IO status from protected Siemens PLC

[blaze_george]

I have a password protected Siemens ET200SP PLC, with 'Permit access with PUT/GET communication from remote partner' option disabled.

Is there any way to take the analog input module readings to a third party device like Ew*n Flexy? Modbus, any external software running in windows, through HMI, anyhow.

 

[mk42]

I'm assuming you don't have the password. Does the device have the web page activated, OPC UA, anything like that?


There is no way to get the PLC data that can't be locked out by security settings in one way or another.


If you want the analog input readings, you might need to tap them. Obviously the wiring/electronics required varies depending on whether they are voltage/current/temp/etc.