Topic: Rest API client communication

Tagged: REST API, url

This topic has 7 replies, 2 voices, and was last updated 1 year, 2 months ago by Mikhail.

Viewing 8 posts - 1 through 8 (of 8 total)

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August 7, 2024 at 10:54 am #15102

rajatdas2005
Participant

I have installed Rapid Scada in a Windows system. I have a standalone OPCUA server running and server variables is visible in RapidScada OPCUA client. Now from a separately running RestAPI client, I want to get and post the OPCUA client variables present in Rapid Scada through url and json structure. Please guide me how I can do this ?

August 7, 2024 at 11:49 am #15103
Mikhail
Moderator
RESP API functions provided by Rapid SCADA can be found here. URL examples are given in the source code. You can call them either from client or server code.
- This reply was modified 1 year, 3 months ago by Mikhail.
August 14, 2024 at 5:55 pm #15126
rajatdas2005
Participant
I want to read/write OPCUA variables from an rest-api client application (get/post). In the rest-api I am providing url’s like “http://localhost/Api/Main/GetCurData?cnlNums=101-103” or “http://10.135.114.17:10000/Api/Auth/Login”. But in the rapid scada server log I am getting error as “incorrect format of data received from client data length is too big”.
Please tell me what will be the right url to access the opcua variables from rest api client application.
- This reply was modified 1 year, 3 months ago by rajatdas2005.
August 15, 2024 at 7:51 am #15130

Mikhail
Moderator

Hello,
Rest API works via the TCP port of the web application. It is not 10000, which is the Server’s TCP port.

August 15, 2024 at 10:22 am #15131

rajatdas2005
Participant

Hi,
Thank you for your reply. From the architectural diagram, it is visible that external applications can communicate only with the rapid scada server. So what will be the correct url so that I can access opcua client variables from an external application via rapid scada server ?

August 16, 2024 at 9:56 am #15144

Mikhail
Moderator

Hi,
To use REST API you should connect to the web application. The Server application supports custom TCP-based protocol. See this link for more details.

September 24, 2024 at 9:21 am #15500

rajatdas2005
Participant

Hi in Rest API GET call I am (http://192.168.1.2:10008/Api/Main/GetCurData?cnlNums=101) and POST (http://192.168.1.2:10008/Api/Main/SendCommand).

Instead of these cnlNums=101, is it possible to do GET and POST call by the variable name itself ?

September 24, 2024 at 11:56 am #15501

Mikhail
Moderator

Hi,
No. The request format should be as you posted.
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