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Conversion HEX Code to binary (Mitsubishi A/C)
This thread has 7 replies. Displaying all posts.
Post 1 made on Thursday April 28, 2016 at 08:46
Nobbi
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Hi,

I am new here...so sorry for the probably easy question.
I have a Mitsubishi A/C. My Smarthome System (Loxone) has a IR sending device.

Due to system restrictions I can not learn-in the complex codes from Mitsubishi. I found a template to use all functions except to turn off the A/C. Here on this site I found a turn off code (hopefully correct). My Problem ist I need a binary code not a hex code.

[Link: remotecentral.com]

How can I transfer this code to "0" and "1"

Thanks a lot

Nobbi
Post 2 made on Thursday April 28, 2016 at 10:53
mdavej
Active Member
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568
IRScrutinizer has the ability to convert among many formats. I have no idea what Loxone requires, but if it's LIRC format, as I suspect, that program can do it.

A strict binary conversion of the pronto hex would be simple enough to do by hand using a calculator, calculator app, excel , etc., but the resulting signal most certainly won't work.

What do you mean by you found a template for the other functions? That may be the Rosetta Stone that we need to determine the relationship between pronto hex and the binary format that Loxone uses.
OP | Post 3 made on Thursday April 28, 2016 at 11:42
Nobbi
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I just need a 1/0 string.
I can generate almost any string. I also have an XML Template with one function


It is a little Template you feed in the variables (Temp, Fan, Mode etc.) and it calculates the IR string. Only turning off does not work.

[Link: loxone.com]

Sorry, only in german...Look an the bottom
Post 4 made on Thursday April 28, 2016 at 15:44
mdavej
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568
I translated to english, but I still don't understand the signal format. Sorry.
OP | Post 5 made on Sunday May 1, 2016 at 14:55
Nobbi
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What exactly?
1 is sending, 0 is pause.
All other Information (frequency, rate, length of impulse...) is already stored in another place.
Post 6 made on Sunday May 1, 2016 at 19:23
3FG
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The Loxone format is not very clear, but I'm going to make the assumption that fields listed as "C:" are bit strings which do not vary among the various functions. Then the overall signal is 136 bits in length (17 bytes), noting that S:1 evidently means an 8 bit checksum.

I recognize the first part of the signals:  1100 0100 1101 0011 0110.  This is the beginning of a Kaseikyo IR protocol, where 1100 0100 1101 0011 are the OEM identifiers for Mitsubishi,  and 0110 is the XOR of the first 4 nibbles.  So this is a 136 bit version of Mitsubishi-K.  That means the Loxone documentation has left out the details of the frequency, the lead-in, and the lead-out.

However, the Pronto Hex you've linked to is not Mitsubishi-K, and it is only 52 bits. So we have no info on the Power-Off signal for your air conditioner.
Post 7 made on Sunday May 1, 2016 at 20:22
3FG
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Actually, I had forgotten that Mitsubishi has published the codes.   There are 18 bytes, and they may need to be sent twice.  Apparently I misunderstood the Loxone document since I counted 17 bytes from their site.
Post 8 made on Monday September 26, 2016 at 09:38
Loxone Florian
Junior Member
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September 2016
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Hi Nobbi,

let me know if you still need help with the IR commands for your Loxone system. We're happy to help.

Florian


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