Hi,

I working on system that monitors the entire system.

We have 2 types of plc to monitor:

Siemens S7-1200 and Siemens S7-400.

There is a way to get:

1. Operational status
2. Power Supply status
3. LED status

From these plcs with python???

Important thing that I need to monitor it as a black box.

I never worked with plcs, so I'll be happy to get some explanation about it.

I already read the manual.

Many thanks

Hello imamorski;

I would look into Snap 7, which provides a wrapper for Python (among other high-level languages) for S7 PLCs. This has been discussed here:

https://support.industry.siemens.com/tf/ww/en/posts/code-plc-with-python/139607/?page=0&pageSize=10

Then I would study the different diagnostics capability of the S7 CPUs, especially the diagnostic OBs specifically used for the type of error you want to monitor.

https://support.industry.siemens.com/cs/ww/en/view/109483251

https://support.industry.siemens.com/cs/ww/en/view/26596663

Hope this helps,

Daniel Chartier