Thank you for your kind support, 
I succeeded for configuring Raspberry pi 3b+, I used codesys control for raspberry pi 4.2.0.0
Codesys V3.5 V17.10 SP 1  - 32 bit system, also installed Codesys edge gateway. I enabled  all interfaces in OS. and things got workout.
Thank you for your kind support.
I am going to start engineering student training from Saturday 1st JAN2021.
I will share details of 
Progess.

On Wed 29 Dec, 2021, 1:16 AM eschwellinger, <no-reply@codesys.com> wrote:

I would use the Gateway on the PI - to scan the plc. ( You have been asked on deploying the runtime if you want to install the EdgeGateway too9
Add new Gateway with the IP address of your PI and scan the plc that way.


unable to connect Raspberry Pi with Codesys


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