Simple Zabbix python3 script, to get values from Siemens S7 PLCs using snap7 suite and python-snap7.

Example for Zabbix server/proxy running on Centos 7:

1. Download snap7 from https://sourceforge.net/projects/snap7/files/
2. Install snap7:

7za x snap7-full-1.4.2.7z
sudo yum groupinstall 'Development Tools'
cd snap7-full-1.4.2/build/unix
make -f x86_64_linux.mk
sudo make -f x86_64_linux.mk install
sudo ldconfig

3. Install python-snap7:

sudo python3 -m pip install python-snap7

4. Copy s7_get.py to /usr/lib/zabbix/externalscripts/:

cp s7_get.py /usr/lib/zabbix/externalscripts
chmod +x /usr/lib/zabbix/externalscripts

5. Test the script by running it directly from shell:

$ ./s7_get.py 172.10.1.1 0 0 66 2 int
6

Create new item:

• Type: External check
• Key: s7_get.py[<s7_ip_address>,<s7_rack>,<s7_slot>,<DB>,<offset>,<datatype>], where datatype = int,bool or float.

For example: