“connection at startup” is still TRUE. Change it to FALSE an re-initialize the modbus block. This is an init parameter and is only taken over, when the block is initiated.

Did you re-initialize the modbus block? In online IDB this internal parameter is still TRUE. Attach the new online-IDB as printed pdf.

Without the complete Online-IDB it is hard to find the reason. DONE and ERROR counter are 0, so no telegram is handled. 
What happens when you set ENQ_ENR = TRUE now via VAT? In STATUS there must be a change. 
Do you also use the connection ID = 1 for another communciation function? ID must be used only for this one modbus block, for no other block. Can you attach the wireshark-Trace of the telegram (query and response)?

Strange port numbers… Normally the modbus server has port number 502.  It it seems this is not a modbus telegram, I can't see the modbus header…
Please attach the parameter datablock. 
You can also copy the modbus block, the OB1, the online datablock and the parameter datablock into an additional project, zip and attach here. 

I need the information in the Online IDB of the modbus block and in the parameter DB. To make screenshots of all pages is to time intensiv, I think. So the idea is, that you copy the online blocks into another project to send me.
If you have time, you can also make many, many screenshots. ;-)