nilan Compact P Polar EK 6 kW CTS 700 User manual

20010008E – Standard document template
Nilan A/S ● Nilanvej 2 ● 8722 Hedensted ● Danmark Tlf [phone] ● Fax [phone] ●
[email protected] ● www.nilan.dk
30030066
NILAN - CTS700
Modbus User Guide
Author
Document revision
Status
Last updated
Pages
Artem Kostin
3
Final
20180420
20

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Date: 20180420
Modbus User Guide
Responsible: AKO
20010008E – Standard document template
Nilan A/S ● Nilanvej 2 ● 8722 Hedensted ● Danmark Tlf [phone] ● Fax [phone] ●
[email protected] ● www.nilan.dk
Table of Contents
1. Revision history .................................................................................................................. 4
2. References ......................................................................................................................... 4
3. Abbreviations and terms...................................................................................................... 4
4. Introduction ....................................................................................................................... 4
5. General Provisions .............................................................................................................. 4
5.1. Addressing .................................................................................................................. 4
5.2. Using PLC ................................................................................................................... 4
5.3. System Device Addressing ............................................................................................ 5
5.4. Console application ..................................................................................................... 5
6. Modbus Registers Description ............................................................................................. 5
6.1. Control registers .......................................................................................................... 5
6.2. Ventilation................................................................................................................... 5
6.2.1. Filter settings ....................................................................................................... 5
6.2.2. Outdoor air filter................................................................................................... 5
6.2.3. Extract air filter .................................................................................................... 6
6.2.4. Operation mode.................................................................................................... 6
6.2.5. Fan speed settings ................................................................................................ 6
6.2.6. Humidity control ................................................................................................... 6
6.2.7. Active cooling settings ........................................................................................... 6
6.2.8. Ventilation at low outdoor temperature................................................................... 7
6.2.9. CO2 control .......................................................................................................... 7
6.2.10. After heating element.......................................................................................... 7
6.2.11. Temperature regulation ....................................................................................... 7
6.2.12. Temperature overview ......................................................................................... 7
6.2.13. Frost protection or de-icing .................................................................................. 8
6.2.13.1. External setting: .......................................................................................... 8
6.2.13.2. Polar setting: ............................................................................................... 8
6.2.13.3. EHD setting:................................................................................................ 8
6.2.13.4. BAH setting: ................................................................................................ 9
6.2.14. De-icing heat exchanger ...................................................................................... 9
6.2.15. De-icing heat pump............................................................................................. 9
6.3. Hot water production ................................................................................................... 9
6.3.1. DHW domestic hot water....................................................................................... 9
6.3.1.1. Standby functions .......................................................................................... 9
6.3.1.2. Hot water settings ......................................................................................... 9
6.3.1.3. Antilegionella settings .................................................................................. 10
6.3.1.4. Compressor settings hot water production ..................................................... 10
6.3.1.5. Temperature overview.................................................................................. 10
6.3.2. SHW pre-heating domestic hot water ................................................................... 10
6.3.2.1. Hot water settings ....................................................................................... 10
6.3.2.2. Temperature overview.................................................................................. 10
6.3.3. DHW supplement domestic hot water ................................................................... 11
6.4. Central heating .......................................................................................................... 11
6.4.1. Standby functions ............................................................................................... 11
6.4.2. Cooling and heating at the same time................................................................... 11
6.4.3. Temperature regulation GEO................................................................................ 11
6.4.4. Temperature regulation AIR ................................................................................. 12
6.4.5. Buffer tank settings............................................................................................. 12

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Modbus User Guide
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[email protected] ● www.nilan.dk
6.4.6. Outdoor weather compensation ........................................................................... 12
6.4.7. Hot water production........................................................................................... 13
6.4.8. Cooling with GEO................................................................................................ 13
6.4.9. Cooling with AIR................................................................................................. 13
6.4.10. Compressor settings GEO .................................................................................. 13
6.4.11. Limited fan speed outdoor unit AIR .................................................................... 13
6.4.12. De-icing outdoor unit AIR .................................................................................. 13
6.4.13. Fan settings AIR................................................................................................ 14
6.4.14. Compressor settings AIR.................................................................................... 14
6.5. General settings......................................................................................................... 14
6.5.1. Language........................................................................................................... 14
6.5.2. Smart Grid ......................................................................................................... 14
6.5.3. Smart Grid Hot water settings.............................................................................. 14
6.5.4. Smart Grid Central heating settings ...................................................................... 15
6.5.4.1. At low electricity prices................................................................................. 15
6.5.4.2. At overcapacity of electricity ......................................................................... 15
6.5.5. Service............................................................................................................... 15
6.6. Information ............................................................................................................... 15
6.6.1. Compact P all device data.................................................................................... 15
6.6.2. GEO all devices data ........................................................................................... 16
6.6.3. AIR9 all devices data........................................................................................... 17
6.8. Alarm list .................................................................................................................. 17
6.8.1. Alarm list control................................................................................................. 17
6.8.2. Alarm list .......................................................................................................... 18

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Modbus User Guide
Responsible: AKO
20010008E – Standard document template
Nilan A/S ● Nilanvej 2 ● 8722 Hedensted ● Danmark Tlf [phone] ● Fax [phone] ●
[email protected] ● www.nilan.dk
1. Revision history
Date
Author
Comment
Revision
Status
20180228
AKO
Document created
1
Draft
20180301
AKO
Added information about console application
2
Draft
20180420
AKO
Added registers: 20004, 20223
3
Final
2. References
•Modbus protocol specification:
http://modbus.org/docs/Modbus_Application_Protocol_V1_1b3.pdf
•Modbus over TCP/IP:
http://modbus.org/docs/Modbus_Messaging_Implementation_Guide_V1_0b.pdf
3. Abbreviations and terms
Abbreviation/term
Description
PLC
Programmable Logic Controller
4. Introduction
This document, the Modbus Model Guide, describe Modbus register model of NILAN CTS-700.
5. General Provisions
In this chapter described general provisions of using Modbus protocol on NILAN CTS-700.
Columns description:
1. Register Number – Contain address of register in Modbus. (See Using PLC).
2. Slave ID – Contain slave address of target board (See System Device Addressing).
3. Function – Short description of register value.
4. R – Read permission (“+” - Reading is allow, “-” - Reading is deny).
5. W – Write permission (“+” - Writting is allow, “-” - Writting is deny).
6. Reset – If marked with “+” value will be applied after restart of the system.
7. Value – Contain all possible value of the register. Some of the register, which has Function
“Apply value” must be write with specific key for applying of the parameter.
5.1. Addressing
Modbus client connect to a system using Modbus RTU over TCP/IP. It means that for connect to
the system client must establish connection to board's IP address to port 502
Board's IP address by default set to 192.168.5.107 and can be changed by Modbus (See Fejl!
Henvisningskilde ikke fundet.) or Touch Display.
5.2. Using PLC
In case using of PLC after connect need read register 20003 . If read data is equal to “-1” – all of
the registers number (column 1) must be incremented for 1. Otherwise – register
addressing changes no require.

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5.3. System Device Addressing
The CTS-700 can include up-to 3 boards. Due of this to access to them must be used following
slave ID:
System
Boards amount
Address
Compact P
1
Compact P - 1
Compact P + GEO
2
Compact P – 1
GEO – 4
Compact P + AIR9
3
Compact P – 1
AIR9 – 4
5.4. Console application
For testing a Modbus register model were implemented console application. It is called Modbus
Master Console. The Modbus Master Console provide possibility to read and write data trough
Modbus. It is support Modbus functions: 3, 4, 6, 16. For connection should be used Board IP
address and Slave board ID according to System Device Addressing. Register number must be
used with any changes of address.
6. Modbus Registers Description
6.1. Control registers
Register
Number
Slave
ID
Function
R
W
Reset
Values
20000
1
Reset target board (reset key:
57005)
-
+
57005 – must be write to
restart system
20002
1
PLC clarification of addressing
+
-
Constant value: -1 or 65535
20003
1
PLC clarification of addressing
+
-
Constant value: 0
20004
1
Request saving data flash on both
system (reset key: 48815)
-
+
48815 – must be write for
storing value in the system
6.2. Ventilation
6.2.1. Filter settings
Register
Number
Slave
ID
Function
R
W
Reset
Values
20100
1
Set ventilation on pause
+
+
0 - Off; 1 - On
6.2.2. Outdoor air filter
Register
Number
Slave
ID
Function
R
W
Reset
Values
20102
1
Outdoor air filter Days between filter
change
+
+
30 <-> 180
20103
1
Outdoor air filter Days to next filter
change
+
-
30 <-> 180

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6.2.3. Extract air filter
Register
Number
Slave
ID
Function
R
W
Reset
Values
20106
1
Extract air filter Days between filter
change
+
+
30 <-> 180
20107
1
Extract air filter Days to next filter
change
+
-
30 <-> 180
6.2.4. Operation mode
Register
Number
Slave
ID
Function
R
W
Reset
Values
20120
1
Operating mode
+
+
0 - Auto; 1 - Cooling; 2 -
Heating
6.2.5. Fan speed settings
Register
Number
Slave
ID
Function
R
W
Reset
Values
20140
1
Fan speed level 1 - supply air
+
-
20 <-> 100
20141
1
Fan speed level 1 - extract air
+
-
20 <-> 100
20142
1
Fan speed level 2 - supply air
+
-
20 <-> 100
20143
1
Fan speed level 2 - extract air
+
-
20 <-> 100
20144
1
Fan speed level 3 - supply air
+
-
20 <-> 100
20145
1
Fan speed level 3 - extract air
+
-
20 <-> 100
20146
1
Fan speed level 4 - supply air
+
-
20 <-> 100
20147
1
Fan speed level 4 - extract air
+
-
20 <-> 100
6.2.6. Humidity control
Register
Number
Slave
ID
Function
R
W
Reset
Values
20160
1
Low humidity level
+
+
15 <-> 45
20161
1
Fan speed at low humidity
+
+
101 - Level 1; 102 - Level 2;
103 - Level 3
20162
1
Fan speed at high humidity
+
+
102 - Level 2; 103 - Level 3;
104 - Level 4
20163
1
Timeout high humidity
+
+
0 <-> 180
20164
1
Average humidity
+
-
0 <-> 100
6.2.7. Active cooling settings
Register
Number
Slave
ID
Function
R
W
Reset
Values
20180
1
Allow active cooling
+
+
On/Off
20181
1
High fan speed when cooling
+
+
On/Off
20182
1
Fan speed when cooling
+
+
103 - Level 3; 104 - Level 4
20183
1
Minimum cooling supply temp (C)
+
+
5 <-> 30
20184
1
Cooling priority to hot water
+
+
On/Off

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6.2.8. Ventilation at low outdoor temperature
Register
Number
Slave
ID
Function
R
W
Reset
Values
20200
1
Low fan speed at low outdoor
temperature
+
+
0 - Off; 1 - On
20201
1
Below outdoor temperature
+
+
-20 <-> 10
20202
1
Fan speed at low outdoor
temperature
+
+
101 - Level 1; 102 - Level 2;
6.2.9. CO2 control
Register
Number
Slave
ID
Function
R
W
Reset
Values
20220
1
CO2 level, fan speed 2
+
+
400 <-> 800
20221
1
CO2 level, fan speed 3
+
+
800 <-> 1200
20222
1
CO2 level, fan speed 4
+
+
1200 <-> 1600
6.2.10. After heating element
Register
Number
Slave
ID
Function
R
W
Reset
Values
20240
1
After heating element type
+
-
-
0 - None; 1 - Water ; 2 -
Electrical
20241
1
Min. supply air temperature (C)
+
+
5 <-> 30
20242
1
Max. Supply air temperature (C)
+
+
5 <-> 50
6.2.11. Temperature regulation
Register
Number
Slave
ID
Function
R
W
Reset
Values
20260
1
Wanted room temperature (C)
+
+
5 <-> 40
20261
1
Summer/winter mode switch (C)
+
+
5 <-> 30
20262
1
Offset Summer/winter switch (C)
+
+
0 <-> 10
20263
1
Master sensor indoor temperature
+
-
0 - T3; 1 - Te x t
20264
1
Temperature regulation deadband
+
+
0 <-> 10
20266
1
Bypass damper offset (C)
+
+
0 <-> 10
20267
1
Regulation deadband external room
heating
+
+
0 <-> 10
6.2.12. Temperature overview
Register
Number
Slave
ID
Function
R
W
Reset
Values
20280
1
Text room temperature ©
+
-
-40 <-> 160
20281
1
Tex t room temperature State
+
-
0 - Ok; 1 - Fault; 2 - Missing; 3
- Missing
20282
1
T1 outdoor air temperature (C)
+
-
-40 <-> 160
20283
1
T1 outdoor air temperature State
+
-
0 - Ok; 1 - Fault; 2 - Missing; 3
- Missing

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20284
1
T2 supply air temperature (C)
+
-
-40 <-> 160
20285
1
T2 supply air temperature State
+
-
0 - Ok; 1 - Fault; 2 - Missing; 3
- Missing
20286
1
T3 extract air, room temperature (C)
+
-
-40 <-> 160
20287
1
T3 extract air, room temperature
State
+
-
0 - Ok; 1 - Fault; 2 - Missing; 3
- Missing
20288
1
T4 discharge air, after heat
exchanger (C)
+
-
-40 <-> 160
20289
1
T4 discharge air, after heat
exchanger State
+
-
0 - Ok; 1 - Fault; 2 - Missing; 3
- Missing
20290
1
T5 discharge air, after heat pump (C)
+
-
-40 <-> 160
20291
1
T5 discharge air, after heat pump
State
+
-
0 - Ok; 1 - Fault; 2 - Missing; 3
- Missing
20292
1
T6 evaporator temperature (C)
+
-
-40 <-> 160
20293
1
T6 evaporator temperature State
+
-
0 - Ok; 1 - Fault; 2 - Missing; 3
- Missing
20294
1
T7 supply air temperature after-
heater (C)
+
-
-40 <-> 160
20295
1
T7 supply air temperature after-
heater State
+
-
0 - Ok; 1 - Fault; 2 - Missing; 3
- Missing
20296
1
T8 outdoor air before pre-heater
+
-
-40 <-> 160
20297
1
T8 outdoor air before pre-heater
State
+
-
0 - Ok; 1 - Fault; 2 - Missing; 3
- Missing
20298
1
T9 temperature in water after heater
+
-
-40 <-> 160
20299
1
T9 temperature in water after heater
State
+
-
0 - Ok; 1 - Fault; 2 - Missing; 3
- Missing
6.2.13. Frost protection or de-icing
Register
Number
Slave
ID
Function
R
W
Reset
Values
20300
1
Frost protection
+
-
0 - None; 1 - External/Polar; 2 -
EHD; 3 - BAH
6.2.13.1. External setting:
Register
Number
Slave
ID
Function
R
W
Reset
Values
20320
1
T8 temperature sensor
+
+
0 - Off; 1 - On
6.2.13.2. Polar setting:
Register
Number
Slave
ID
Function
R
W
Reset
Values
20340
1
Start frost protection below (C)
+
+
1.0 <-> 5.0
20341
1
Set point for pre-heater T4 (C)
+
+
1.0 <-> 4.0
6.2.13.3. EHD setting:
Register
Number
Slave
ID
Function
R
W
Reset
Values
20360
1
EHD offset (C)
+
+
0 <-> 10
20361
1
EHD hold time (min)
+
+
0 <-> 24
20362
1
EHD stabilisation (min)
+
+
1 <-> 10

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6.2.13.4. BAH setting:
Register
Number
Slave
ID
Function
R
W
Reset
Values
20380
1
BAH under temperature (C)
+
+
-10 <-> 10
20381
1
BAH above temperature (C)
+
+
15 <-> 35
20382
1
BAH regulation deadband (C)
+
+
0 <-> 10
6.2.14. De-icing heat exchanger
Register
Number
Slave
ID
Function
R
W
Reset
Values
20400
1
Outdoor temperature for de-icing (C)
+
+
-10 <-> 1
20401
1
Maximum time de-icing (min)
+
+
10 <-> 90
20402
1
Minimum time between de-icing
(min)
+
+
15 <-> 180
20403
1
Extract fan speed during de-icing
+
-
1 / 2 / 3 / 4
20404
1
Supply fan speed during de-icing
+
+
0 - Normal; 1 - Extract
6.2.15. De-icing heat pump
Register
Number
Slave
ID
Function
R
W
Reset
Values
20420
1
Evaporator defrost T6
+
+
0 - Off; 1 - On
20421
1
Maximum time de-icing (min)
+
+
1 <-> 30
20422
1
Minimum time between de-icing
(min)
+
+
1 <-> 180
20423
1
Start de-icing (C)
+
+
-15 <-> 0
20424
1
Stop de-icing (C)
+
+
0 <-> 15
6.3. Hot water production
6.3.1. DHW domestic hot water
6.3.1.1. Standby functions
Register
Number
Slave
ID
Function
R
W
Reset
Values
20440
1
Pause hot water production
+
+
0 - Off; 1 - On
20441
1
Pause duration days
+
+
1 <-> 180
6.3.1.2. Hot water settings
Register
Number
Slave
ID
Function
R
W
Reset
Values
20460
1
Hot water set point (C)
+
+
10 <-> 60
20461
1
Frost protection hot water tank (C)
+
+
0 - Off; 1 - On
20462
1
El-supplement activated below (C)
+
+
30 <-> 65
20463
1
Scalding protection (C)
+
+
40 <-> 80
20464
1
Electrical supplement heater
+
+
0 - Off; 1 - On

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6.3.1.3. Antilegionella settings
Register
Number
Slave
ID
Function
R
W
Reset
Values
20480
1
Start anti legionella manuel
+
+
0 - Off; 1 - On
20481
1
Automatic anti legionella
+
+
0 - Off; 1 - Weekly; 2 - Monthly
20482
1
Day for antilegionella
+
+
1 <-> 28
20483
1
Time for antilegionella
+
+
0 <-> 23
6.3.1.4. Compressor settings hot water production
Register
Number
Slave
ID
Function
R
W
Reset
Values
20500
1
Minimum time between start-up
+
-
0 <-> 10
20501
1
Time between stop and start-up
+
-
0 <-> 10
6.3.1.5. Temperature overview
Register
Number
Slave
ID
Function
R
W
Reset
Values
20520
1
T11 top temperature in DHW water
tank (C)
+
-
-40 <-> 160
20521
1
T11 top State in DHW water tank
+
-
0 - Ok; 1 - Fault; 2 - Missing; 3
- Missing
20522
1
T12 bottom temperature in DHW
water tank (C)
+
-
-40 <-> 160
20523
1
T12 top State in DHW water tank
+
-
0 - Ok; 1 - Fault; 2 - Missing; 3
- Missing
6.3.2. SHW pre-heating domestic hot water
6.3.2.1. Hot water settings
Register
Number
Slave
ID
Function
R
W
Reset
Values
20540
4
Wanted water temperature (C)
+
+
10 <-> 45
20541
4
Frostprotection SHW water tank
+
+
0 - Off; 1 - On
20542
4
Minimum water temperature (C)
+
+
10 <-> 50
20543
4
Scalding protection T21 (C)
+
+
40 <-> 90
20544
4
Electrical supplement heater
+
+
0 - Off; 1 - On
20545
4
Maximum heat pump temperature
T17 (C)
+
+
40 <-> 55
6.3.2.2. Temperature overview
Register
Number
Slave
ID
Function
R
W
Reset
Values
20580
4
T21 top temperature in DHW water
tank (C)
+
-
-40 <-> 160

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20581
4
T21 top State in DHW water tank
+
-
0 - Ok; 1 - Fault; 2 - Missing; 3
- Missing
20582
4
T22 bottom temperature in DHW
water tank (C)
+
-
-40 <-> 160
20583
4
T22 top State in DHW water tank
+
-
0 - Ok; 1 - Fault; 2 - Missing; 3
- Missing
6.3.3. DHW supplement domestic hot water
Register
Number
Slave
ID
Function
R
W
Reset
Values
20584
4
Setpoint supplement heating (C)
+
+
10 <-> 45
20585
4
Maximum heat pump temperature
T17 (C)
+
+
40 <-> 55
6.4. Central heating
6.4.1. Standby functions
Register
Number
Slave
ID
Function
R
W
Reset
Values
20600
4
Pause central heating
+
+
0 - Off; 1 - On
20601
4
Pause duration (days)
+
+
1 <-> 180
20602
4
Power central heating
+
+
0 - Off; 1 - On
6.4.2. Cooling and heating at the same time
Register
Number
Slave
ID
Function
R
W
Reset
Values
20620
4
Cooling and heating at the same
time
+
+
0 - Off; 1 - On
6.4.3. Temperature regulation GEO
Register
Number
Slave
ID
Function
R
W
Reset
Values
20640
4
Setpoint supply flow temperature (C)
+
+
5 <-> 50
20641
4
Temperature regulation deadband
(C)
+
+
0 <-> 5
20642
4
Maximum supply flow (C)
+
+
20 <-> 55
20643
4
Electrical supplement heater
+
+
0 - Off; 1 - On
20644
4
Delay electrical supplement heater
(min)
+
+
0 <-> 60
20645
4
T13 brine before evaporator (C)
+
-
-40 <-> 160
20646
4
T13 brine before evaporator State
+
-
0 - Ok; 1 - Fault; 2 - Missing; 3
- Missing
20647
4
T14 brine after evaporator (C)
+
-
-40 <-> 160
20648
4
T14 brine after evaporator State
+
-
0 - Ok; 1 - Fault; 2 - Missing; 3
- Missing
20649
4
T16 before condenser (C)
+
-
-40 <-> 160
20650
4
T16 before condenser State
+
-
0 - Ok; 1 - Fault; 2 - Missing; 3
- Missing

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Modbus User Guide
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20010008E – Standard document template
Nilan A/S ● Nilanvej 2 ● 8722 Hedensted ● Danmark Tlf [phone] ● Fax [phone] ●
[email protected] ● www.nilan.dk
20651
4
T17 after condenser (C)
+
-
-40 <-> 160
20652
4
T17 after condenser State
+
-
0 - Ok; 1 - Fault; 2 - Missing; 3
- Missing
20653
4
T18 supply flow (C)
+
-
-40 <-> 160
20654
4
T18 supply flow State
+
-
0 - Ok; 1 - Fault; 2 - Missing; 3
- Missing
20655
4
T20 outdoor temperature (C)
+
-
-40 <-> 160
20656
4
T20 outdoor temperature State
+
-
0 - Ok; 1 - Fault; 2 - Missing; 3
- Missing
6.4.4. Temperature regulation AIR
Register
Number
Slave
ID
Function
R
W
Reset
Values
20680
4
Setpoint supply flow temperature (C)
+
+
5 <-> 50
20681
4
Temperature regulation deadband
(C)
+
+
0 <-> 5
20682
4
T16 before condenser (C)
Not working
20683
4
T16 before condenser State
Not working
20684
4
T17 supply flow outdoor unit (C)
+
-
-40 <-> 160
20685
4
T17 supply flow outdoor unit State
+
-
0 - Ok; 1 - Fault; 2 - Missing; 3
- Missing
20686
4
T18 supply flow buffer tank (C)
+
-
-40 <-> 160
20687
4
T18 supply flow buffer tank State
+
-
0 - Ok; 1 - Fault; 2 - Missing; 3
- Missing
20688
4
T20 outdoor temperature (C)
+
-
-40 <-> 160
20689
4
T20 outdoor temperature State
+
-
0 - Ok; 1 - Fault; 2 - Missing; 3
- Missing
20690
4
T23 evaporator (C)
+
-
-40 <-> 160
20691
4
T23 evaporator State
+
-
0 - Ok; 1 - Fault; 2 - Missing; 3
- Missing
6.4.5. Buffer tank settings
Register
Number
Slave
ID
Function
R
W
Reset
Values
20700
4
Electrical supplement heater
+
+
0 - Off; 1 - On
20701
4
Maximum buffer temperature (C)
+
+
20 <-> 50
20702
4
Minimum buffer temperature (C)
+
+
10 <-> 50
20703
4
Delay electrical supplement heater
+
+
0 <-> 60
6.4.6. Outdoor weather compensation
Register
Number
Slave
ID
Function
R
W
Reset
Values
20720
4
Regulation mode
+
+
0 - Setpoint; 1 - Curve
20721
4
Supply temperature (C) at -20 C
outdoor temperature
+
+
0 <-> 50
20722
4
Supply temperature (C) at -10 C
outdoor temperature
+
+
0 <-> 50
20723
4
Supply temperature (C) at 0 C
outdoor temperature
+
+
0 <-> 50
20724
4
Supply temperature (C) at 10 C
outdoor temperature
+
+
0 <-> 50

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Modbus User Guide
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20010008E – Standard document template
Nilan A/S ● Nilanvej 2 ● 8722 Hedensted ● Danmark Tlf [phone] ● Fax [phone] ●
[email protected] ● www.nilan.dk
20725
4
Supply temperature (C) at 20 C
outdoor temperature
+
+
0 <-> 50
20726
4
Curve offset
+
+
-10 <-> 10
6.4.7. Hot water production
Register
Number
Slave
ID
Function
R
W
Reset
Values
20740
4
Hot water production wanted
+
-
0 - Off; 1 - SHW; 2 - DHW
20741
4
Compressor level (%)
+
+
0 <-> 100
6.4.8. Cooling with GEO
Register
Number
Slave
ID
Function
R
W
Reset
Values
20760
4
Passive cooling
+
+
0 - Off; 1 - On
20761
4
Way of cooling
+
+
0 - Floor; 1 -Fan coils
6.4.9. Cooling with AIR
Register
Number
Slave
ID
Function
R
W
Reset
Values
20780
4
Cooling
+
+
0 - Off; 1 - On
20781
4
Setpoint cooling (C)
+
+
5 <-> 25
6.4.10. Compressor settings GEO
Register
Number
Slave
ID
Function
R
W
Reset
Values
20800
4
Time between compressor start
(min)
+
-
0 <-> 10
20801
4
Minimum off time (min)
+
-
0 <-> 10
20802
4
Compressor pressure at 0V
+
-
0 <-> 10
20803
4
Compressor pressure at 10V
+
-
0 <-> 10
20804
4
Compressor heating limit
+
-
0 <-> 100
20805
4
Min. control signal compressor (V)
+
-
0 <-> 10
20806
4
Max. control signal compressor (V)
+
-
0 <-> 10
6.4.11. Limited fan speed outdoor unit AIR
Register
Number
Slave
ID
Function
R
W
Reset
Values
20820
4
Limitation above temp. (C)
+
+
0 <-> 30
20821
4
Limited (%)
+
+
20 <-> 100
6.4.12. De-icing outdoor unit AIR
Register
Number
Slave
ID
Function
R
W
Reset
Values
20840
4
Forced de-icing
+
+
0 - Off; 1 - On
20841
4
De-icing start temperature (C)
+
+
-10 <-> -1
20842
4
De-icing stop temperature (C)
+
+
-10 <-> 10

30030066-NILAN - CTS700
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Modbus User Guide
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20010008E – Standard document template
Nilan A/S ● Nilanvej 2 ● 8722 Hedensted ● Danmark Tlf [phone] ● Fax [phone] ●
[email protected] ● www.nilan.dk
20843
4
Maximum time de-icing (min)
+
+
5 <-> 60
20844
4
Minimum time between de-icing
(min)
+
+
30 <-> 90
6.4.13. Fan settings AIR
Register
Number
Slave
ID
Function
R
W
Reset
Values
20860
4
Minimum control signal (V)
+
-
0 <-> 10
20861
4
Maximum control signal (V)
+
-
0 <-> 10
6.4.14. Compressor settings AIR
Register
Number
Slave
ID
Function
R
W
Reset
Values
20880
4
Time between compressor start
(min)
+
-
0 <-> 10
20881
4
Minimum off time compressor (min)
+
-
0 <-> 10
20882
4
Low outdoor temperature (C)
+
-
-30 <-> -1
20883
4
Compressor pressure at 0V
+
-
0 <-> 10
20884
4
Compressor pressure at 10V
+
-
0 <-> 10
20885
4
Compressor heating limit
+
-
0 <-> 100
20886
4
Minimum control signal compressor
(V)
+
-
0 <-> 10
20887
4
Maximum control signal compressor
(V)
+
-
0 <-> 10
6.5. General settings
6.5.1. Language
Register
Number
Slave
ID
Function
R
W
Reset
Values
20900
1
Change language
+
+
0 – EN
32
– DA
33
– DE
44
– FI
47
– FR
72
– IT
117
– NO
128 - PL
6.5.2. Smart Grid
Register
Number
Slave
ID
Function
R
W
Reset
Values
21500
1
Smart Grid Enable
+
+
+
0 - Off; 1 - On
6.5.3. Smart Grid Hot water settings
Register
Number
Slave
ID
Function
R
W
Reset
Values

30030066-NILAN - CTS700
Page 15/20
Date: 20180420
Modbus User Guide
Responsible: AKO
20010008E – Standard document template
Nilan A/S ● Nilanvej 2 ● 8722 Hedensted ● Danmark Tlf [phone] ● Fax [phone] ●
[email protected] ● www.nilan.dk
21501
1
Raise hot water temperature (C)
+
+
0 <-> 10
21502
1
Electric supplement heater
+
+
0 - Off; 1 - On
6.5.4. Smart Grid Central heating settings
Register
Number
Slave
ID
Function
R
W
Reset
Values
6.5.4.1. At low electricity prices
Register
Number
Slave
ID
Function
R
W
Reset
Values
21503
4
Raise central heating heating temp
(C)
+
+
0 <-> 10
21504
4
Electric supplement heater
+
+
0 - Off; 1 - On
6.5.4.2. At overcapacity of electricity
Register
Number
Slave
ID
Function
R
W
Reset
Values
21505
4
Raise central heating heating temp
(C)
+
+
0 <-> 10
6.5.5. Service
Register
Number
Slave
ID
Function
R
W
Reset
Values
21520
1
System power
+
+
0 - Off; 1 - On
Register
Number
Slave
ID
Function
R
W
Reset
Values
21580
1
Fire alarm auto reset
+
+
0 - Off; 1 - On
21581
1
Lock user settings
+
+
0 - Off; 1 - On
6.6. Information
6.6.1. Compact P all device data
Register
Number
Slave
ID
Function
R
W
Reset
Values
21680
1
Product type
+
-
0 – Compact P
1 – Compact P Polar
21770
1
System state
+
-
0 – Auto
1
– Cooling
2 – Heating
21771
1
Supply fan speed
+
-
%
21772
1
Extract fan speed
+
-
%
21773
1
Bypass damper
+
-
0 – Closed
1 – Open
21774
1
After heating element
+
-
%
21775
1
Compressor state
+
-
0 – Off

30030066-NILAN - CTS700
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Modbus User Guide
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20010008E – Standard document template
Nilan A/S ● Nilanvej 2 ● 8722 Hedensted ● Danmark Tlf [phone] ● Fax [phone] ●
[email protected] ● www.nilan.dk
100 – On
21776
1
Actual air humidity
+
-
%
21778
1
CO2 level
+
-
ppm
21779
1
Fire alarm
+
-
0 – activated
1 – not activated
21780
1
User programme 1
+
-
0 – Off
1 – On
21781
1
User programme 2
+
-
0 – Off
1 – On
21782
1
User programme 2 out
+
-
0 – Off
1 – On
21783
1
Allow external cooling
+
-
0 – Off
1 – On
21784
1
Allow external heating
+
-
0 – Off
1 – On
21785
1
Anti legionella
+
-
0 – Off
1 – On
21786
1
Heat pump high pressure alarm
+
-
21787
1
Warm water sacrificial anode
+
-
1 – OK
3 – Failure
21788
1
Warm water electric supply
+
-
0 – Off
1 – On
21789
1
De-icing heat exchanger
+
-
21790
1
De-icing heat pump
+
-
21791
1
Four-way valve
+
-
0 – Open
1 – Closed
21792
1
Alarm
+
-
0 – Active
1 – Not active
21793
1
Heating or cooling blocked
+
-
21794
1
BAH brine pressostat
+
-
21795
1
Heat valve
+
-
21796
1
Hot water valve
+
-
6.6.2. GEO all devices data
Register
Number
Slave
ID
Function
R
W
Reset
Values
21839
4
Product type
+
-
8 – GEO
21840
4
System state
+
-
0 – Auto
1
– Cooling
2 – Heating
21841
4
Compressor level
+
-
%
21842
4
Brine circulation pump
+
-
%
21843
4
Central heating pump
+
-
%
21844
4
Three-way valve
+
-
0 – Heating
1 – Hot water production
21845
4
Allow external heating
+
-
0 – Allow
1 – Block
21846
4
Allow external cooling
+
-
0 – Allow
1 – Block
21847
4
Heating input
+
-
0 – None
1 – Yes
21848
4
Cooling input
+
-
0 – None
1 – Yes

30030066-NILAN - CTS700
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Date: 20180420
Modbus User Guide
Responsible: AKO
20010008E – Standard document template
Nilan A/S ● Nilanvej 2 ● 8722 Hedensted ● Danmark Tlf [phone] ● Fax [phone] ●
[email protected] ● www.nilan.dk
21850
4
SHW supplement heater
+
-
0 – Off
1
– On
21851
4
GEO supplement heater
+
-
0 – Off
1 – On
21852
4
Cooling circuit pressure
+
-
21853
4
Flow sensor
+
-
21854
4
High pressure alarm
+
-
0 – Failure
1 – Ok
21855
4
Low pressure alarm
+
-
0 – Failure
1 – Ok
21856
4
Brine pressure
+
-
0 – Failure
1 - Ok
6.6.3. AIR9 all devices data
Register
Number
Slave
ID
Function
R
W
Reset
Values
21899
4
Product type
+
-
9 – AIR
21900
4
System state
+
-
0 – Auto
1
– Cooling
2 – Heating
21901
4
Speed evaporator fan
+
-
%
21902
4
Compressor level
+
-
%
21903
4
Circulation pump outdoor unit
+
-
%
21904
4
Central heating pump
+
-
%
21905
4
Three-way valve
+
-
0 – Floor heating
1 – Hot water
21906
4
Allow external heating
+
-
0 – Allow
1 – Block
21907
4
Allow external cooling
+
-
0 – Allow
1 – Block
21908
4
Heating input
+
-
0 – None
1 - Yes
21909
4
Cooling input
+
-
0 – None
1 – Yes
21911
4
SHW sacrificial anode
+
-
21912
4
SHW supplement heater
+
-
0 – Off
1 – On
21913
4
Buffer tank supplement heater
+
-
0 – Off
1 – On
21914
4
Cooling circuit pressure
+
-
21915
4
Flow sensor
+
-
6.7. Alarm list
6.7.1. Alarm list control
Register
Number
Slave
ID
Function
R
W
Reset
Values
22490
1
Is any alarm or error present
+
-
0 - No, 1 – One or more

30030066-NILAN - CTS700
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Date: 20180420
Modbus User Guide
Responsible: AKO
20010008E – Standard document template
Nilan A/S ● Nilanvej 2 ● 8722 Hedensted ● Danmark Tlf [phone] ● Fax [phone] ●
[email protected] ● www.nilan.dk
Warning or Error present
22491
1
Reset all warning and alarms.
-
+
The value 48815 must be
written to reset all events.
6.7.2. Alarm list
Register
Number
Slave
ID
Function
R
W
Reset
Values
22500
1, 4
ID000 - (EventNone) Undefined
error
+
-
0 - Event isn't present
1 - Event is present
22501
1, 4
ID001 - (EventSystemStart) Unit
start up
+
-
0 - Event isn't present
1 - Event is present
22502
1, 4
ID002 - (EventSystemStop) Unit has
stopped
+
-
0 - Event isn't present
1 - Event is present
22505
1, 4
ID005 - (DbmRTDBVerisonNotEqual)
Error in realtime database (RTDB)
+
-
0 - Event isn't present
1 - Event is present
22507
1, 4
ID007 - (EventFilterINLETWarning)
Outdoor air filter must be changed
+
-
0 - Event isn't present
1 - Event is present
22508
1, 4
ID008 -
(EventFilterEXTHAUSTWarning)
Extract air filter must be changed
+
-
0 - Event isn't present
1 - Event is present
22512
1, 4
ID012 -
(EventHeaterOverHeatAlarm) Safety
active for electrical after heating
surface
+
-
0 - Event isn't present
1 - Event is present
22514
1, 4
ID014 - (EventHeaterFrostWarning)
Risk of ice in the water after heating
surface
+
-
0 - Event isn't present
1 - Event is present
22515
1, 4
ID015 -
(EventHeaterFrostLongAlarm)
Increased risk of ice
in the water
after heating element
+
-
0 - Event isn't present
1 - Event is present
22516
1, 4
ID016 - (EventHeaterFrostAlarm)
High risk of ice in the water after
heating element
+
-
0 - Event isn't present
1 - Event is present
22518
1, 4
ID018 -
(EventCompressorOverSwitch) Too
many compressor starts
+
-
0 - Event isn't present
1 - Event is present
22519
1, 4
ID019 - (EventProcInit) Software
initialization failure
+
-
0 - Event isn't present
1 - Event is present
22520
1, 4
ID020 - (EventDefrostingTime) De-
icing time exceeded
+
-
0 - Event isn't present
1 - Event is present
22521
1, 4
ID021 - (EventFireThermAlarm)
Brandindgang aktiveret
+
-
0 - Event isn't present
1 - Event is present
22524
1, 4
ID024 -
(EventMainTaskTimeIsExceeded) Too
long start-up of a function
+
-
0 - Event isn't present
1 - Event is present
22528
1, 4
ID028 - (EventSlaveFound) Slave
device connected
+
-
0 - Event isn't present
1 - Event is present
22529
1, 4
ID029 - (EventSlaveLost) Lost
communication with slave device
+
-
0 - Event isn't present
1 - Event is present
22531
1, 4
ID031 - (EventDefrostFail) Failure in
de-icing
+
-
0 - Event isn't present
1 - Event is present
22541
1, 4
ID041 - (EventFrostProtection)
+
-
0 - Event isn't present

30030066-NILAN - CTS700
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Date: 20180420
Modbus User Guide
Responsible: AKO
20010008E – Standard document template
Nilan A/S ● Nilanvej 2 ● 8722 Hedensted ● Danmark Tlf [phone] ● Fax [phone] ●
[email protected] ● www.nilan.dk
Frostprotection hot water tank active
1 - Event is present
22544
1, 4
ID044 - (EventAnodeFail) Failure on
anode in domestic hot water tank
+
-
0 - Event isn't present
1 - Event is present
22545
1, 4
ID045 - (EventAntiLegionella) Start
anti legionella
+
-
0 - Event isn't present
1 - Event is present
22546
1, 4
ID046 - (EventAntiLegionellaFail)
Failure in anti legionella function
+
-
0 - Event isn't present
1 - Event is present
22547
1, 4
ID047 - (EventDefrostFailW)
EventDefrostFailW
+
-
0 - Event isn't present
1 - Event is present
22549
1, 4
ID049 - (EventHeatHighPressure)
Compressor high pressure alarm
+
-
0 - Event isn't present
1 - Event is present
22562
1, 4
ID062 - (EventRTDBParamWarning)
Database errors
+
-
0 - Event isn't present
1 - Event is present
22565
1, 4
ID065 -
(EventSlaveTypeWasChangedWarn)
Changed type of slave device
+
-
0 - Event isn't present
1 - Event is present
22566
1, 4
ID066 - (EventCompressHighPress)
High pressure fault on the
compressor
+
-
0 - Event isn't present
1 - Event is present
22567
1, 4
ID067 - (EventCompressLowPress)
Lov pressure fault on the compressor
+
-
0 - Event isn't present
1 - Event is present
22568
1, 4
ID068 -
(EventNotOptimalSlaveRegulMode)
Systems operation conflict !
+
-
0 - Event isn't present
1 - Event is present
22569
1, 4
ID069 - (Event_BAH_Leak) Leaking
brine circuit BAH solution
+
-
0 - Event isn't present
1 - Event is present
22573
1, 4
ID073 -
(EventLow_T16_T17_atDefrost) T16
or T17 to low at de-icing
+
-
0 - Event isn't present
1 - Event is present
22574
1, 4
ID074 - (EventBrineLeak) Utrathed i
GEO brinekredsen
+
-
0 - Event isn't present
1 - Event is present
22575
1, 4
ID075 - (EventDeviceError) Sensor
fault
+
-
0 - Event isn't present
1 - Event is present
22577
1, 4
ID077 - (EventKlixonFault) Severe
Klixon error
+
-
0 - Event isn't present
1 - Event is present
22578
1, 4
ID078 - (EventKlixonWarning) Klixon
failure
+
-
0 - Event isn't present
1 - Event is present
22579
1, 4
ID079 -
(EventCompressHighPressWarning)
High pressure warning
+
-
0 - Event isn't present
1 - Event is present
22580
1, 4
ID080 - (EventEvapLowTemperature)
To low temper
ature in the
evaporator
+
-
0 - Event isn't present
1 - Event is present
22581
1, 4
ID081 - (EventDHW_HeaterWasOn)
Electric supplement heater in hot
water tank is on
+
-
0 - Event isn't present
1 - Event is present
22582
1, 4
ID082 - (EventDHW_HeaterWasOff)
Electric supplement heater in hot
water tank is off
+
-
0 - Event isn't present
1 - Event is present
22583
1, 4
ID083 - (EventBufferHeaterWasOn)
Electric supplement heater central
heating on
+
-
0 - Event isn't present
1 - Event is present
22584
1, 4
ID084 - (EventBufferHeaterWasOff)
+
-
0 - Event isn't present

30030066-NILAN - CTS700
Page 20/20
Date: 20180420
Modbus User Guide
Responsible: AKO
20010008E – Standard document template
Nilan A/S ● Nilanvej 2 ● 8722 Hedensted ● Danmark Tlf [phone] ● Fax [phone] ●
[email protected] ● www.nilan.dk
Electric supplement heater central
heating off
1 - Event is present
22585
1, 4
ID085 -
(EventSlaveVersionIncompatible)
Slave SW not the same as master
+
-
0 - Event isn't present
1 - Event is present
22586
1, 4
ID086 -
(EventSlaveRTDB_Incompatible)
Slave RTDB not the same as master
+
-
0 - Event isn't present
1 - Event is present
22587
1, 4
ID087 -
(EventHeatPumpOvertemperature)
No optimal regulation of slave
+
-
0 - Event isn't present
1 - Event is present
22588
1, 4
ID088 - (EventSGwasTurnedOn) The
Smart Grid function was enabled
+
-
0 - Event isn't present
1 - Event is present
22589
1, 4
ID089 - (EventSGwasTurnedOff) The
Smart Grid function was disable
+
-
0 - Event isn't present
1 - Event is present
22590
1, 4
ID090 -
(EventSGModeChangeToOption1)
The Smart Grid Low Consumption
Mode was activated.
+
-
0 - Event isn't present
1 - Event is present
22591
1, 4
ID091 -
(EventSGModeChangeToOption2)
The Smart Grid Normal m
ode was
activated.
+
-
0 - Event isn't present
1 - Event is present
22592
1, 4
ID092 -
(EventSGModeChangeToOption3)
The Smart Grid Low electricity price
mode was activated.
+
-
0 - Event isn't present
1 - Event is present
22593
1, 4
ID093 -
(EventSGM
odeChangeToOption4)
The Smart Grid Overcapacity of
electricity mode was activated
+
-
0 - Event isn't present
1 - Event is present