NRT405F901 manual
Chapter 17
Modbus signals
40
Name of signal
Type
Modbus
address
Default setting
Description
RC_Setp_X.NRTControllerMode
X,3
18
3
Control mode selection:
2= Heating or Cooling via
change-over
3 = Heating/Cooling
4 = Electric heating
RC_Setp_X.NRTCVHeatType
X,3
19
0
Type of actuator, heating:
0 = 0…10 V
1 = 2…10 V
2 = 10…2 V
3 = 10…0 V
RC_Setp_X.NRTCVCoolType
X,3
20
0
Type of actuator, cooling
RC_Setp_X.NRTCVHeatExerciseInterv
al
X,3
21
23
Time (in hours) between
exercise of heating
actuator.
RC_Setp_X.NRTCVCoolExerciseInterv
al
X,3
22
23
Time (in hours) between
exercise of cooling
actuator.
Not used in this model
X,3
23
-
RC_Setp_X.NRTAi1
X,3
24
0
Signal connected on AI1:
0 = Not used (Internal
Room sensor used)
1 = External Room sensor
Not used in this model
X,3
25-27
-
RC_Setp_X.NRTDi2
X,3
28
N/A
Not used (Signal connected
on DI2:
1 = Open window
2 = Condensation alarm)
RC_Setp_X.NRTDi3
X,3
29
N/A
Not used
RC_Setp_X.NRTUi1
X,3
30
0
Signal connected on UI1:
0 = Not used
1 = Change-over sensor,
digital
2 = Change-over sensor,
analogue
Not used in this model
X,3
31 - 41
-
RC_Setp_X.NRTUo1
X,3
42
1
Signal connected on UO1:
0 = Not used
1 = Thermo valve, heating
2 = Thermo valve, cooling
RC_Setp_X.NRTUo2
X,3
43
2
Signal connected on UO2
RC_Setp_X.NRTModbusSlaveAddr
X,3
44
Factory set
Address Modbus slave
RC_Setp_X.NRTModbusParity
X,3
45
2
Modbus parity bit:
0 = No parity
1 = Odd parity
2 = Even parity
RC_Setp_X.NRTModbusCharTimeout
X,3
46
3
Modbus timeout for
characters (t1.5), in ms.
Should be 1.5 times a
character, ie. at least 2 ms.
