How to add payload and use the post method to get response from an API in twincat 3?

Question

enter image description hereNot getting appropriate response like I get on the postman application

I tried a few online APIs which give me response, but I need an option to be able to add a payload in my program. I am using tc3 iotbase library from the twincat library repo.

Answer 1

The HTTP POST request payload is builded by the FB_IotHttpRequest function block, when you call one of the send methods

You can use 2 option here:

• FB_IotHttpRequest.SendRequest(...) in this case you need to create the payload JSON manually
• FB_IotHttpRequest.SendJsonDomRequest(...) in this case you need just pass the reference of the FB_JsonDomParser, which contains the json document.