct the sytax because these examples are writte for python2.7. 

Best regards!

Hi,

yes this packages is for i586, because the IOT2000 has this processor onboard. And we are supporting this device with our Yocto Liux image in this forum here. 

I have no idea what device you are using, but it looks like the g++ compiler is missing on your system. 

Best regards!