Carrier CCU - ModBus Register Mapping

13 - BUS FOR CONNECTION TO AN RS485 MODBUS CMS
Register No. Description Format Type Unit Min Max No adjustment Scale
1 Controller type Decimal R 43 = CCU Controller
3 and 4 P258 Controlled temperature Float R
5 and 6 P255 Controlled temperature Float R °C -40,0 99,9 1
7 and 8 P256 Controlled humidity Float R % RH 0 100 1
9 and 10
P250 Temperature setpoint in cooling
mode
Float R °C 8,0 35,0
11 and 12
P251 Temperature setpoint in heating
mode
Float R °C 10,0 35,0
13 and 14 P265 Outdoor humidity Float R % RH 0 100 1
15 and 16 P269 Air ow rate Float R m³/h 0 99999
17 and 18 P370 Measured temperature (J1,1-2) Float R °C -40,0 99,9 1
19 and 20
P371 Temperature received for control
by ModBus
Float R/W °C -40,0 99,99 0,1 1
21 and 22 P372 Measured temperature Float R °C -40,0 99,9 1
23 and 24 P373 percentage of external signal Float R % 0 100 1
32 and 33
P303 operating-hour meter for
compressor 1
Float R h 0 999999 1
34 and 35
P307 operating-hour meter for
compressor 2
Float R h 0 999999 1
36 and 37
P321 stage 1 electric heater operating-
hour meter
Float R h 0 999999 1
38 and 39
P323 stage 2 electric heater operating-
hour meter
Float R h 0 999999 1
40 and 41
P331 supply air fan operating-hour
meter
Float R h 0 999999 1
48 P290 heating coil percentage Decimal R % 0 100 1
49 P291 cooling coil percentage Decimal R % 0 100 1
50 P294 humidier percentage Decimal R % 0 100 1
51 P295 air ow rate percentage Decimal R % 0 100 1
52 P296 fresh air percentage Decimal R % 0 100 1
53 P297 electric heater percentage Decimal R % 0 100 1
257 and 258
P103 temperature setpoint in cooling
mode
Float R/W °C 8,0 45,0 0,1 1
259 and 260
P106 temperature setpoint in heating
mode
Float R/W °C 10,0 35,0 0,1 1
261
P109 humidity setpoint during
dehumidication
Decimal R/W % RH 20 90 1 1
262
P115 humidity setpoint during
humidication
Decimal R/W % RH 20 90 1 1
263 and 264
P144 xed setpoint shift in cooling
mode
Float R/W °C 0,0 30,0 0,1 1
265 and 266
P145 xed setpoint shift in heating
mode
Float R/W °C 0,0 30,0 0,1 1
300 and 301 P146 Air ow rate setpoint Float R/W m³/h 4000 40000 1 1
512 P101 year Decimal R/W 0 99 1 1
513 P101 month Decimal R/W 1 12 1 1
514 P101 day of the month Decimal R/W 1 31 1
515 P101 day of the week Decimal R/W
1:Monday
2:Tuesday
3:Wednesday
4:Thursday
5:Friday
6:Saturday
7:Sunday
516 P102 time Decimal R/W h 0 23 1 1
517 P102 minute Decimal R/W mins 0 59 1 1
34