I have attached my connection diagram.
Link of code reference.
The response shown in figure is w.r.t modbus device attached, as shown in figure.
I am testing this code as shown in example. Other links i tried as soon as connected communication wont work. with below peice of code i could able to display data like shown in video . I wanted to how is viewing data over modbus softare of nodemcu.
When i Send modbus request through USB to TTL with Comport selected I get response . That make me ensure modbus device is working well. Now i would like to see same data through nodemcu eliminating
USB to TTL converter . But i dont know how to get data from library if data received then its easy to forecast in app,