SIEMENS RS485 Flush Mounted Room Thermostat User Manual
Modbus
RS485 Modbus RTU
Interface type
Wire (ref.): 16 AWG, 1 pair, shielded serial
line with 1.5 mm2 and length < 1200 m
Bus current
Max. 50 mA
Bus topology: See Modbus manual (Modbus over serial line specification and
Operational data
Switching differential, adjustable
Heating
Cooling
(P30)
(P31)
2 K (0.5…6 K)
1 K (0.5…6 K)
Setpoint setting and setpoint range
Comfort
(P08)
21 °C (5…40 °C)
Economy
Protection
(P11-P12)
(P65-P66)
15 °C/30 °C (OFF, 5…40 °C)
8 °C/OFF (OFF, 5…40 °C)
Selectable (0, 1, 2, 9)
Multifunctional input B1 (RDF660MB/MM
only)
Input default value
(P38)
9: H/C changeover (DI)
Selectable (0, 3, 10, 11)
Multifunctional input S1 (RDF660MB/MM
only)
Input default value
(P40)
3: Window contact (DI)
Multifunctional inputs X1/X2 (RDF660MB
only)
Selectable (0…11)
Input X1
3 (P38) Window contact (DI)
Input X2
1 (P40) External temperature sensor
Built-in room temperature sensor
Measuring range
0…49 ° C
< ±0.5 K
± 5 K
Accuracy at 25 ° C
Temperature calibration range
Settings and display resolution
Setpoint
0.5 ° C
0.5 ° C
Current temperature value displayed
11
Siemens
A6V12005486_en--_d
2022-11-14
Smart Infrastructure
| General | Details |
|---|---|
| Name | SIEMENS RS485 Flush Mounted Room Thermostat User Manual |
| Make | SIEMENS |
| Language | English |
| Filetype | PDF (Download) |
| File size | 1.07 MB |
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