DieterG

Thank's everybody, Wil try the IBH gateway. Does anybody have tryed a android app to read and change bits ?

Thanks for the advice.  I have a siemens hmi laying around.  This one has profibus and ethernet connection.  Would it be possible to program the plc thrue the hmi?  The hmi is currently not used, i don't have wincc to program it. 

Hello, I just installed the Step 7 V5.7 on my windows 10 laptop. Was running the Step 7 V5.1 SP3 version on a virtual machine before. Found out that my old rs232/MPI-DP adapter is not supported anymore. So i have to buy a new adapter. instead i was thinking to connect with ethernet so i don't have to leave my desk every time i make some changes. I guess i need the CP343 module for this ? Now that one is really expensive. Does anyone know any other options ?   Thank's for the help. Dieter.

Thank's for the help. I wil order it today, they deliver a suited GSD file with the converter. Dieter.

I have got an answer from the energy meter supplyer. As i thought, they don't hava any experience with PLC's As a possible option, with new firmware there is also the Modbus TCP option. So maybe, if i add ethernet connection to my 315 i can connect them this way. I also found a Modbus RTU/profibus converter for around €140, maybe that's the cheapest and easyest option. Question about this -> when i want to add new hardware, i simply drag the specific siemens part and asign it with the profibus network. But this converter wil not be in the parts catalog, how do i add such a part ?   Thank's, Dieter.

i have sent them an email to ask. There products are usualy used on raspberry pi systems that use the modbus protocol. i'm not sure they have experiance with industrial systems, wil have to wait there answer. If modbus is really that hard, i might better look for another energy meter, with profibus connection.  

Sadly no extra port on the HMI

N.8.1 is what the specs tell me. Maybe a typing error?

Extra info : The RS485 uses Modbus RTU in  "n,8,1" data format. Current setup is : S7-315DP plc -> 2x DI16 -> 2x DO16 -> 1x 4xAI/2xAO 2x ET200L 16DI/16DO conected with profibus 1x Proface HMI on the MPI port   I guess i need some extra hardware ?

Hello,  I am new here.  Not a professional programmer, but i like to play wit it.  I have a s7-315dp running my house, together with a Proface hmi.  I recently installed a kwh meter to monitor the solar pannels.  This kwh meter is equipped with rs485 port, i think to connect with app's like home assistent.  I wonder if it could be possible to read the kwh meter with the plc and display it on the HMI.    Thank's for the help.  Dieter.