Siemens SIMATIC S7-1500 Function Manual page 160

Availability
The Web API is only available for CPUs as of firmware version from V2.8 for the following
systems:
● the CPUs of the S7-1500 automation system
(the CPUs of the S7-1500R/H redundant system are not supported)
● the CPUs 1504D TF and 1507D TF of the SIMATIC Drive Controller
● the CPUs 1513pro(F)-2 PN and 1516pro(F)-2 PN of the ET 200pro distributed I/O system
● the CPUs 1510SP(F)-1 PN and 1512SP(F)-1 PN of the ET 200SP distributed I/O system
The following requirements must be met before you can use the Web API.
● You have assigned the correct firmware version (≥ V2.8) in the Hardware catalog of
STEP 7
● You have created and configured a project and downloaded to the CPU.
● You have selected the following checkbox in STEP 7
– Activate web server on this module
API endpoint
As an RPC protocol, JSON-RPC V2.0 is based on HTTP. The Web API can be reached via
POST Requests to the following URL:
https://[ip_address]/api/jsonrpc
An example of the required structure of an HTTP Request and HTTP Response for
successfully making a Web API request can be found in the chapter Web API integration
(Page 166).
Web server
Function Manual, 11/2019, A5E03484625-AG
3.20 API (Application Programming Interface)
Web pages
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