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Daikin VRV HVAC HTTP virtual device control


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Question

I need to control a Daikin VRV multi-split HVAC system which has their intelligent touch controller with the HTTP interface option installed. To control each individual indoor unit I need to send an HTTP POST.

Below is an example of the information the controller is expecting the HTTP POST to contain...

Here is an example to get A/C "1:1-02" current status.

HTTP Request

POST /cmd/ HTTP/1.1 ¥r¥n

Content-Length: 32¥r¥n
Content-Type: application/octet-stream¥r¥n

¥r¥n
20 000000 {Command Size;32}
74 110100 {Command ID;70004}
00 000000 {Reserved 1}
00 000000 {Reserved 2}
04 {A/C Address to get status; 1:1-00 to 1:1-07 (1:1-02 is enable)} -------
00 {A/C Address to get status; 1:1-08 to 1:1-15}
00 {A/C Address to get status; 1:2-00 to 1:2-07}
00 {A/C Address to get status; 1:2-08 to 1:2-15}
00 {A/C Address to get status; 1:3-00 to 1:3-07}
00 {A/C Address to get status; 1:3-08 to 1:3-15}
00 {A/C Address to get status; 1:4-00 to 1:4-07}
00 {A/C Address to get status; 1:4-08 to 1:4-15} Request Command (hexadecimal)
00 {A/C Address to get status; 2:1-00 to 2:1-07}
00 {A/C Address to get status; 2:1-08 to 2:1-15}
00 {A/C Address to get status; 2:2-00 to 2:2-07}
00 {A/C Address to get status; 2:2-08 to 2:2-15}
00 {A/C Address to get status; 2:3-00 to 2:3-07}
00 {A/C Address to get status; 2:3-08 to 2:3-15}
00 {A/C Address to get status; 2:4-00 to 2:4-07}
00 {A/C Address to get status; 2:4-08 to 2:4-15} ---------

I am trying to create a virtual device for each indoor unit (room) and have looked at a lot of posts and tutorials and can’t find anything similar to point me in the right direction, so any ideas how to get this up and running appreciated...

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