Basic Documentation
Table Of Contents
- 1 About this document
- 2 Overview
- 3 Notes
- 4 Functions
- 4.1 Temperature control
- 4.2 Operating modes
- 4.3 Room temperature setpoint
- 4.4 Application overview
- 4.5 Additional functions
- 4.6 Control sequences
- 4.7 Control outputs
- 4.8 Fan control
- 4.9 Multifunctional input, digital input
- 4.10 Handling system faults
- 4.11 Modbus RTU mode
- 4.12 Communication objects
- 4.13 Control parameters
- 5 Connection
- 6 Technical data
- 7 Dimensions
- Index
Functions
Communication objects
4
48 | 66
A6V12114068_en--_c
4.12.2 Description of communication objects
Read
Write
Object no.
Object
Related parameter
Address (Decimal)
Register length (bytes)
Read only (RO) or Read/Write
(R/W)
Function code (HEX)
0x03--Read holding registers
0x04--Read input registers
0x06--Write single register
0x10--Write multiple registers
Special process
Default value
Data value range
(Decimal)
1
Software version
-
0001
1
RO
0x04
-
-
-
102 = V1.0.2
2
Room operating mode: State
-
0002
1
RO
0x04
-
-
0x02
0x01 = Protection
0x02 = Comfort
0x03 = Economy
0x11 = Auto Protection
0x12 = Auto Comfort
0x13 = Auto Economy
0x22 = Temp Comfort mode
3
Fan output
-
0003
1
RO
0x04
-
-
0
0 = Fan off
1 = Low fan
2 = Medium fan
3 = High fan
4
Room temperature
-
0004
1
RO
0x04
-
x50
21
-30…80 °C
-100 = Out of service
5
Room temperature: Current
setpoint
-
0005
1
RO
0x04
-
x50
21
5...40 ℃
0 = OFF
6
Heating output
-
0006
1
RO
0x04
-
-
0
0...100
7
Cooling output
-
0007
1
RO
0x04
-
-
0
0...100
8
B1 or X1 (AI)
-
0008
1
RO
0x04
-
x50
-
-20…70 °C
-100 = Out of service
9
S1 or X2 (AI)
-
0009
1
RO
0x04
-
x50
-
-20…70 °C
-100 = Out of service
10
Fan operation
-
0010
1
RO
0x04
-
-
0
0 = No fan
1 = Manual
2 = Automatic
11
B1 or X1 (DI)
-
0011
1
RO
0x04
-
-
-
0 = OFF
1 = ON
12
S1 or X2 (DI)
-
0012
1
RO
0x04
-
-
-
0 = OFF
1 = ON
13
X1 monitor input (AI)
(RDF660MB only)
-
0013
1
RO
0x04
-
-
-
-20…70 °C
-100 = Out of services
14
X1 monitor input (DI)
(RDF660MB only)
-
0014
1
RO
0x04
-
-
-
0 = OFF
1 = ON
15
X2 monitor input (AI)
(RDF660MB only)
-
0015
1
RO
0x04
-
-
-
-20…70 °C
-100 = Out of services
16
X2 monitor input (DI)
(RDF660MB only)
-
0016
1
RO
0x04
-
-
-
0 = OFF
1 = ON
17
Fault information
-
0101
1
RO
0x04
-
-
0
0: No alarm
Any bit set to 1 stands for an alarm
or error defined as follows:
Bit0: (Er1) Built-in sensor error
Bit1: (AL1) External fault input 1
Bit2: (AL2) External fault input 2
Bit3: (Er3) Floor heating
Temperature error
Bit4: (Er2) EEPROM error
Bit5: (FIL) Filter dirty
18
Device address
P81
0001
1
R/W
0x03
0x06
-
1
1…247
19
Modbus baud rate
P82
0002
1
R/W
0x03
0x06
-
2
1 = 9600 bps
2 = 19200 bps
3 = 38400 bps
4 = 57600 bps