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Alessio Valeri, 08/01/2025 03:47 PM

1 1 Alessio Valeri
# Messages
2 70 Alessio Valeri
3
Observing the traffic on the bus we can see there are different units. These are the address found on the 12 bus : 
4 21 Alessio Valeri
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|ADDRESS|UNIT |
6
|--|--|
7 72 Alessio Valeri
| 41 | Hi-Mit remote controller  |
8 71 Alessio Valeri
| 146 |  |
9
| 242|  |
10
| 243 |  |
11
|  34|  |
12
| 35 |  |
13
|  47|  |
14
| 50 |  |
15 72 Alessio Valeri
| 63 |  |
16 37 Alessio Valeri
17 18 Alessio Valeri
18 51 Alessio Valeri
# REQUESTS / REPLIES ANALYSIS
19 52 Alessio Valeri
 Here I try to report any communication pattern I can find :
20 1 Alessio Valeri
21 67 Alessio Valeri
## 41 - 146 interaction
22
Messages exchanged between Hi-mit interface and outdoor unit
23
WIP
24
25 52 Alessio Valeri
## 47 - 242 interaction
26 60 Alessio Valeri
<span style="color:darkorange">|47|0|10|202|160|1|1|108|0|12|</span>
27 52 Alessio Valeri
<span style="color:green">ACK from 242</span>
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|242|0|48|1|1|1|1|108|62|0|31|129|129|27|0|0|0|0|0|0|0|22|0|0|0|0|0|0|0|20|60|50|7|24|25|129|129|0|100|3|0|0|8|0|4|0|0|7|
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<span style="color:green">ACK from 47</span>
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31 53 Alessio Valeri
## 50 - 35 interaction
32
33 57 Alessio Valeri
<span style="color:darkorange">|50|0|9|1|1|1|0|240|248|</span>
34 1 Alessio Valeri
<span style="color:green">ACK from 35</span>
35 59 Alessio Valeri
|35|0|36|1|0|1|1|255|0|40|32|0|0|0|2|0|3|34|128|31|0|31|128|18|170|0|0|0|41|41|1|3|241|208|0|106|
36 54 Alessio Valeri
<span style="color:green">ACK from 50</span>
37 57 Alessio Valeri
<span style="color: darkorange">|50|0|28|1|1|1|0|255|24|32|0|7|24|33|129|34|30|30|0|0|25|0|62|0|6|0|2|100|</span>
38 54 Alessio Valeri
<span style="color:green">ACK from 35</span>
39 59 Alessio Valeri
|35|0|14|1|0|1|1|254|16|32|16|32|0|241|
40 54 Alessio Valeri
<span style="color:green">ACK from 50</span>
41 57 Alessio Valeri
<span style="color: darkorange">|50|0|32|1|1|1|0|159|31|129|129|20|60|0|7|129|31|26|100|3|0|0|0|0|0|0|0|0|0|2|0|111|</span>
42 53 Alessio Valeri
<span style="color:green">ACK from 35</span>
43
44 1 Alessio Valeri
## 63 - 243 interaction
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46 61 Alessio Valeri
<span style="color:darkorange">|63|1|9|202|160|1|0|0|99|</span>
47 50 Alessio Valeri
<span style="color:green">ACK from 243</span>
48 45 Alessio Valeri
|243|1|48|1|0|0|255|192|6|0|0|2|0|0|0|0|0|0|0|0|0|66|34|18|178|0|0|60|20|31|0|9|31|0|145|0|0|0|0|33|0|24|0|30|0|0|0|92|
49 61 Alessio Valeri
<span style="color:darkorange">|63|1|9|202|160|1|0|1|98|</span>
50 50 Alessio Valeri
<span style="color:green">ACK from 243</span>
51 45 Alessio Valeri
|243|1|48|1|0|0|255|193|6|0|0|0|0|26|0|0|0|0|7|0|0|0|129|0|0|0|31|0|0|100|31|0|0|0|0|3|129|0|0|0|0|0|129|0|0|0|0|243|
52 1 Alessio Valeri
53 65 Alessio Valeri
## AUTODISCOVERY ??
54 73 Alessio Valeri
From time to time these messages appears on the bus, they are not always grouped together and they are not acknowledged, maybe they are used to report their presence ?
55 65 Alessio Valeri
56
|35|0|28|1|0|1|255|242|3|34|128|31|0|31|128|18|170|0|0|0|41|41|1|3|241|208|0|171|
57
|50|0|9|1|1|1|255|241|6|
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|41|0|9|202|160|255|255|241|146|
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60 62 Alessio Valeri
## ALL MESSAGES
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62 11 Alessio Valeri
### ADDRESS 41 ( HI-MIT INTERFACE )
63 1 Alessio Valeri
|41|0|9|202|160|255|255|241|146|
64
|41|0|9|202|160|1|1|97|2|
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66 4 Alessio Valeri
|41|0|48|202|160|1|1|107|62|31|8|255|11|12|45|24|0|0|26|28|28|28|28|28|28|28|0|0|0|0|0|0|0|0|0|0|0|0|0|0|0|0|0|0|0|0|0|211|
67 1 Alessio Valeri
|41|0|48|202|160|1|1|107|62|0|8|0|11|12|45|24|0|0|26|28|28|28|28|28|28|28|0|0|0|0|0|0|0|0|0|0|0|0|0|0|0|0|0|0|0|0|0|51|
68 5 Alessio Valeri
69 20 Alessio Valeri
### ADDRESS 146 ( PCB1 BOARD ? )
70 33 Alessio Valeri
Messages coming from 146 seems to be associated with the master controller status
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72 12 Alessio Valeri
|146|0|12|1|1|1|0| **99** |62| **3** | **9** |90|   <- VIENE INVIATO QUANDO IL MASTER CONTROLLER CAMBIA LA TEMPERATURA ACQUA CICLO 1 - 9°C
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|146|0|12|1|1|1|0| **99** |62| **3** | **11** |88|  <- VIENE INVIATO QUANDO IL MASTER CONTROLLER CAMBIA LA TEMPERATURA ACQUA CICLO 1 - 11°C
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|146|0|12|1|1|1|0| **99** |62| **4** | **17** |69|  <- VIENE INVIATO QUANDO IL MASTER CONTROLLER CAMBIA LA TEMPERATURA ACQUA CICLO 2 - 17°C
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|146|0|12|1|1|1|0| **99** |62| **10** | **22** |76| <- VIENE INVIATO QUANDO IL MASTER CONTROLLER CAMBIA LA TEMPERATURA CICLO 1 AMB1 - 22°C 
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77 13 Alessio Valeri
I messaggi con intestazione |146|0|12|1|1|1|0| **99** |62| sembrano essere generati quando vengono effettuate modifiche sul master controller interno. Il primo byte successivo sembra indicare l'id del parametro modificato ed il byte successivo contiene il valore modificato.
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79 14 Alessio Valeri
**Inviato quando seleziono la modalità HEAT**
80 16 Alessio Valeri
|146|0|30|1|1|1|0|99|62|1| **64** |3|20|4|20|11|22|12|22|13|22|14|22|15|22|16|22|17|22|24|
81 14 Alessio Valeri
|146|0|12|1|1|1|0|99|62|22|128|198|
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**Inviato quando seleziono la modalità COLD**
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|146|0|30|1|1|1|0|99|62|1| **8** |3|13|4|16|11|28|12|28|13|28|14|28|15|28|16|28|17|28|71|
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|146|0|12|1|1|1|0|99|62|22|160|230|
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**Inviato quando seleziono la modalità AUTO**
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|146|0|28|1|1|1|0|99|62|1| **4** |3|28|11|0|12|0|13|0|14|0|15|0|16|0|17|0|80|
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90
91 15 Alessio Valeri
**Il seguente messaggio di 48 Byte sembra essere un aggiornamento di stato periodico**
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|146|0|48|1|1|1|0|97|62|0|8|0| **11** |12|45|24|0|0|0|26|28|28|28|28|28|28|28|0|0|0|0|160|0|0|0|0|0|0|0|0|0|0|0|0|0|0|0|242|
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### ADDRESS 242 (UNKNOWN)
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|242|0|48|1|1|1|1|108|62|0| **7** |129|129|27|0|0|0|0|0|0|0|22|0|0|0|0|0|0|0|20|60|50|20|24|12|129|129|0| **14** |3| **14** |0|24|2|4|1|1|111|
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**WATER TEMP (IN/OUT?) | WATER PUMP SPEED % |  WATER FLOW LEVEL ?**
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### ADDRESS 50 (UNKNOWN)
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101
|50|0|9|1|1|1|0|240|248|
102
|50|0|9|1|1|1|255|241|6|
103
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|50|0|28|1|1|1|0|255|24|32| *0* |22|24| **16** |129|20| **11** |12|0|0|22|0|62|0|6|0|2|122|
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**IDU GAS TEMPERATURE** (16) | **WATER OUT PHEX TEMP** (11) | 
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11^ BYTE becomes 1 when cooling is enabled. Change to 17 when water pump is running.
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108 43 Alessio Valeri
|50|0|32|1|1|1|0|159|30|129|129|20|60|0|7|129|30|26|100|3|0|0|0|0|0|0|0|0|0|2|0|111|
109
110 23 Alessio Valeri
### ADDRESS 35 (UNKNOWN)
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112
|35|0|14|1|0|1|1|254|16|32|16|32|0|241|
113 34 Alessio Valeri
Message unknown, does not seems to change with time: looks like a request.
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115 25 Alessio Valeri
|35|0|28|1|0|1|255|242|3|22|128| **25** |0| **51** |128| **17** |110|0|0|0|41|41|1|3|241|208|0|114|
116 26 Alessio Valeri
**EVAP GAS TEMP | DISCHARGER TEMPERATURE | IDU LIQUID TEMP**
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|35|0|36|1|0|1|1|255|0|40|32|0|0|0|2|0|3|20|128| **22** |0| **42** |128| **14|** 100|0|0|0|41|41|1|3|241|208|0|178|
120
**EVAP GAS TEMP | DISCHARGER TEMPERATURE | IDU LIQUID TEMP**
121 28 Alessio Valeri
Message similar to the previous one with added 8 byte.
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123
### ADDRESS 47 (UNKNOWN)
124
|47|0|10|202|160|1|1|108|0|12|
125 69 Alessio Valeri
Message unknown, does not seems to change with time: it seems a request  that 242 replies to.
126 36 Alessio Valeri
127
### ADDRESS 63 (UNKNOWN)
128
129
|63|1|9|202|160|1|0|0|99|
130
|63|1|9|202|160|1|0|1|98|
131 38 Alessio Valeri
132 39 Alessio Valeri
When the first message is sent it is acked by 243. Then follows this reply: 
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|243|1|48|1|0|0|255|192|6|0|0|2|0|0|0|0|0|0|0|0|0|64|30|17|159|0|0|60|20|30|0|1|30|0|145|0|0|0|0|34|0|24|0|29|0|0|0|68|
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The second message from 63 is then sent and acked again by 243. Follows the reply :
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|243|1|48|1|0|0|255|193|6|0|0|0|0|26|0|0|0|0|7|0|0|0|129|0|0|0|29|0|0|100|29|0|0|0|0|3|129|0|0|0|0|0|129|0|0|0|0|243|
139 41 Alessio Valeri
140
### ADDRESS 243 (UNKNOWN)
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|243|1|48|1|0|0|255|192|6|0|0|2|0|0|0|0|0|0|0|0|0|64|30|17|159|0|0|60|20|30|0|1|30|0|145|0|0|0|0|34|0|24|0|29|0|0|0|68|
143
|243|1|48|1|0|0|255|193|6|0|0|0|0|26|0|0|0|0|7|0|0|0|129|0|0|0|29|0|0|100|29|0|0|0|0|3|129|0|0|0|0|0|129|0|0|0|0|243|
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