nilan Compact S CTS 602 User manual

Version: 3.00 19-10-2016
Software-version: 2.35 →
a
User manual
Installation and User Guide
CTS 602 by Nilan
2
VPM 360
Modbus

All rights reserved Side 1 af 16
The following information describes how to connect to Nilan CTS 602 controls by means of a
RS485 connection:
Table of Contents
Connection:.......................................................................................................................................................2
Setup: ................................................................................................................................................................2
Supported functions:.......................................................................................................................................2
Register layout:................................................................................................................................................3
Register groups........................................................................................................................................3
Input registers:..........................................................................................................................................4
Holding registers:.....................................................................................................................................8
Communication example..............................................................................................................................13
Alarm list..........................................................................................................................................................14
See specification and user manual for each plant for a further description of alarms........................14
Connection diagram......................................................................................................................................16

All rights reserved Side 2 af 16
Connection:
The Modbus is connected to PIN 2,3,6 on CN7 placed next to the USB port of the printed circuit
board
Pin 1
12 VDC output
Pin 2
COM1 - RS 485 A - Modbus
Pin 3
COM1 - RS 485 B - Modbus
Pin 4
COM2 - RS 485 A - User panel
Pin 5
COM2 - RS 485 B - User panel
Pin 6
Ground
Setup:
Protocol
Modbus (RTU mode), see http://www.modbus.org/specs.php
Node address
Default 30, Address is selectable between 1 and 247
To be changed I SERVICE Menu.
Device type
CTS 602 is a Modbus slave
Baud rate
19.200
Databits
8
Stopbits
1
Parity
Even
Packet size
Max. 255 bytes
The communication speed and parameter can not be changed.
Supported functions:
Input and holding registers are supported.
All registers are 16 bit size.
The controller will respond to the below listed Modbus message functions only.
Please note that no other function codes are supported.
Function
Name
Description
03
Read Holding Registers
Read one or more holding registers
04
Read Input Registers
Read one or more input registers
16
Preset Multiple Registers
Write one or more holding registers

All rights reserved Side 3 af 16
Register layout:
Register addresses are specified as decimal numerals.
Input registers are placed in the address area 30001..39999.
Holding registers are placed in the address area 40001..49999.
NOTE:
In the following tables, the register addresses applied in the MODBUS messages are without the
global offset. This means that if you read input register 100 with function code 04, you will get the
global address 30101.
NOTE:
All input registers can also be read as type holding register with function code 03 by adding the
offset value 10000 to the register address. No writes will be accepted in this range.
Register groups
The protocol data is grouped into the following address ranges with 100 registers in each group.
This applies to both input and holding register types:
Name
Address
Description
VPM
VPL
VP
VGU
COMF
Device
000
Protocol and controller setup
x
x
x
x
x
Discrete I/O
100
Input / output bits (on/off)
x
x
x
x
x
Analog I/O
200
Input / output words
x
x
x
x
x
Time
300
Clock and calendar
x
x
x
x
x
Alarm
400
Alarm and message handling
x
x
x
x
x
Week program
500
Calendar based programming
x
x
x
x
x
User functions
600
User input function selection
x
x
x
x
x
--
700
--
--
800
--
--
900
--
Control
1000
System control and status
x
x
x
x
x
AirFlow
1100
Ventilation control
x
x
x
x
x
AirTemp
1200
Room temperature control
x
x
x
x
AirBypass
1300
Exchanger bypass control
x
x
AirHeat
1400
Inlet air heater control
x
x
x
Compressor
1500
Compressor operation control
x
x
x
x
Defrost
1600
Defrosting control
x
x
x
x
x
HotWater
1700
Hot water control
x
x
CentHeat
1800
Central water heat control
(EK)
x
x
AirQual
1900
Air quality control (RH, CO2)
x
x
x
x
x
User panel
2000
Display and keyboard
x
x
x
x
x
PreHeat
2100
Intake air preheat / earth tube
x
x

All rights reserved Side 4 af 16
Input registers:
Name
Addres
s
Scale
Unit
Description
Used to plant type
Bus.Version
000
Protocol version number
All plants
App.VersionMajor
001
text
Software version - major (2
character ascii text)
All plants
App.VersionMinor
002
text
Software version - minor (2
character ascii text)
All plants
App.VersionRelease
003
text
Software version - release (2
character ascii text)
All plants
Input.UserFunc
100
User function
All plants
Input.AirFilter
101
Air filter alarm
VPM-Comfort-Comforti
Input.DoorOpen
102
Door contact
VPM-Comforti
Input.Smoke
103
Fire/Smoke alarm
All plants
Input.MotorThermo
104
Motor thermo fuse
VPM-Comforti
Input.Frost_Overht
105
Heating surface frost /
overheat
VPL-VPM-Compact-
Comfort-Comforti
Input.AirFlow
106
Airflow monitor (guard)
VPL-VPM-Compact-
Comfort-Comforti
Input.P_HI
107
High pressure switch
All Plants
Input.P_LO
108
Low pressure switch
Not in use
Input.Boil
109
Hot water boiling
VGU-VP-Compact
Input.3WayPos
110
Hot water 3-way valve position
Not in use
Input.DefrostHG
111
Hotgas defrost type selection
Not in use
Input.Defrost
112
Defrost thermostat
VPL-VPM-VGU-VP-
Compact
Input.UserFunc_2
113
User function 2
VPL-VGU-VP-Compact-
Comfort
Input.DamperClosed
114
Air damper closed position
Comfort-COMFORTi
Input.DamperOpen
115
Air damper opened position
Comfort-COMFORTi
Input.T0_Controller
200
100
°C
Controller board temperature
All plants
Input.T1_Intake
201
100
°C
Fresh air intake temperature
VPL-VPM-VGU-VP-
Compact
Input.T2_Inlet
202
100
°C
Inlet temperature (before
heater)
VPL-VPM-VP-Compact-
Comfort-Comforti
Input.T3_Exhaust
203
100
°C
Room exhaust temperature
Comfort-Comforti
Input.T4_Outlet
204
100
°C
Outlet temperature
Compact-Comfort-
Comforti
Input.T5_Cond
205
100
°C
Condenser temperature
VPL-VPM-VP-Compact
Input.T6_Evap
206
100
°C
Evaporator temperature
VPL-VPM-VGU-VP-
Compact
Input.T7_Inlet
207
100
°C
Inlet temperature (after heater)
VPL-VPM-VP-Compact-
Comfort-Comforti
Input.T8_Outdoor
208
100
°C
Outdoor temperature
Comfort-Comforti

All rights reserved Side 5 af 16
Input.T9_Heater
209
100
°C
Heating surface temperature
VPL-VPM-Comfort-
Comforti
Input.T10_Extern
210
100
°C
External room temperature
All plants
Input.T11_Top
211
100
°C
Hot water top temperature
VGU-VP-Compact
Input.T12_Bottom
212
100
°C
Hot water bottom temperature
VGU-VP-Compact
Input.T13_Return
213
100
°C
EK return temperature
VGU-VP
Input.T14_Supply
214
100
°C
EK supply temperature
VGU-VP
Input.T15_Room
215
100
°C
User panel room temperature
All plants
Input.T16
216
100
°C
AUX temperature (sacrificial
anode)
VGU-VP-Compact
Input.T17
217
100
°C
Preheater or earth tube air
intake temperature
--
218..220
(reserved)
Input.RH
221
100
%
Humidity
All plants
Input.CO2
222
ppm
Carbon dioxide
All plants
Alarm.Status
400
Alarm state bit mask
0x80 : Active alarm(s) present
0x03 : Nb. of alarms listed
All
Alarm.List_1_ID
401
Alarm 1 –Code
0x80 : (reserved future use)
0x7F : Display code 1..99
All
Alarm.List_1_Date
402
Alarm 1 –Date
Bit word packed in DOS date
format. Year 0 = 1980
15 8 7 0
HHHHHMMM MMMSSSSS
All
Alarm.List_1_Time
403
Alarm 1 –Time
Bit word packed in DOS time
format. Seconds are in scale 2
(0..29=0..58 seconds)
15 8 7 0
HHHHHMMM MMMSSSSS
All
Alarm.List_2_ID
404
Alarm 2 - Code
All
Alarm.List_2_Date
405
Alarm 2 - Date
All
Alarm.List_2_Time
406
Alarm 2 - Time
All
Alarm.List_3_ID
407
Alarm 3 - Code
All
Alarm.List_3_Date
408
Alarm 3 - Date
All
Alarm.List_3_Time
409
Alarm 3 - Time
All
Control.RunAct
1000
Actual on/off state
0 : Off
1 : On
All
Control.ModeAct
1001
Actual operation mode
0 : Off
1 : Heat
2 : Cool
3 : Auto
4 : Service
All

All rights reserved Side 6 af 16
Control.State
1002
Actual control state
0 : Off
1 : Shift
2 : Stop
3 : Start
4 : Standby
5 : Ventilation stop
6 : Ventilation
7 : Heating
8 : Cooling
9 : Hot water
10 : Legionella
11 : Cooling + hot water
12 : Central heating
13 : Defrost
14 : Frost secure
15 : Service
16 : Alarm
17: Heating + hot water
All
Control.SecInState
1003
Sec
Actual time in state
All
AirFlow.VentSet
1100
Step
Actual ventilation step set point
0 : Off
1..4 : Step number
All
AirFlow.InletAct
1101
Step
Actual ventilation step set point
0 : Off
1..4 : Step number
All
AirFlow.ExhaustAct
1102
Step
Actual ventilation step set point
0 : Off
1..4 : Step number
All
AirFlow.SinceFiltDay
1103
Days
Days since last air filter
change alarm
One day is measured as 24
hours of active running time
All
AirFlow.ToFiltDay
1104
Days
Days to next air filter change
alarm
One day is measured as 24
hours of active running time
All
AirTemp.IsSummer
1200
Summer state
0 : Off
1 : On
All
AirTemp.TempInletS
et
1201
100
°C
Inlet temperature request (T7
setpoint)
All
AirTemp.TempContro
l
1202
100
°C
Actual value for controlled
temperature
All
AirTemp.TempRoom
1203
100
°C
Actual room temperature (T15
or T10)
All
AirTemp.EffPct
1204
100
%
Passive heat exchanger
efficiency
Compact-Comfort-
Comforti
AirTemp.CapSet
1205
100
%
Requested capacity
All plants
AirTemp.CapAct
1206
100
%
Actual capacity
All plants

All rights reserved Side 7 af 16
CentralHeat.HeatExt
Set
1800
100
°C
Actual setpoint for external
heating source
All plants
Display.LED_1
2000
User panel indicator light
All plants
Display.LED_2
2001
(reserved future use)
All plants
Display.Text_1_2
2002
ascii
Text line 1 character 1-2
All plants
Display.Text_3_4
2003
ascii
All plants
Display.Text_5_6
2004
ascii
All plants
Display.Text_7_8
2005
ascii
All plants
Display.Attr_1_8
2006
Text line 1 flags
All plants
Display.Text_9_10
2007
ascii
Text line 2 character 9-16
All plants
Display.Text_11_12
2008
ascii
All plants
Display.Text_13_14
2009
ascii
All plants
Display.Text_15_16
2010
ascii
All plants
Display.Attr_9_16
2011
Text line 2 flags
All plants

All rights reserved Side 8 af 16
Holding registers:
Name
Address
Scale
Unit
Description
Used to plant type
Bus.Address
0
Protocol node address (default =
30)
All plants
Output.AirFlap
100
Air flap
VPL-VPM-VGU-VP-
Comfort-Comforti
Output.SmokeFlap
101
Fire/Smoke flap
VPM-Comforti
Output.BypassOpen
102
Bypass flap open
Compact-Comfort-
Comforti
Output.BypassClose
103
Bypass flap close
Compact-Comfort-
Comforti
Output.AirCircPump
104
Air heat circulation pump
VPM-Comfort-Comforti
Output.AirHeatAllow
105
Air heating selected
VPL-VPM-Compact-
Comfort-Comfortit
Output.AirHeat_1
106
Air heater relays
VPM-Comforti
Output.AirHeat_2
107
--
VPM-Comforti
Output.AirHeat_3
108
--
VPM-Comforti
Output.Compressor
109
Compressor
VPL-VPM-VGU-VP-
Compact
Output.Compressor_
2
110
Compressor 2
Not in use
Output.4WayCool
111
4-way valve
VPL-VPM-VGU-
Compact
Output.HotgasHeat
112
Hotgas valve - heat
VPM
Output.HotgasCool
113
Hotgas valve - cool
VPM
Output.CondOpen
114
Air condenser active
Compact
Output.CondClose
115
Air condenser inactive
Compact
Output.WaterHeat
116
Hot water heater
VGU-VP-Compact
Output.3WayValve
117
Hot water 3-way valve
Not in use
Output.CenCircPump
118
EK circulation pump
VGU-VP
Output.CenHeat_1
119
EK heater relays
VGU-VP
Output.CenHeat_2
120
--
VGU-VP
Output.CenHeat_3
121
--
VGU-VP
Output.CenHeatExt
122
External radiator heat
VPL-VP-Compact-
Comfort
Output.UserFunc
123
User function active
All plants
Output.UserFunc_2
124
--
VPL-VGU-VP-Compact-
Comfort
Output.Defrosting
125
Defrost function active
All plants
Output.AlarmRelay
126
Alarm relay state
All plants
Output.PreHeat
127
Preheater or earth tube
activation
VPL-VGU-VP-Compact-
Comfort
Output.ExhaustSpee
d
200
100
%
Exhaust fan speed
All plants
Output.InletSpeed
201
100
%
Inlet fan speed
VPL-VPM-VP-Compact-
Comfort-Comforti
Output.AirHeatCap
202
100
%
Air heater capacity
VPL-VPM-Compact-
Comfort-Comforti

All rights reserved Side 9 af 16
Output.CenHeatCap
203
100
%
Central heater capacity
VGU-VP
Output.CprCap
204
100
%
Compresor capacity
VPL-VPM-VGU-VP-
Compact
Output.PreHeatCap
205
100
%
Preheater capacity or earth tube
air intake fan speed
VPcCoB
Time.Second
300
ss
Second
All plants
Time.Minute
301
nn
Minute
All plants
Time.Hour
302
hh
Hour
All plants
Time.Day
303
dd
Day
All plants
Time.Month
304
mm
Month
All plants
Time.Year
305
yyyy
Year
All plants
Alarm.Reset
400
Clear one specific alarm code or
all
0 : No command
1..99 : (reserved internal
commands)
101..199 : Clear alarm display
code 1..99
255 : Clear all alarms
All plants
Program.Select
500
Week program nb. select
0 : None
1 : Program 1
2 : Program 2
3 : Program 3
4 : Erase
All plants
Program.UserFuncAc
t
600
User function active (See
“UserFuncSet”)
All plants
Program.UserFuncS
et
601
User function select
0 : None
1 : Extend
2 : Inlet
3 : Exhaust
4 : External heater offset
5 : Ventilate
6 : Cooker Hood
All plants
Program.UserTimeS
et
602
Min
Min User function period
All plants
Program.UserVentSe
t
603
Step
Step User function ventilation
0 : Off
1..4 : Step number
All plants
Program.UserTempS
et
604
100
°C
User function temperature
(Extend function only)
All plants
Program.UserOffsSet
605
100
°C
User function
temperature(Offset function
only)
All plants
Program.User2Func
Act
610
Same as user function 1 above
VPL-VGU-VP-Compact-
Comfort