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PROTOCOL-PDO.md

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PDO sensors

PDO data types

Numbers are stored in little endian format.

type description remark
0 CN_BOOL 00 (false), 01 (true)
1 CN_UINT8 00 (0) until ff (255)
2 CN_UINT16 3412 = 1234
3 CN_UINT32 7856 3412 = 12345678
5 CN_INT8
6 CN_INT16 3412 = 1234
8 CN_INT64
9 CN_STRING
10 CN_TIME
11 CN_VERSION

Overview of known sensors

pdid type description examples
16 CN_UINT8 Device state 0=init, 1=normal, 2=filterwizard, 3=commissioning, 4=supplierfactory, 5=zehnderfactory, 6=standby, 7=away, 8=DFC
17 CN_UINT8 ?? ROOM_T10
18 CN_UINT8 Changing filters 1=active, 2=changing filter
33 CN_UINT8 ?? Preset 0, 1
35 CN_UINT8 ?? Temperature Profile 1
36 CN_UINT8 ?? STANDBY
37 CN_UINT8 0
40 CN_UINT8 ?? MANUALMODE
42 CN_UINT8 0
49 CN_UINT8 Operating mode -1=auto, 1=limited manual, 5=unlimited manual, 6=boost
50 CN_UINT8 ?? Bypass
51 CN_UINT8 ?? Temperature Profile
52 CN_UINT8 ?? STANDBY
53 CN_UINT8 ?? COMFOCOOLOFF -1, 0, 1
54 CN_UINT8 Supply Fan Mode -1=balanced, 1=supply only
55 CN_UINT8 Exhaust Fan Mode -1=balanced, 1=exhaust only
56 CN_UINT8 Manual Mode -1=auto, 1=unlimited manual
57 CN_UINT8 -1, 0
58 CN_UINT8 -1, 0
65 CN_UINT8 Fans: Fan speed setting 0=away, 1=low, 2=medium, 3=high
66 CN_UINT8 Bypass activation mode 0=auto, 1=full, 2=none
67 CN_UINT8 Temperature Profile 0=normal, 1=cold, 2=warm
68 CN_UINT8 ?? STANDBY 0
69 ?? COMFOCOOLOFF 0=auto, 1=off
70 CN_UINT8 Supply Fan Mode 0=balanced, 1=supply only
71 CN_UINT8 Exhaust Fan Mode 0=balanced, 1=exhaust only
72 CN_UINT8 ?? MANUALMODE
73 CN_UINT8 0
74 CN_UINT8 0
81 CN_UINT32 Fan Speed Next Change -1=no change, else countdown in seconds
82 CN_UINT32 Bypass Next Change -1=no change, else countdown in seconds
85 CN_UINT32 ComfoCool Next Change -1=no change, else countdown in seconds
86 CN_UINT32 Supply Fan Next Change -1=no change, else countdown in seconds
87 CN_UINT32 Exhaust Fan Next Change -1=no change, else countdown in seconds
88 CN_UINT32 ?? MANUALMODE
89 CN_UINT32 -1, 0
90 CN_UINT32 -1, 0
96 CN_BOOL
115 CN_BOOL ?? EXHAUST_F12
116 CN_BOOL ?? SUPPLY_F22
117 CN_UINT8 Fans: Exhaust fan duty value in % (28%)
118 CN_UINT8 Fans: Supply fan duty value in % (29%)
119 CN_UINT16 Fans: Exhaust fan flow value in m³/h (110 m³/h)
120 CN_UINT16 Fans: Supply fan flow value in m³/h (105 m³/h
121 CN_UINT16 Fans: Exhaust fan speed value in rpm (1069 rpm)
122 CN_UINT16 Fans: Supply fan speed value in rpm (1113 rpm)
128 CN_UINT16 Power Consumption: Current Ventilation value in Watt (15 W)
129 CN_UINT16 Power Consumption: Total year-to-date value in kWh (23 kWh)
130 CN_UINT16 Power Consumption: Total from start value in kWh (23 kWh)
144 CN_UINT16 Preheater Power Consumption: Total year-to-date value in kWh (23 kWh)
145 CN_UINT16 Preheater Power Consumption: Total from start value in kWh (23 kWh)
146 CN_UINT16 Preheater Power Consumption: Current Ventilation value in Watt (15 W)
176 CN_UINT8 RF Pairing Mode 0=not running, 1=running, 2=done, 3=failed, 4=aborted
192 CN_UINT16 Days left before filters must be replaced value in days (130 days)
208 CN_UINT8 Device Temperature Unit 0=celsius, 1=farenheit
209 CN_INT16 Running Mean Outdoor Temperature (RMOT) value in °C (117 -> 11.7 °C)
210 CN_BOOL Heating Season is active 0=inactive, 1=active
211 CN_BOOL Cooling Season is active 0=inactive, 1=active
212 CN_UINT8 Temperature profile target value in °C (238 -> 23.8 °C)
213 CN_UINT16 Avoided Heating: Avoided actual value in Watt (441 -> 4.41 W)
214 CN_UINT16 Avoided Heating: Avoided year-to-date value in kWh (477 kWh)
215 CN_UINT16 Avoided Heating: Avoided total value in kWh (477 kWh)
216 CN_UINT16 Avoided Cooling: Avoided actual value in Watt (441 -> 4.41 W)
217 CN_UINT16 Avoided Cooling: Avoided year-to-date value in kWh (477 kWh)
218 CN_UINT16 Avoided Cooling: Avoided total value in kWh (477 kWh)
219 CN_UINT16 0
220 CN_INT16 ?? Outdoor Air Temperature (Preheated) value in °C (75 -> 7.5 °C)
221 CN_INT16 ?? Temperature: Supply Air (PostHeated) value in °C (170 -> 17.0 °C)
224 CN_UINT8 Device Airflow Unit 1=kg/h, 2=l/s, 3=m³/h
225 CN_UINT8 Sensor based ventilation mode 0=disabled, 1=active, 2=overruling
226 CN_UINT16 Fan Speed (modulated) 0, 100, 200, 300 (0-300 when modulating and PDO 225=2)
227 CN_UINT8 Bypass state value in % (100% = fully open)
228 CN_UINT8 ?? FrostProtectionUnbalance 0
229 CN_BOOL 1
230 CN_INT64 Ventilation Constraints Bitset See calculate_airflow_constraints()
256 CN_UINT8 1=basic, 2=advanced, 3=installer
257 CN_UINT8
274 CN_INT16 Temperature: Extract Air value in °C (171 -> 17.1 °C)
275 CN_INT16 Temperature: Exhaust Air value in °C (86 -> 8.6 °C)
276 CN_INT16 Temperature: Outdoor Air value in °C (60 -> 6.0 °C)
277 CN_INT16 ?? Temperature: Outdoor Air (Preheated?) value in °C (60 -> 6.0 °C)
278 CN_INT16 ?? Temperature: Supply Air (Preheated?) value in °C (184 -> 18.4 °C)
290 CN_UINT8 Humidity: Extract Air value in % (49%)
291 CN_UINT8 Humidity: Exhaust Air value in % (87%)
292 CN_UINT8 Humidity: Outdoor Air value in % (67%)
293 CN_UINT8 Humidity: Preheated Outdoor Air value in % (67%)
294 CN_UINT8 Humidity: Supply Air value in % (35%)
321 CN_UINT16 3
325 CN_UINT16 ?? COMFOCOOLOFF 0, 1, 3
328 CN_UINT16 ?? MANUALMODE
330 CN_UINT16 0, 1
337 CN_UINT32 ?? PRESET 0, 2, 32, 34
338 CN_UINT32 Bypass Override 0=auto, 2=overriden
341 CN_UINT32 ?? COMFOCOOLOFF 00000000, 02000000
342 CN_UINT32 Supply Fan Mode 0 = balanced, 2 = supply only
343 CN_UINT32 Exhaust Fan Mode 0 = balanced, 2 = exhaust only
344 CN_UINT32 ?? MANUAL MODE
345 CN_UINT32 0
346 CN_UINT32 0
369 CN_UINT8 Analog Input 0-10V 1 0
370 CN_UINT8 Analog Input 0-10V 2 0
371 CN_UINT8 Analog Input 0-10V 3 0
372 CN_UINT8 Analog Input 0-10V 4 0
384 CN_INT16 0.0
386 CN_BOOL 0
400 CN_INT16 0.0
401 CN_UINT8 0
402 CN_BOOL ?? PostHeaterPresent 0
416 CN_INT16 ComfoFond Outdoor Air Temperature -40.0
417 CN_INT16 ComfoFond Ground Temperature 10.0
418 CN_UINT8 ComfoFond GHE State Percentage 0
419 CN_BOOL ComfoFond GHE Present 0=absent, 1=present
513 CN_UINT16
514 CN_UINT16
515 CN_UINT16
516 CN_UINT16
517 CN_UINT8
518 CN_UINT8
519 CN_UINT8
520 CN_UINT8
521 CN_INT16
522 CN_INT16
523 CN_INT16
524 CN_UINT8
784 CN_UINT8 ComfoCool State 0=off, 1=on (0)
785 CN_BOOL ?? ComfoCoolCompressor State 0
801 CN_INT16 ?? T10ROOMTEMPERATURE 0.0
802 CN_INT16 ComfoCool Condensor Temperature 0.0
803 CN_INT16 ?? T23SUPPLYAIRTEMPERATURE 0.0
1024 CN_UINT16
1025 CN_UINT16
1026 CN_UINT16
1027 CN_UINT16
1028 CN_UINT16
1029 CN_UINT16
1030 CN_UINT16
1031 CN_UINT16
1056 CN_INT16
1124 CN_INT16
1125 CN_INT16
1126 CN_INT16
1127 CN_INT16
1281 CN_UINT16
1282 CN_UINT16
1283 CN_UINT16
1284 CN_UINT16
1285 CN_UINT16
1286 CN_UINT16
1287 CN_UINT16
1288 CN_UINT16
1297 CN_BOOL
1298 CN_BOOL
1299 CN_BOOL
1300 CN_BOOL
1301 CN_BOOL
1302 CN_BOOL
1303 CN_BOOL
1304 CN_BOOL