Swegon LUNAd MB User manual

LUNAd MB
Instructions for Use 08/04/2021
Content
Introduction ....................................................... 3
1.1 Introduction .......................................................... 3
1.2 Selection of room temperature ............................. 3
1.3 LED status lamp .................................................... 3
System overview and installation. .................... 3
2.1 System overview ................................................... 3
2.2 Terminal functions ................................................ 3
2.3 Invert heating outputs........................................... 4
2.4 Resetting .............................................................. 4
2.5 Hand-held terminal LUNAd T-CU........................... 4
Control functions ................................................ 5
3.1 Operating modes .................................................. 5
3.2 Setting room temperatures ................................... 5
3.3 Deadband............................................................. 5
3.4 Control process..................................................... 5
3.5 P-function............................................................. 5
3.6 I-function.............................................................. 5
Inputs and sensors.............................................. 6
4.1.1 Sensor type ........................................................ 6
4.1.2 Average value measurement............................... 6
4.2 Occupancy sensor................................................. 6
4.2.1 Switch-on delay ................................................. 6
4.2.2 Switch-off delay................................................. 6
4.2.3 Inverting the occupancy signal ........................... 6
4.3 Overriding the operating mode ............................. 6
4.3.1 Forced output when external contact function
is activated ................................................................. 6
4.4 Condensation sensor ............................................ 7
4.4.1 Select effect of output A1 .................................. 7
Outputs and actuators ....................................... 8
5.1 Actuators .............................................................. 8
5.2 Output signals ...................................................... 8
5.3 Heating, cooling or direct temperature regulation
of output.................................................................... 8
5.4 Limitation of control range.................................... 9
5.5 Temperature limits for “direct temperature control” 9
5.6 Setting the voltage limits for outputs A1 and A2... 9
5.7 Inverting the output.............................................. 9
5.8 Periodic valve operation ........................................ 9
Data communication......................................... 10
6.1 Modbus protocol ................................................ 10
6.1.1 Modbus RTU protocol....................................... 10
6.1.2 Data bits and bytes .......................................... 10
6.1.3 Data rate .......................................................... 10
6.1.4 Modbus RTU protocol ...................................... 10
6.1.5 Modbus address............................................... 10
6.1.6 Modbus register ................................................11
6.1.7 Modbus command ............................................11
6.1.8 Modbus RTU over Ethernet................................11
6.1.9 Error messages ..................................................11
6.1.10 Delays and communication errors ................... 12
6.1.11 Monitoring program ....................................... 12
6.2 RS-485 network ................................................. 12
6.2.1 Nodes, server and clients.................................. 12
6.2.2 Transceiver....................................................... 12
6.2.3 Bits and signal levels ........................................ 13
6.2.4 Converter ........................................................ 13
6.2.5 Repeater .......................................................... 13
6.2.6 Screw terminals for network cable ................... 13
6.2.7 Twisted pair cabling ......................................... 13
6.2.8 Galvanic isolation............................................. 13
6.2.9 Polarisation ...................................................... 13
6.2.10 Termination.................................................... 13
6.2.11 Electromagnetic interference .......................... 14
6.2.12 Shielded cable ................................................ 14
6.3 Network structure............................................... 14
6.3.1 Segments......................................................... 14
6.3.2 Number of nodes............................................. 14
6.3.3 Network cable ................................................. 14
6.3.4 Shielded cable.................................................. 15
6.3.5 Earth wire........................................................ 15
6.3.6 Polarisation ...................................................... 16
6.3.7 End termination ............................................... 16
6.4 Network troubleshooting.................................... 16
The document was originally written in Swedish

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6.5 Deviations from the Modbus standard .................17
6.5.1 RTU communication format...............................17
6.5.2 Data rate ..........................................................17
6.6 Modbus register.................................................. 18
6.6.1 Area 0x ............................................................ 18
6.6.2 Area 1x............................................................ 18
6.6.3 Area 3x............................................................ 19
6.6.4 Area 4x............................................................ 20
Menu functions with hand-held terminal....... 23
7. Hand-held terminal ............................................... 23
7.1.1 Factor y reset ..................................................... 23
7.1.2 Quick guide:..................................................... 23
7.2 Hand-held terminal’s different modes.................. 24
7.2.1 Local mode (the settings are made in the tool).. 24
7.2.2 Read mode ...................................................... 24
7.3 LUNAd T-CU buttons........................................... 24
7.4 Display symbols................................................... 25
7.5 Navigation under the main menu ........................ 25
7.6 Navigation under the settings menu.................... 25
7.7 Change values..................................................... 25
7.8 Display overview ................................................ 26
7.9 Week programme ............................................... 27
7.10 Log function...................................................... 27
7.11 Control settings ................................................. 27
7.12 Outputs, settings ............................................... 28
7.13 Inputs, settings .................................................. 30
7.14 Occupancy......................................................... 31
7.15 Calibration of temperature sensors..................... 32
7.16 Button functions................................................ 33
7.17 Test menu.......................................................... 34
7.18 Type designations .............................................. 36

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1.2 Selection of room temperature
The temperature is set by adjusting by turning the adjuster
knob. The adjuster knob always controls the required
temperature in DAY operating mode, irrespective of whether
any other operating mode is active. It is not possible to see
which operating mode is currently active, but with the help
of the large LED you can see whether the controller is in
heating mode, cooling mode or in standby (dead zone).
The scale of the adjuster knob is not graduated (i.e. no
numbers), so that it is possible to change the adjuster
knob’s temperature range. On delivery the adjust knob’s
range is 19–25 °C with the set point 22 °C in the
middle of the set point scale. Turn the adjuster knob up
(clockwise) you increase the temperature and vice versa.
1.3 LED status lamp
The room controller is equipped with a LED status lamp
that indicates the current output signal. The LED lamp can
also display other operating modes. In normal mode the
LED lamp displays the following:
1. Blue = cooling requirement
2. Red = heating requirement
3. Flashing blue = condensation (only when the
condensation function is active in the room controller
and the operating mode is cooling requirement.
Introduction
1.1 Introduction
LUNAd is a room controller that gives a stable and
comfortable room temperature through efficient and
accurate control and regulates air and the different heating
and cooling actuators. The room controller has four outputs
that can individually be adjusted to suit most requirements.
In the supplied version the room controller is set to control
air as well as heating and cooling actuators with 24 V AC
and 0–10 V DC.
The room controller has a built-in temperature sensor for
detection and setting of the room temperature.
Different types of sensors can be connected to the room
controller.
If you need to change the settings on a room controller
a special hand-held terminal with display (LUNAd T-CU)
is required. The hand-held terminal is then connected
temporarily to the room controller’s 4-way connector. The
connector is located behind the room controller’s cover.
If you wish to install an external sensor in the room or
e.g. in the air duct, the sensor is connected to the screw
terminals in the room controller. The external sensor is
then activated automatically.
Even different types of sensors can be connected to the
controller, for example, occupancy sensor, condensation
sensor, extra temperature sensor or an external contact.
The external sensor’s functions can be set on the menus
on the hand-held terminal with display.
The room controller has three different operating modes
(day, night and save) that can activate different room
temperatures.
2.1 System overview
The room controller can be configured in a variety of
ways. The controller has been especially developed to
facilitate customisation without the need making and
changes to the hardware. The room controller can be
directly connected to numerous different control systems
without the need to make any settings. These are
described in this chapter.
2.2 Terminal functions
The screw terminals on the controller have different
markings and placements. The following figure describes
the screw terminals in a factory set room controller:
System overview and
installation.
9. Input for condensation sensor
10. Modbus +
11. Modbus -
8. Input for external temp. sensor
7. Analogue output A2, 0–10 V DC, heating
6. G0, 0V from transformer
5. G, phase 24V AC from transformer
4. Analogue output A1, 0–10 V DC, cooling
3. Output D2 - 24 V heating actuator (0 V)
2. Common phase 24V AC for actuator
1. Output D1 - 24 V Cooling actuator (0 V)

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2.3 Invert heating outputs
There is a button under the cover on the controller. The
button can be used to invert all the heating outputs.
1. Set the temperature potentiometer to its lowest position.
2. Press and hold the button for about 12 seconds.
3. The room controller now inverts all the heating outputs.
Repeat the procedure to remove all the inverted
heating outputs.
2.5 Hand-held terminal LUNAb T-CU
On the room controller’s PCB, behind the cover, is a
4-way outlet where the hand-held terminal can be
connected. Using this it is possible to configure different
settings in the room controller.
All the settings are described in the manual, chapter 7
2.4 Resetting
There is a button under the cover on the controller.
The button can be used to reset the memory according to
the customer’s configuration.
1. Switch off the power to the controller.
2. Press and hold the button while switching on the
power to the controller.
3. Release the button, the controller now performs a
customer reset.
LED Heat
LED Cool
Function LED
Set point
potentiometer
Function button
2 3 4 5 6 7
ON
OFF
Modbus adress
Connector for
c
onfiguration tool
H202
Temperature
Sensor
8
1
1
2
3
4
5
6
7
8
9 10 11
LED Heat
LED Cool
Function LED
Set point
potentiometer
Function button
2 3 4 5 6 7
ON
OFF
Modbus adress
Connector for
c
onfiguration tool
H202
Temperature
Sensor
8
1
1
2
3
4
5
6
7
8
9 10 11

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Control functions
The room controller regulates the temperature in the
room with the help of a heating elements and/or chilled
beams. The room controller compares the set temperature
with the current measured room temperature and controls
via its outputs the heating or cooling to the room.
3.1 Operating modes
The room controller has three operating modes each
with its own setting values for room temperature and
“deadband”. Other functions can also be connected to
the different operating modes. The operating modes can
be controlled by the following functions in priority order:
1. External contact
2. Occupancy
3.2 Setting room temperatures
The room temperature is adjusted individually for the
three operating modes with the help of the hand-held
terminal LUNAd T-CU.
Using the adjuster knob on the room controller you can
only adjust the desired temperature for DAY mode. The
desired temperature is also called the “set point”. The
measured room temperature is also called the “actual value”.
3.3 Deadband
The room controller has a neutral zone between heating
and cooling control that is called the deadband. This
function is used to prevent both the heating and cooling
outputs from being connected at the same time, and
to save energy. However, the room controller permits
the temperature to deviate a half degree up or down
compared to the set point temperature, before a control
signal is sent to the heating elements or chilled beams.
This applies in DAY operating mode.
In NIGHT mode and SAVE mode the deadband is wider,
to give an economy function when you are not in the room.
When the hand-held terminal is connected it is possible to
adjust the three different deadbands under menu 3.
For DAY operating mode: function “DB.D”
For NIGHT operating mode: function “DB.N”
For SAVE operating mode: function “DB.S”
When high climate comfort is required, the deadband
should be relatively small. However, the deadband should
be wider to save energy.
If the room controller is set to only control heating or
only cooling, then the deadband has not function, and
the room temperature is then controlled directly to the
temperature set for each operating mode.
3.4 Control process
A slightly simplified control works as follows, step by step:
3.5 P-function
The room controller’s method of control is known as “PI”,
which is an abbreviation of proportional and integral.
The proportional function (p-function) means that
the controller calculates a capacity requirement that is
proportional to the temperature deviation.
The P-band can be configured under menu 3.
P-band for heating: function “P.H”
P-band for cooling: function “P.C”
3.6 I-function
The integral function (i-function) means that the room
controller continuously monitors the capacity requirement
that the p-function gives. This helps to smooth out the
deviation more accurately than what the p-function can
sometime achieve, for example, due the heating element
or chilled beam needing a higher control signal to be able
to reach the right temperature in the room.
The I-function can be configured under menu 3.
I-time for heating: function “I.H”
I-time for cooling: function “I.C”
1. The room controller selects the right temperature
and deadband taking into consideration the enabled
operating mode.
2. The controller calculates the regulated setpoints for
cooling and heating that are equal to the setpoint ±
half the deadband.
3. If the temperature has been higher than the regulated
set point for cooling, the controller is set to cooling
mode and uses the regulated set point for cooling when
regulating.
4. The deviation between the desired temperature and
the measured temperature can be calculated.
5. The capacity value for heating or cooling is calculated.
6. The room controller’s i-function detects if the
temperature deviation has not been corrected for a
long period, and if necessary adds an extra “boost” to
the capacity values.
7. The capacity values are converted to output signals and
are sent to the different outputs.

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Inputs and sensors
The room controller has a fixed input for the
condensation sensor and a programmable input for the
external sensor. Depending on the selected function, a
sensor can be of the thermistor type for temperature
monitoring (resistive), condensation detection (resistive)
or a contact (0 V or no contact).
The condensation sensor is connected between terminal
block 9 (input) and terminal block 6 (G0).
An external sensor (resistive or contact) is connected
between terminal block 8 (input) and terminal block 6
(G0).
The configuration tool can be used to select the type of
sensor you wish to connect.
There are four different sensor functions:
Type Input
1. Condensation sensor 9. Condensation
2. External temperature sensor 8. Termistor,NTC,10K
3. Presence sensor 8. Contact:
4. Operating mode contact 8. Contact:
4.1.1 Sensor type
Two types of sensor can be used for temperature control:
a) in-built sensor
b) external resistive sensor (NTC, 10 kOhm at 25°C)
The built-in sensor in the room controller is always used
automatically by the room controller if no other sensor
is connected to the terminal. When an external, resistive
sensor is connected, the room controller selects this
sensor automatically instead of the built-in sensor.
4.1.2 Average value measurement
In order to connect the average value measurement with
both an external sensor and the built-in room controller,
set the following on menu 5 (input).
Function “R1+R2” can be set to 1 or 2
1 = Change over function with external sensor
2 = Average value between external and internal
sensors
(If value 2 is used and if no other external sensor is
connected, the room controller only reads the internal
sensor)
4.2 Occupancy sensor
It’s possible to connect an occupancy sensor that enables
the DAY operating mode when occupancy is detected
and which enables NIGHT operating mode when the
occupancy indication ceases. A switching on and off delay
for the DAY operating mode can be set.
The presence sensor can have a contact output (normally
open or normally closed) which is connected between
terminal block 8 (input) and terminal block 6 (G0). G0
is the signal that the sensor switches on and off to the
input.
The occupancy sensor is activated with the help of the
hand-held terminal, under menu 6 and the function
“ACTIVE” (enable).
4.2.1 Switch-on delay
When occupancy has been indicated at some time
both during the first and second half of the delay time,
the DAY operating mode is enabled after the time has
expired. This operating mode remains enabled as long as
there is an occupancy indication.
The switch-on delay for occupancy is selected under
menu 6:
Function “TIME1”: select the delay time for switching on
4.2.2 Switch-off delay
The switch-off delay delays the disabling of DAY operating
mode when occupancy indication from the sensor ceases. The
time is adjustable between 0 and 990 minutes. The resolution is
10 minutes over 100 minutes.
The switch-off delay for occupancy is selected under menu 6:
Function “TIME0”: select the delay time for switching off
4.2.3 Inverting the occupancy signal
The input function can be inverted to select either an
occupancy sensor that has a normally open or normally
closed contact for occupancy indication.
Inverting the occupancy signal is selected under menu 6:
Function “NO”: 0 = (NC, normally closed) opens
when occupancy is detected
1 = (NO, normally open) closes
when occupancy is detected
4.3 Overriding the operating mode
With the 0 V-signal from an external contact, you can force
any of the room controller’s four outputs. The contact is
connected between terminal 8 (input signal) and 6 (G0).
Enabling the external contact function is selected under menu
5 with the help of the hand-held terminal LUNAd T-CU.
Function “EXT.”:
0 = external contact function disabled
1 = external contact function enabled

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4.3.1 Forced output when external contact
function is activated
When the external contact function is enabled it is
possible to select which of the outputs is to be forced to
open (0 V to terminal 8).
Activation of forcing output is selected under menu 4,
OUTP”:
First select the output under the function “OPno”:
D1 = 24 V output terminal 1
D2 = 24 V output terminal 3
A1 = 0–10 V output terminal 4
A2 = 0–10 V output terminal 7
Select the function “FORC.”:
0 = forcing of output disabled
1 = forcing of output enabled (when the external
contact is enabled with 0 V to the input on terminal 8).
4.4 Condensation sensor
It is possible to connect a condensation sensor to input I1
(between terminal 8 and terminal 6) to disable all cooling
outputs and generate an alarm for high condensation of
output A1.
The condensation input is designed for resistive
condensation sensors, with resistance values between 50
K and 900 kΩ(for condensation).
The condensation function is set under menu 5 with the
help of the hand-held terminal LUNAd T-CU.
Function “COND” 0 = condensation disabled
1 = condensation enabled
4.4.1 Select effect of output A1
If this function is enabled, the controller activates the 10 V
DC output on Y3 (terminal 4) when condensation occurs.
Function “CALRM” 0 = alarm signal disabled
1 = alarm signal enabled

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Outputs and actuators
The room controller has two 24 V outputs (d1 and d2) and two
analogue 0–10 V outputs (A1 and A2).
Actuators are connected to the following terminal blocks:
• d1: terminal block 1 and 2.
• d2: terminal block 3 and 2.
• A1: terminal block 4 (+), terminal block 6 (G0) and to G
(phase 24 V AC).
• A2: terminal block 7 (+), terminal block 6 (G0) and to
G (phase 24 V AC).
An output can be affected by the following functions (the
uppermost has the highest priority):
1. Output affected by the condensation sensor
2. Output enabled for test activation
3. Output enabled if the function “FORC.”=1 on
menu 4 when input I2 is set to the contact
function “EXT.” = 1.
Under menu 4 (“OUTP”) you can select the type of
regulation outfeed and other settings for each output.
Select the output to be set:
Function “OPno” select d1, d2, A1 or A2.
The setting of functions that follow “OPno” only apply to
the selected output.
When “3P” has been selected for output D1, the settings
refer to both outputs d1 and d2, as this outfeed uses both
the digital outputs.
The room controller outputs a heating and cooling
capacity values between 0–100 % to the outfeed logic.
A capacity value is calculated for each individual output
based on this value (and depending on the following
settings for each output).
5.1 Actuator
In this context an actuator is an electro-mechanical unit
that is governed by an electrical signal from the controller
and manoeuvres, e.g. a valve or damper to close.
5.2 Output signals
Different actuators require different output signals from
the room controller. The outputs are therefore adjustable
for different types of actuator.
Pulse regulating (24V or 0-10V)
Normally used to control thermal actuators or for
electrical heating control.
ON/OFF control (24V or 0-10V)
Normally used for the control of 2-position damper
motors or electrical heaters via contactors.
3-p regulating (24V)
Normally used to control increase/decrease actuators.
0-10 V regulation (0-10 V)
Normally used to control 0-10 V actuators.
5.3 Heating, cooling or direct
temperature regulation of output
You can choose whether an output should control a
heating actuator, a cooling actuator or an actuator for
both heating and cooling.
A cooling actuator is only activated when the controller
outputs a capacity value for cooling. A heating actuator
is only activated when the controller outputs a capacity
value for heating.
An actuator that is directly controlled by the room
temperature is not affected by the controller’s fed
capacity, but only by the selected limit value for the room
temperature.
Go to the function “HC” under menu 4, and set the
following selections for the required output:
COOL: for the regulation of cooling
HEAT: for the regulation of heating
HC: for the regulation of both cooling and heating
dIFF: for direct temperature control
In “HC” mode, 0–5 V is fed with a cooling requirement
100–0 % and 5–10 V for a heating requirement 0–100 %
on outputs A1 and A2.
It is possible to set the controller so that the 0–10 V
outfeed to output A1 is available both for heating and
cooling requirement to control of an actuator on a 6-way
valve.

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5.4 Limitation of control range
(does not apply if “direct temperature regulation of
output” is selected)
The room controller calculates a capacity value between
0–100 % which is sent to the outfeed logic. You can
choose, for each output, whether it should regulate
within the whole or part of this range.
Example:
If, for example, you have selected an output that regulates
within the range 20–50 %, the capacity to the actual
output will be regulated as follows:
This function can be used, for example, to control output
in sequence.
Go to menu 4, and set the following selections for the
required output:
LIML%: the low capacity limit in %
LIMH%: the high capacity limit in %
5.5 Temperature limits for “direct
temperature control” (see 5.3)
When “dIFF” is selected in the function “HC”, the output
is not regulated to the capacity value from the controller,
but directly by the selected room temperature limits.
Set a temperature range with the functions “LIM.-1” and
“LIM.-0”. When the temperature is within the range and
“PULS”-, “3P”-, “OnOff” or “0-10” regulation is selected,
the capacity is outputted to output by the temperature
value in relation to these limit values.
When the temperature reaches “LIM.-1” or is outside of
this value, 100 % of the capacity is fed to the output.
When the temperature reaches “LIM.-0” or is outside of
this value, 0 % of the capacity is fed to the output.
5.6 Setting the voltage limits for outputs
A1 and A2
The voltage on outputs A1 and A2 are normally between
0–10 V, but the values can be limited upwards or
downwards.
The voltage from output A1 and A2 does not drop below
the selected minimum value in the function “LIML V” and
does not exceed the selected max value in the function
“LIMH V”.
Exceptions For the condensation indication the voltage is
set to 0 V, irrespective of the value for the function “LIML V”.
5.7 Inverting the output
Inverting means that the outputs D1 and D2 close instead
of open and vice versa.
For an increase/decrease outfeed the outputs with work
in reverse so that the actuator changes rotation direction.
Output A1 and A2 give 10–0 V instead of 0–10 V, for
example 7 V becomes 3 V instead.
Inverting of the output signal is set under menu 4:
Function “INV.” select 0 (not inverted)
select 1 (inverted)
5.8 Periodic valve operation
Some valves need to be “test run”, i.e. periodically
opened and closed to not jam or seize.
Test running occurs at optional daily intervals:
D1 and A1 open at 01:00–01:03.
D2 and A2 open at 01:30–01:33.
The setting for test running is set under menu 4:
The function “MOT” select the number of days between
test running. The value 0 disables test running.
Capacity from the controller Capacity outfeed to the output
0–20 % 0%
20–50 % 0–100%
50 –100 % 100 %

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Data communication
The room controller has a built-in communication port
that enables connection to an RS 485 network with
Modbus for supervising and overriding via a building
management system, for example a computer.
6.1 Modbus protocol
Modbus is a communication protocol (language) used to
transfer information between a server and a number of
client nodes.
All “traffic” on the network is always initiated only by the
server node.
All other nodes on the network are only permitted to sit
quietly and wait for the server to “query” just them. Thus
the clients cannot send their own packages to any other
client node.
In addition, a client node cannot send spontaneous
messages to the server, for example, alarms or the like.
Regular reading from the server is established instead, so
that it can detect alarms out in the client nodes.
6.1.1 Modbus RTU protocol
Modbus RTU, which is one of the different variants of the
Modbus protocol, is used to communicate with the room
controller.
Other “dialects” available (but which are not supported by
the room controller) are Modbus ASCII and Modbus TCP.
6.1.2 Data bits and bytes
The information on the Modbus network is structured by
a long row of ones and zeros. These are called bits and
are grouped into bytes (= characters). Each byte appears
like this:
a) start bit (1 bit)
b) data bits 0–7 (8 bits)
a) stop bit (1 bit)
Other byte structures can be selected with the help of a
room controller E201 with display or E203. 7 or 8 data
bits can be selected, and 1 or 2 stop bits. An extra parity
bit precisely before the stop bit can also be selected to
give extra error detection.
6.1.3 Data rate
The room controller is preset at the rate 19200 bits/sec.
Other rates can be selected with the help of a room
controller with display (or configuration unit). If the data
rate is changed to a higher level, higher demands are
made on the network cable. You may need to limit the
cable length and sometimes even choose a shielded cable.
Termination of the cable ends may also be necessary at
higher rates to eliminate reflection interference.
6.1.4 Modbus RTU package
Every “package” (message) sent on the network includes
the following information:
a) node address (1 byte)
b) command (1 byte)
c) data values (1–252 bytes)
d) checksum (2 bytes/CRC-16)
When a complete package with bytes has been sent from
the server, the queried node has the possibility to send its
response back to the server.
6.1.5 Modbus address
Each Modbus device needs its own unique address to
be able to communicate on the network. This is called a
node address and should be a number between 1 and
247. The node address is set on the room controller’s
circuit board, on an 8 position dip switch.
Exercise care to ensure that no Modbus device has the
same number as another device on one and the same
segment (bus). It is therefore a good idea to create a list
of node numbers that shows in which room each device
is installed.
If you choose to set the address on the dip switch, you need
to calculate binary code. Each button corresponds to a
value that is twice the size of the previous button. The first
button means 1, next button 2, next 4, next 8 and so on.
Example:
ON
1 2 3 4 5 6 7 8
The row of buttons above is called a “dip switch” and
has the buttons 2, 5 and 6 set to the “ON” position. The
buttons are in turn worth 1, 2, 4, 8, 16, 32, 64 and 128. If
a button is in the “ON” position, you should calculate the
button value. The example above means that the address
50 is selected.
(0+2+0+0+16+32+0+0 = 50)
In order to quickly calculate the right binary code, you
can use certain mini calculators (which have the binary
number system). The calculator included with Microsoft
Windows can be set to “advance mode”, and then used
to convert common decimal numbers to binary. Note
that you must then reverse the order of ones and zeros.
The number shown to the far right of the calculator
should always be set on the button to the far left on the
controller’s dip switch. If the calculator shows fewer than
eight digits, this means that the rest of the buttons to the
right on the dip switch should be set to the off position
(i.e. not “ON”).

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6.1.6 Modbus register
All Modbus products have a number of different registers
that can be reached to read or change values. In the room
controller, the registers are organised in the following four
register areas:
a) area 0x:1-bit register, 11 (read/write)
b) area 1x:1-bit status register, 10 (read)
b) area 3x:16-bit status register, 20 (read)
a) area 4x:16-bit register, 82 (read/write)
Each register has a number that denotes which area it
belongs to and the order number it has within the area
For example, the first 4x register is called 40001 and the
last 40082. When the Modbus packets are transmitted
on the network, only the register’s order number is
transmitted, as each packet is intended to read or write
registers belonging to a particular area, depending on
the command included in the packet (see point 6.1.7
below). The first register in area 4x, i.e. register 40001, is
transmitted as number zero and register 40002 is called 1
and so on.
Example:
01 04 00 05 00 01 CL CH
The first byte indicates the destination address of the
packet. The second byte is command 4, i.e. “read 16-bit
status register”.
The following two bytes, i.e. “00 05”, indicate that you
wish to read register 30006. The following two bytes
indicate how many registers you wish to read in a row,
and in this example only one register has been requested,
i.e. “00 01”. The last two bytes are a checksum (“CL
CH”), a calculated value that the transmitter sends with
the packet so that the receiver is able to check that the
packet arrived correctly and is intact.
A complete list of all registers can be found at the end
of this chapter. It also shows how each data value is
presented, for example, that the value 0 to 318 means 0
to 31.8 °C. In order to present all data values correctly on
a supervising computer or website, you need to enter a
conversion formula so that the value is shown correctly.
6.1.7 Modbus command
The following commands are used to read and write to
the room controller’s register:
01. Read 1-bit register(area 0x)
02. Read 1-bit status register (area 1x)
03. Read 16-bit register (area 4x)
04. Read 16-bit status register (area 3x)
05. Write to 1-bit register (area 0x)
06. Write to 16-bit register (area 4x)
15. Write to more 1-bit registers (area 0x)
16. Write to more 16-bit registers (area 4x)
6.1.8 Modbus RTU over Ethernet
There are two different ways to connect a Modbus
network to the internet or a LAN network. One way is to
use a converter that can convert the Modbus TCP packet,
that comes from a monitoring program, to the Modbus
RTU packet, and vice versa. All traffic between the
computer and converter usually goes via TCP port 502.
The other way is to use a monitoring program that sends
the standard Modbus RTU packet to a converter, that fully
transparently forwards the packet out on the Modbus
network. The setting in the monitoring program is then
usually called “Modbus RTU over Ethernet” or something
similar. All traffic between the computer and converter
usually goes via another TCP port, for example, 4001.
6.1.9 Error messages
If an incorrect query is sent from the server, the client
nodes respond with an error message back to the server,
and the ERROR lamp flashes red.
These are the error messages that the room controller can
send out:
a) the command is not permitted (error code 1)
b) the data address is not permitted (error code 2)
c) the data value is not permitted (error code 3)
d) incorrect CRC checksum (error code 9)
An error message can look like this:
01 81 02 CL CH
The first byte denotes the own node address. The second
byte shows, which command that the server sends out
when the query was made. 128 is added to this command
digit before it is transmitted, to indicate that it is an error
message (the example above is hexadecimal, where 81
corresponds to the decimal digit 129). The third byte
is the actual error code. Byte 4 and 5 are a CRC code
(checksum) for this error message (CL and CH).
If the server sends the packet to all nodes (i.e. a
“broadcast” to address zero), then no error message is
sent back to the server.

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6.1.10 Delays and communication errors
If you communicate with Modbus nodes via a LAN
network or internet, then problems can sometimes occur
with timeouts and non-responses. This may be due to the
transfer via the TCP/IP communication and you will then
have to try to adjust the time delays and the number of
retries (repetitions)
You can also set the room controller (with the help of
a room controller with display or configuration unit) so
that the response to the server is not sent immediately,
but first after a slight delay (stated in the number of
milliseconds on the display). This can sometimes rectify
certain errors, for example, when the converter does not
have time to perceive the response, due to the fact it
constantly changes direction on the communication flow
(i.e. when it sends the server’s queries and when it listens)
If you use a converter between RS485 and RS232, you
should choose one that has automatic flow control, i.e.
that it switches itself to listening mode and automatically
changes direction when the server should speak and then
directly return to listening afterwards.
To use e.g. the RTS signal on the RS232 port to switch
between listening and sending usually is not fast enough,
which results in a lack of response to the server, despite
the nodes sending the response.
6.1.11 Monitoring program
In order to monitor and control the nodes on the Modbus
network, some form of program is needed on the server
computer. There are both large and small programs
designed to suit different purposes.
One common program used in many instances is Citect
Scada. This program can also communicate with other
networks and manage alarms, etc. Many other known
programs also offer support for Modbus, and sometimes
can be found as plugin-modules for programs.
There are free programs available on the internet to
test nodes on a network. These only communicate with
separate nodes. See www.modbus.org and click on
“technical resources”. There are tips under the heading
“offsite links”.
You can quite easily create your own program in e.g.
Visual Basic or C++ if you have access to programming
tools and have basic knowledge of programming.
6.2 RS-485 network
Information is sent on a RS485 network between two
or several devices. The data rate can be up to 10 Mbit/
sec and sometimes even higher. However, the room
controller’s maximum rate is 38400 bits/sec. RS-485
is designed to be able to transmit information over
cables and really long distances of up to about 1 km
and sometimes further. All depending on how well the
network is structured.
6.2.1 Nodes, servers and clients
Each device that connects to a data network is called a
“node”. If you use Modbus as the protocol you can have
many client nodes, but only one server. The definition
of server and client can sometimes be defined slightly
differently. In this manual we call the central computer/
device a server and all other nodes for clients. Sometimes
the server is also called the master, and clients for slaves.
On a RS485 network all nodes can communicate
bidirectionally, i.e. both read and write. However, only
one at a time is allowed to speak. This is regulated slightly
differently depending on which protocol you choose to
use. With Modbus as the protocol, it has been decided
that only the server-node may initiate all traffic on the
network.
6.2.2 Transceiver
Inside the room controller is an electronic circuit known
as the transceiver, which means “combined transmitter
and receiver”. It receives the signals from the network
and converts these to the right levels so that the internal
processor is able to understand them. The transceiver
also receives the processor’s transmission signals and
ensures that these are sent out with the right level on the
network.

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6.2.3 Bits and signal levels
Every one and zero sent on the network is converted
to electrical signals. These can be measured with an
oscilloscope or the like. If you measure the signals
between channels plus (+) and minus (-) a one
corresponds to about +5 volts and a zero -5 volts.
The more nodes you connect on the network, the more
the signal levels per node decrease. Both the positive and
negative signals then approach the zero line. In order for
a node to interpret a one, a signal level that is higher than
0.2 volts is required. A zero is interpreted if the signal level
is below 0 volts.
6.2.4 Converter
Some type of converter is needed to connect the RS-485
network to a computer or to the internet. There are many
different variants and brands on the market and these
convert the signals as follows:
a) RS485 to RS232 (transparent protocol)
b) RS485 to TCP/IP (transparent protocol)
c) Modbus RTU to Modbus TCP
Type c above involves a server computer sending the
Modbus TCP packet to the converter and the converter
converting to and from Modbus RTU. The others (a and b)
are designed to speak with Modbus RTU directly.
6.2.5 Repeater
A repeater is needed to divide up a segment in several
parts. This is useful when, e.g. you want to isolate two
parts of a segment from each other, or when a segment
already has the maximum number of nodes and you need
to connect more nodes.
Another alternative is to divide up the network into
several segments from the offset and to leave space for
extra nodes on each segment.
One disadvantage of a repeater is that a certain delay in
traffic occurs. However, in most cases this is not important.
6.2.6 Screw terminals for network cable
The network cable must be connected to the room
controller’s screw terminals. It is important that the right
conductor is connected to the right screw terminal.
All nodes must be connected with the same polarity
everywhere, i.e. all plus conductors to 10, and all minus
connectors to 11. This also applies to the central server.
On some other nodes the terminal markings are different,
for example D+ and D-. The room controller’s 10 is plus
and 11 is minus.
An earth wire also needs to be connected to all nodes
to terminal G0 (also called GND on some node’s screw
terminals). The earth cable shall also be connected to the
protective earth, usually in the vicinity of the server.
6.2.7 Twisted pair cabling
RS485 can communicate over most cable types, but
should always use twisted pair cabling to counteract
disruptions and you can then use longer cables.
Twisted pair cabling reduces the radiated interference
from the surroundings. As the conductors in a twisted
cable pair come exactly as close to all interference sources
in all directions, each interference signal is extinguished in
the transceiver, as the conductor’s signals are measured
differentially.
Namely, all data signals are sent out positively in the
A-cable.
In the B-cable, the signals are mirrored. When both
signals are read in a node, signals that differ between
the cables are amplified, and all similar signals (such as all
external disturbances) are attenuated.
Although RS485 is a two-wire communication, a third
conductor is always needed that should be connected
between all nodes. This is because all nodes need a
reference to earth to prevent overvoltages arising in those
cases where the supply voltage on the different nodes
comes from different fuse groups, etc. This also requires
that the nodes have built-in galvanic isolation.
The cable must have a characteristic impedance of 120
ohm and in most cases does not need to be shielded.
At higher rates and in difficult environments, such as in
industrial premises, shielded cable may be necessary.
In order to include the third conductor to all nodes, a
4-conductor can be chosen with two separate twisted
pairs. A 2-conductor with an extra earth conductor that is
not twisted in the pair is an alternative.
6.2.8 Galvanic isolation
Thanks to special optical components and DC/DC
converter, the room controller is galvanically isolated
from the network. This gives the room controller good
protection against unforeseen overvoltages and incorrect
connections.
6.2.9 Polarisation
When all nodes on the network are “silent” the signal
level becomes undefined, due to the fact that when a
node is set to listening mode the network is not loaded at
all and then adds no voltage. This means that the entire
network in principle becomes completely de-energised
and with that sensitive to external disturbances. The signal
level then lies around 0 volts and risks “fluttering” over
0.2 volts and below 0 volts, which would be interpreted
as ones and zeros in the nodes.
With a polarisation connected to the bus, the signal level
is drawn up to a stable level and prevents the signal from
reaching the zero level.

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6.2.10 Termination
End terminations can be connected to remove reflection
interference on the network. This is normally only needed
at higher data rates than 9600 bits/sec.
6.2.11 Electromagnetic interference
At data rates 9600 bits/sec, ones and zeros are pulsed
out on the network cable with the frequency 4.8 kHz.
As data signals do not consist of pure sinusoidal waves,
even some higher frequencies occur on the signal. This is
because good communication requires a so clean “square
wave” as possible, i.e. with fast rising and falling of the
signal.
To limit electromagnetic interference (EMI), there is a
built-in “slew rate” limitation in the transceiver, that
results in too fast rising and falling on the signals is
rounded off slightly.
6.2.12 Shielded cable
Shielded cable is used in such environments where
strong electromagnetic interference occurs, for example,
in industrial premises. The shield also removes radiated
interference from the Modbus network.
6.3 Network structure
In order to build up a stable and functioning network
with several nodes, it is necessary to take into account a
number of important aspects. Otherwise there is a risk
that communication problems will arise. An incorrect
connection can even damage nodes or the central
converter.
We therefore recommend that you read through the
following chapter carefully and that you also study
applicable standards, for example, the Modbus standard,
EIA-485 standard, ESD-protection, etcetera.
6.3.1 Segments
A network can be built up of one or more segments,
depending on the physical appearance of the installation site.
A segment is also called a “loop” and is the physical
circuit that runs between the nodes on the network.
Each segment must be built up as a bus, which means the
circuit forms a long straight line with nodes connected
directly on the segment. This means that you should not
connect long branches on the segment to route out to
the nodes. Therefore you should route both incoming
and outgoing cables all the way into the node’s screw
terminals.
If you still connect the nodes via long branches, reflective
interference can occur as each branch becomes a new
small segment.
6.3.2 Number of nodes
Each segment has a maximum limit of how many nodes
you may connect. If you exceed the maximum limit
you risk overloading the segment, which can result in
communication errors or that the nodes are destroyed.
The RS485 standard states that each segment shall be
able to handle 32 UL (unit loads). Depending on how
large a unit load each node has, you can calculate how
many nodes the segment can handle. The room controller
has a lower unit load than many other products, which
allows a higher number of room controllers per segment.
In many cases you need to install different types of nodes,
even different brands, on one and the same segment. If
the nodes have different unit loads, you need to calculate
the total unit load according to the following example:
15 R221 á 1 UL = 15 UL
60 R402 á 0.1 UL = 6 UL
1 RS485-converter á 1 UL = 1 UL
Total UL on the segment: 22 UL
(remaining capacity: 10 UL)
Another important thing to remember, is to not
overestimate the number of nodes per segment, as in
many cases it is a good idea to divide the network into
different segments. As all nodes on the segment parts
have the same electrical cable pair, they can all be subject
to interference if a single node should fail. In the worse
case scenario, a single faulty connection with e.g. 24 V
into the segment would cause all nodes on the segment
to be destroyed.
6.3.3 Network cable
The cable shall be of the type twisted pair cable. The
cable shall also have a third conductor for the earth. If you
have a shielded cable, the shield must not be used as the
earth wire. Normally a 4-way pair twisted cable is used,
where one pair is used for data transfer and one of the
conductors in the other pair as the earth wire.
Note that if the cable has a shield, this must always be
connected (see point 6.3.4 below about the shielded
cable).
G0 + -

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6.3.4 Shielded cable
Shielded cable is only needed in certain cases where
the surrounding environment has a great deal of radio
interference, for example, in industrial premises. The
data signals transmitted over the network can also, to a
certain degree, transmit radio interference that needs to
be shielded, but this usually applies to much higher data
rates.
If you select a cable that has shielding, this must always
be connected. In other cases, there is a risk the shield
picks up radio interference and thus radiates the cables
with this interference.
The shield must always be connected at one end between
two nodes. Otherwise there is a risk of earth currents
arising in the shield, which can result in interference. If
you use the shield, both the earth wire and shield then go
in on screw terminal C2 on one node. On the other node
only the earth wire is connected.
6.3.5 Earth wire
All nodes shall be connected to a protective earth to
prevent potential level differences occurring between
different nodes
(Voltages). Terminal G0 should therefore be connected
between all nodes and at one point in the network be
connected to the protective earth.
Note that the shield in a shielded cable cannot be used as
an earth cable, a separate conductor needs to be used. A
4-way pair twisted cable should be chosen, where one of
the conductors in the pair can be used as the earth wire.
Never use conductors that do not have plastic insulation
for the protective earth, as this can come into contact
with an incorrect point on the room controller’s circuit
board and can cause it to fail.
Note nodes that lack galvanic isolation shall not be
connected to the protective earth. Its supply neutral
must instead be connected on the same 24 V side. If you
use a common transformer on several nodes, it is very
important that the phase and neutral on the 24 V supply
are connected on the same terminal number on all nodes.
Otherwise there is a risk of the nodes failing.
G0 + - G0 + -

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6.3.6 Polarisation
In order to get a stable level on the network where all
nodes are “silent”, a clear signal level is needed that is
above 0.2 volts. This is done by installing a polarisation
device on the RS-485 segment or by activating
polarisation if this function is built-in on any of the devices
in the segment.
The voltage level is about +5 volts if the segment is
unloaded. The polarisation voltage drops depending on
the number of nodes on the segment. The signal must be
at least above 0.2 volts to give a safe level.
This polarisation should only be activated on a single node
on each segment. If you have several segments in the
network that are separated by a converter or repeater,
there needs to be polarisation on each segment.
Placement of the polarisation is not so important, but
is usually in an equipment cabinet or the like where the
converter is placed.
6.3.7 End termination
If communication problems occur, you can try to add a
120 Ohm resistance between plus and minus.
End termination shall always be activated on the nodes
that are placed first and last on the segment. You must
never activate the termination on more than two nodes
per segment, as this can disrupt all communication or in
the worse case overload or even destroy the nodes on the
segment.
However, termination is not normally necessary for such
low data rates as 9600 bits/sec.
6.4 Network troubleshooting
In order to check that the network is correct, it should be
measured with an oscilloscope. Even if all communication
seems to work normally, you should check that there is
no superimposed interference on the network. These can
namely vary in strength and should be fault traced.
You need an isolated oscilloscope to be able to make
correct measurements. For example, you can use a hand-
held battery-powered oscilloscope. You can also use an
oscilloscope that is supplied with 230 V, but you then
need an isolator for 230 V connection (230 V in and out).
On the other hand, this can be heavy and awkward to carry.
The plus pole of the probe should be connected to the
network’s positive channel, i.e. plus conductor. The earth
wire of the probe should be connected to the negative
channel, minus conductor.
Set the amplitude to about 2 volts/square and a time
setting of 2 ms/square. Set the trigger level to about 2
volts and set the timer point laterally at 1 square from
the left edge of the screen. A complete Modbus packet
from the server should then be seen as well as the node’s
response back to the server.
Check that the signals are square shaped by temporarily
zooming in on time. If the pulses are too rounded at the
rising and falling, this indicates that there is too much
capacitance on the network.
Transmission
from the server Response
from the node
This can mean that the network cable is of the wrong
type, or that a node on the network is incorrect and gives
a capacitive load on the network. Also make sure that
both the server’s and the nodes’ signal levels are strong
enough. Ideally, the levels should go up to +5 volts and
down to -5 volts, but are usually sufficient if the levels are
from +1 volt to -1 volt.
It is important that the positive level goes over 0.2 volts
(with a margin) and below 0 volts for the negative pulse.
Depending on where on the network you are measuring,
the strength of the server’s and the nodes’ levels will be
different depending on the voltage drop in the cables.
If you measure at the server, the nodes’ signals usually
appear a little weaker. If instead you measure at a node,
the server’s signal may be weaker than that of the node.
Assume each node’s conditions at its physical location
to check the traffic on the network. It is important to
check that there is not too strong signal interference. For
example, if there is a strong 50 Hz signal that causes the
signal to flutter up and down (see the picture above), this
indicates that there is a faulty connection somewhere on
the network.

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If you have a problem with interference on the network,
it is a good idea to go through the nodes one at a time
and narrow down where the fault is located. Make sure
that the server transmits continuous Modbus packets to
one node at a time and see whether the node responds
or not. If possible, connect a portable computer to the
segment. By using a RS232 converter (or USB), you avoid
any TCP/IP problems and can communicate directly with
the nodes. You can then easily select which node you
wish to test.
Note! Always disconnect the ordinary converter first.
You can also disconnect parts of the segment to find
where the fault is located. Start with the first node on the
segment. Disconnect the others. Run tests on the node. If
the node works correctly, connect the next node on the
segment and check that both still work on the segment,
etcetera.
Also keep an eye on the oscilloscope’s signals successively
when node after node is connected. A single faulty node
can disrupt the rest.
Note that some monitoring programs sometimes report
faults due to the incorrect setting of timeout parameters.
Some monitoring programs interrupt the reading of a
segment if a response from a single node is missing. It can
sometimes help to restart the program to ensure that you
see the current status on the network.
6.5 Deviations from the Modbus standard
The room controller is designed based on the requirements
and standards specified in the document “Modbus over
serial line, specification and implementation guide v1.01”
(below called “the standard”), issued by the organisation
Modbus-IDA (website www.modbus.org). In order to
meet market requirements the manufacturer has chosen
to implement some properties differently from the
standard, see below.
6.5.1 RTU communication format
The supplied room controller model is set to communicate
with 8/E/1 (8 data bits, even parity and 1 stop bit)
The standard prescribes that odd parity should be used
(according to the standard’s section 2.5.1). The room
controller can be factory programmed to odd parity or
two stop bits if required or to some other communication
parameters.
6.5.2 Data rate
The supplied room controller model is set to communicate
at 19200 bits/sec.

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6.6 Modbus register
Here follows all registers available in the room controller.
6.6.1 Area 0x
1-bit register (read/write)
Command 01 for reading (Read coil status),
Command 05 (Force single coil) or 15 (Force multiple coils) for writing.
6.6.2 Area 1x
1-bit status register (read)
Command 02 (Read input Status) for reading.
Register name Reg. no. Function Beskrivning Min Max Unit
00001 0 Invert output D1
Inverting means that output D1 goes on instead
of o and the reverse. 0 = Not inverted, 1 =
Inverted.
0 1 0=o
1=on
00002 1 Invert output D2
Inverting means that output D2 goes on instead
of o and the reverse. 0 = Not inverted, 1 =
Inverted.
0 1 0=o
1=on
00003 2 Invert output A1 Inverting means that output A1 gives 10 - 0V
instead of 0 - 10V. 0 = Not inverted, 1 = Inverted. 0 1 0=o 1=on
00004 3 Invert output A2 Inverting means that output A2 gives 10 - 0V
instead of 0 - 10V. 0 = Not inverted, 1 = Inverted. 0 1 0=o 1=on
00005 4 Force output D1 Activate force function for output D1 0 1 0=o
1=on
00006 5 Force output D2 Activate force function for output D2 0 1 0=o
1=on
00007 6 Set force output A1 Activate force function for output A1 0 1 0=o
1=on
00008 7 Force output A2 Activate force function for output A2 0 1 0=o
1=on
00009 8 Set NO occupancy
sensor
Invert occupancy sesor function 0 = normally
closed, 1= normally open. Deafult = 1 0 1 0=o 1=on
Register name Reg. No. Function Description Unit
10001 0 Status on output D1 1 = D1 on, terminal 1 is active 0=o
1=on
10002 1 Status on output D2 0 = D2 o, teminal 3 is not active
1 = D2 on, teminal 3 is active
0=o
1=on
10003 2 Status on input I2 0 = I2 o, terminal 7 is not set (oating)
1 = I2 on, terminal 7 is set (0V)
0=o
1=on
10004 3 Occupancy status 0 = occupancy dissconnected
1 = occupancy connected
0=o
1=on
10005 4 Condensation status 0 = no condensation
1 = condensation 0 = o, 1 = on

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6.6.3 Area 3x
16-bit status register (read)
Command 04 (Read input registers) for reading.
Register name Reg. No. Function Description Unit
30001 0 Regulated room temperature 0 - 319 = 0 - 31,9°C in stages of 0,1°. °C
30002 1 External temperature sensor 0 - 319 = 0 - 31,9°C in stages of 0,1°. °C
30003 2 Measured condensation volt 0 - 255 = 0 - 5,1V in stages of 0,02V.
30004 3 Desired room temperature 2,0 - 30,0°C in stages of 0,1 degree steps (20 - 300) °C
30005 4 Current operation mode 1 = DAY, 2 = NIGHT, 3 = SAVE.
30006 5 Heating eect The room controllers current heating eect in %. %
30007 6 Cooling eect The room controllers current cooling eect in %. %
30008 7 Eect to output D1 The room controllers current eect to output D1 in %. %
30009 8 Eect to output D2 The room controllers current eect to output D2 in %. %
30010 9 Eect to output A1 The room controllers current eect to output A1 in %. %
30011 10 Eect to output A2 The room controllers current eect to output A2 in %. %
30012 11 Voltage output, output A1 0-110 = 0-11,0 Volts V
30013 12 Voltage output, output A2 0-110 = 0-11,0 Volts V
30014 13 Program no. 1 (two last numbers) 0-99
30015 14 Program no. 1 (two rst numbers) 0-99
30016 15 Version number 0-99
30017 16 Drawing no. 1 (two last numbers) 0-99
30018 17 Drawing no. 2 (two rst numbers) 0-99

LUNAdMB
 Swegon reserves the right to alter specications. 08/04/2021
6.6.4 Area 4x
16-bit register (read/write)
Command 04 (Read holding register) for reading, command 06 (Preset single register) or command 16 (Preset multiple registers) for
writing.
Register name Reg. no. Function Description Min Max Units
40001 0Force meas- ured
room temperature
Applies to the controlling room temperature. Value
0-318 = 0-31,8°C. Force o: write FFFFH. Reading shows
FFFFH when force is o. *)
0318 °C
40002 1Force desired
temperature
The ModBus value replaces the temperature for the
current operation mode. Value 20-300 = 2,0 - 30,0°C
in stages of 0,5°. Force o: write FFFFH. Reading shows
FFFFH. *)
20 300 °C
40003 2 Force operation
mode
The values 1-3 from ModBus, activates the DAY (1),
NIGHT (2), or SAVE (3) operation mode with lower
priority than the timer, occupancy and external
contact. Force o: write FFFFH. Reading shows FFFFH. *)
0 3
40004 3Force heating
outputs
The ModBus value replaces the heating set point in
the controller to the output logic. Forcing of cooling
outputs has to be o. Force o: write FFFFH. Reading
shows FFFFH when force is o. *)
0 100 %
40005 4 Force cooling
outputs
The ModBus value replaces the cooling set point in
the controller to the output logic. Forcing of heating
outputs has to be o. Force o: write FFFFH. Reading
shows FFFFH when force is o. *)
0 100 %
40006 5 Force power to
output D1
The ModBus value replaces the calculated eect value
of the controller to output D1. Force o: write FFFFH
Reading shows FFFFH when force is o. *)
0 100 %
40007 6 Force power to
output D2
The ModBus value replaces the calculated eect value
of the controller to output D2. Force o: write FFFFH
Reading shows FFFFH when force is o. *)
0 100 %
40008 7 Force power to
output A1
The ModBus value replaces the calculated eect value
of the controller to output A1. Force o: write FFFFH
Reading shows FFFFH when force is o. *)
0 100 %
40009 8 Force power to
output A2
The ModBus value replaces the calculated eect value
of the controller to output A2. Force o: write FFFFH
Reading shows FFFFH when force is o. *)
0 100 %
40010 9
Set room
temperature for
DAY mode
The ModBus value changes the selected room
temperature for the DAY operation mode in the room
controller. Value 20-300 = 2,0 - 30,0°C in 1/2°-stages.
20 300 °C
40011 10
Set room
temperature for
NIGHT mode
The ModBus value changes the selected room
temperature for the NIGHT operation mode in the
room controller. Value 20-300 = 2,0 - 30,0°C in
1/2°-stages.
20 300 °C
40012 11
Set room
temperature for
SAVE mode
The ModBus value changes the selected room
temperature for the SAVE operation mode in the room
controller. Value 20-300 = 2,0 - 30,0°C in 1/2°-stages.
20 300 °C
40013 12
Min. adjustable
room temperature
for DAY mode
The ModBus value changes the selected minimum
room temperature for the DAY operation mode in
the room controller. Value 20-300 = 2,0 - 30,0°C in
1/2°-stages.
20 300 °C
40014 13
Max. adjustable
room temperature
for DAY mode
The ModBus value changes the selected maximum
room temperature for the DAY operation mode in
the room controller. Value 20-300 = 2,0 - 30,0°C in
1/2°-stages.
20 300 °C
40015 14
Room tem-
perature sensor
calibration
The ModBus value changes the selected calibration
value for the room units built-in sensor. Value -99 - +99
= -9,9° - +9,9°K.
-99 99 °K
40016 15
External room
temperature
sensor calibration
The ModBus value changes the selected calibration
value for the exter- nal sensor. Value -99 - +99 = -9,9°
- +9,9°K.
-99 99 °K