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gaty · Member Joined: 01 Mar 2017 Posts: 188

Library for HTTP Communication (LHTTP)
https://support.industry.siemens.com/cs/document/109763879/library-for-http-communication- (lhttp)
The library for HTTP communication (LHTTP) enables the data exchange of a SIMATIC S7-1500 PLC via the integrated Ethernet interface with another device in the local network or a web server in the Internet via HTTP or HTTPS.
The Hypertext Transfer Protocol (HTTP) is a data transfer protocol used primarily to load Web pages from the World Wide Web.
Due to the increasing networking of plants and the advancement of the Internet of Things (IoT), HTTP and HTTPS also play an increasingly important role in automation technology.
The library for HTTP communication (LHTTP) enables the data exchange of a SIMATIC S7-1500 PLC via the integrated Ethernet interface with another device in the local network or a web server in the Internet via HTTP or HTTPS.

Library for HTTP Communication (LHTTP) Library for HTTP Communication (LHTTP)

The LHTTP library provides function blocks with which the most conventional HTTP request methods can be implemented in the user program:
GET
POST
Due to the integrated certificate management in the TIA portal, it is also possible to transfer data securely with HTTPS using the same components.

Downloads
https://support.industry.siemens.com/cs/attachments/109763879/109763879_LHTTP_DOC_V10_en.pdf
https://support.industry.siemens.com/cs/attachments/109763879/109763879_LHTTP_LIB_V100.zip