LOYTEC L-STAT User Manual

L-STAT

L-STAT™ Room Operator Panel

User Manual

LOYTEC electronics GmbH

Contact

LOYTEC electronics GmbH

Blumengasse 35

1170 Vienna

AUSTRIA/EUROPE

[e-mail]

http://www.loytec.com

Version 1.0

Document № 88085801

LOYTEC MAKES AND YOU RECEIVE NO WARRANTIES OR CONDITIONS,

EXPRESS, IMPLIED, STATUTORY OR IN ANY COMMUNICATION WITH YOU,

AND

LOYTEC SPECIFICALLY DISCLAIMS ANY IMPLIED WARRANTY OF
MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. THIS
PRODUCT IS NOT DESIGNED OR INTENDED FOR USE IN EQUIPMENT

INTENDED FOR SURGICAL IMPLANT INTO THE BODY OR OTHER

APPLICATIONS INTENDED TO SUPPORT OR SUSTAIN LIFE, FOR USE IN

FLIGHT CONTROL OR ENGINE CONTROL EQUIPMENT WITHIN AN

AIRCRAFT, OR FOR ANY OTHER APPLICATION IN WHICH IN THE FAILURE

OF SUCH PRODUCT COULD CREATE A SITUATION IN WHICH PERSONAL

INJURY OR DEATH MAY OCCUR. LOYTEC MAKES NO REPRESENTATION

AND OFFERS NO WARRANTY OF ANY KIND REGARDING OF ANY

THIRDPARTY COMPONENTS MENTIONED IN THIS MANUAL.

No part of this publication may be reproduced, stored in a retrieval system, or transmitted,

in any form or by any means, electronic, mechanical, photocopying, recording, or otherwise,

without the prior written permission of LOYTEC.

LC3020, L-Chip, L-Core, L-DALI, L-GATE, L-INX, L-IOB,

LIOB-Connect, LIOB-FT, L-IP, LPA, L-Proxy, L-Switch, L-Term,

L-VIS, L-WEB, L-ZIBI, ORION™ stack and Smart Auto-Connect™ are

trademarks of LOYTEC electronics GmbH.

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Contents

1 Introduction .................................................................................................. 7

1.1 Overview .............................................................................................................. 7

1.2 Key Features ........................................................................................................ 8

1.3 LCD Segments ..................................................................................................... 9

2 Quick-Start Guide ...................................................................................... 13

2.1 Hardware Installation ....................................................................................... 13

2.2 User Interface .................................................................................................... 14

2.2.1 General Description ................................................................................. 14

2.2.2 Operating Modes ...................................................................................... 15

2.2.3 Access Levels ........................................................................................... 16

2.2.4 Device Settings ........................................................................................ 17

2.2.5 Factory Default ........................................................................................ 18

2.3 Getting Started with the Configurator ............................................................ 19

3 Modbus ........................................................................................................ 20

3.1 Introduction ................................................................................................ ....... 20

3.2 Modbus Network ............................................................................................... 20

3.3 Modbus Register Usage for Value Display ...................................................... 21

3.4 Modbus Register Description ........................................................................... 22

3.4.1 Data Registers .......................................................................................... 22

3.4.2 Device Settings ........................................................................................ 30

3.4.3 Configuration Registers ........................................................................... 33

3.4.4 Model Information Registers (read only) ................................................. 48

3.4.5 Device Information Registers (read only) ................................................ 49

3.4.6 NFC Registers ................................................................ .......................... 50

3.4.7 Value Scaling and Stepwidth ................................................................... 51

4 NFC .............................................................................................................. 52

4.1 General Description .......................................................................................... 52

4.2 Copy the L-WEB Project URL to the NFC Tag Memory ............................. 53

5 IR-Remote Control Operation .................................................................. 54

5.1 General Description .......................................................................................... 54

5.2 Remote Control Pairing .................................................................................... 55

6 Firmware Update ........................................................................................ 56

6.1 Firmware Update via the Web Interface ......................................................... 56

7 Troubleshooting .......................................................................................... 57

7.1 Technical Support ............................................................................................. 57

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8 Specifications .............................................................................................. 58

8.1 Physical Specifications ...................................................................................... 58

8.2 Sensor Specifications ........................................................................................ 58

9 References ................................................................................................... 60

10 Revision History ......................................................................................... 61

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Abbreviations

ASCII .................................. American Standard Code for Information Interchange

IR ........................................ Infrared

LCD..................................... Liquid Crystal Display

NDEF .................................. NFC Data Excahnge Format

NFC ..................................... Near Field Communication

RGB .................................... Red, Green, Blue

URI ...................................... Uniform Resource Identifier

URL..................................... Uniform Resource Locator

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1 Introduction

1.1 Overview

The L-STAT is a room control device with a modern look that fits any interior design. It is
directly connected to a LOYTEC controller with a Modbus interface such as LIOB-AIR, L­ROC or L-INX.

Up to 16 L-STAT devices can be connected to one controller to offer control at different
locations for the largest rooms. The L-STAT is equipped with a segmented LCD display
featuring an RGB backlight with adjustable color, offering a neat way to make the L-STAT
match the interior color concept of an office building. Eight capacitive touch buttons are
used to cycle through sensor values, display parameters, and adjust setpoints. Up to four
external buttons can be accessed and processed by the controller.

The L-STAT’s internal sensors measure temperature, humidity, dew point, occupancy and
CO2 level. Sensor values can be displayed in SI or US units. Additionally, the date and time
as well as the current level of eco-friendliness are also displayed on the LCD display.
Parameters controlled by the controller’s logic can be overridden on the L-STAT, such as
for occupancy, air conditioning, and ventilation. A direct access mode is available to
quickly adjust the most important setpoints e.g. for temperature and ventilation control.

A buzzer provides acoustic feedback for the touch buttons and can also be used to indicate
alarms and error states. To prevent unauthorized modifications, two access levels (end user,
system integrator) are used, which are secured via 4-digit pin codes. Device replacement,
firmware upgrade, and L-STAT configuration are performed with very little effort through
the controller. The L-STAT device is represented in the controller by a simple data point
interface, which can be directly connected to the IEC 61131 or IEC 61499 logic application
and offers all common functions for data points such as alarming, scheduling, trending,
historic filters, math functions, etc.

Using an NFC tag, the L-STAT transmits the URL of an L-WEB project to mobile devices
for more extensive control and administrative tasks. Last but not least, the L-STAT comes
with a built-in infrared receiver for comfortable remote control.

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1.2 Key Features

The different L-STAT models and their features are documented in Table 1.

Features

LSTAT-800-Gx-Lx

LSTAT-801-Gx-Lx

LSTAT-802-Gx-Lx

Modbus RTU Slave

  

NFC Tag

  

Buzzer

  

Internal

  

Internal Relative
Humidity Sensor

  

3 x Digital Inputs

1 x Analog Input

  

Infrared Receiver

  

Occupancy Sensor

-





CO2 Sensor

-

-



Table 1: Key Features

Not only the model type but also the enclosure color as well as the touch button layout is
defined with the order code. See Table 2 for possible order codes.

Possible Order Codes

Model Type 80x:

800, 801, 802 (see Table 1)

Enclosure Gx:

G1 – silver

G2 – black

G3 – white

Layout Lx:

L1 –

L2 –

L3 –

L4 –

L5 – L6 –

Table 2: Possible Order Codes

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1.3 LCD Segments

The following Figure shows the LCD of the L-STAT with all possible segments.

Figure 1: LCD Segments available on L-STAT

The following Table gives an overview of all available segments of the L-STAT LCD with
its defined names. The Table also shows which symbols are directly accessible via Modbus
registers (see Table 12 on Page 26).

Segment

Name

Description

Direct

Access

heat

Heating symbol



alarm_bell

Alarm bell symbol



drop

Drop symbol



drop_not

Cross out for drop symbol



alarm

Alarm symbol



light

Light bulb symbol



blinds

Sun blinds symbol



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Segment

Name

Description

Direct

Access

clock

Clock symbol



sun_left

Left half of sun symbol



sun_right

Right half of sun symbol



moon

Moon symbol



colon

Colon of the secondary display
It will only be accessible if the
secondary_display_direct_access_enabled
flag at the config_flags register at address
192 (Table 22 at Page 33) is set.



secondary_display

The secondary display is used to show
time, date and/or a short text depending
on the semantic meaning of a display
value or set point. It can also be directly
accessed via the Modbus register:
sec_display_direct_access_string
(see Table 23 on Page 34).



am_pm_symbols

These symbols are not directly accessible
but are shown along with the time when
12h time format has been selected.

-

cool

Cooling symbol



man_out

Man outside the house (no occupancy)



man_in

Man inside the house (occupancy)



arrow

Arrow symbol (to represent a set point)



temp_in

Temperature inside



temp_out

Tempareture outside



house

House symbol



text_symbols

The text symbols are not accessible via
Modbus but are shown at certain modes
or events.

-

key

The key symbol is primarily used to show
that a set point is pincode protected but it
can also be accessed via the symbol direct
access registers.



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Segment

Name

Description

Direct

Access

wind

Wind alarm symbol



rain

Rain alarm symbol



window

Window open alarm symbol



fan

Fan symbol



valve

Valve symbol



logo

Loytec logo symbol



green_leaf_3

The green leaf symbols can be used to
display the level of eco-friendliness or
to visualize environmental conditions.



green_leaf_2



green_leaf_1



green_leaf_0



bar_left_2

The left bar graph symbols can be used to
display a heating or cooling stage in
automatic or manual mode.



bar_left_1



bar_left_0



manual_left



auto_left



bar_right_2

The right bar graph symbols can be used
to display a fan stage or valve position in
automatic or manual mode.



bar_right_1



bar_right_0



manual_right



auto_right



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Segment

Name

Description

Direct

Access

main_display

The main display is primarily used to
show certain values. It is not accessible
directly.

-

unit_F

All unit symbols are not directly
accessible but are displayed along with a
display value or set point if the unit is set
in the corresponding configuration
register.

See Table 28 on Page 39 for display value
configuration
and Table 29 on Page 41 for set point
configuration.

-

unit_C

-

unit_cfm

-

unit_l/s

-

unit_m³/h

-

unit_Pa

-

unit_inWC

-

unit_V

-

unit_%

-

unit_%RH

-

unit_ppm

-

Table 3: LCD Segments Overview

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2 Quick-Start Guide

2.1 Hardware Installation

Please refer to the L-STAT installation sheet for further information on dimensions,
mounting and wiring.

Figure 2 shows the back view of the device with the connection terminals for Modbus, 24 V
DC-Supply and external buttons. The four external buttons share a common GND
connection which is not connected to the negative 24 V input terminal!

Figure 2: Back View LSTAT-80x-Gx-Lx

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2.2 User Interface

2.2.1 General Description

The user interface consists of the LCD for displaying any desired value and up to eight
touch buttons which are used to adjust set points and change settings. Additionally up to
four external push-buttons can be connected to the device.

Figure 3: Front View LSTAT-80x-Gx-Lx

Each button can individually be configured via a Modbus register for its function (see Table
24 on Page 35). The following listing gives you an overview which functionality can be
associated with the buttons.

UP DOWN

change set point or device setting in EDITING-mode
directly access a set point in DISPLAY-mode

ON OFF

no specific function, the button state can be requested to control lighting

OCCUPANCY

no specific function, the button state can be requested to set occupancy
state

MENU

long press: switch between DISPLAY-mode and EDIT-mode
short press: cycle through display values, set points or device settings

TB0

TB1

TB2

TB3

TB4

TB5

TB6

TB7

LCD

Touch Buttons

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2.2.2 Operating Modes

In Figure 4 the operating modes of L-STAT are depicted. Each operating mode gives access
to certain Modbus registers that can either be viewed or edited depending on the mode. The
following data is available on L-STAT:

 display values:

Are used to visualize data provided by the Modbus master or values
of internal sensors. It is viewed in DISPLAY-mode. For the display
value registers see Table 11 on Page 25 and Table 28 on Page 39 for
the corresponding display value configuration.

 set points:

Are used to visualize data that is provided by the Modbus master and
that can be edited by the user. It is shown in DISPLAY-mode and it
can be edited in EDIT-mode. For the set point registers see Table 32
on Page 44 and Table 29 on Page 41 for set point configuration.
The range in which a set point can be altered is defined by minimum
and maximum values that have to be written by the Modbus master.
Please refer to Table 33 on Page 45 and Table 34 on Page 46.

 device settings:

These values define some basic settings of the device itself. Please
refer to Table 5 on Page 17 for a listing of all device settings and to
Table 18, Table 19 and Table 20 on Page 30 f. for the corresponding
Modbus registers. Device Settings can only be edited by the system
administrator in EDIT-mode.

 offset values:

Are used to add a certain offset to a display value. This functionality
can be used to calibrate sensor values. Offset values can be editet by
the system administrator in CALIBRATION-mode directly at the
device or over Modbus. Please see Table 35 on Page 47 for the
offset value register.

Figure 4: Operating Modes of L-STAT

When the device powers up, it enters DISPLAY-mode and it will display the first display
value. When pressing the MENU-button the next value will be shown. First all active
display values and then all active set points are displayed. After the last set point, the
display will show the first display value again.

EDIT-mode is entered by pressing the MENU-button for more than 3 seconds. To enter
EDIT-mode as system administrator two additionally defined buttons (TB0 and TB4) need
to be pressed along with the MENU-button for more than 3 seconds. The system
administrator will also be able to view and edit the device settings. In EDIT-mode any
button that has no specific function can be used to cycle the values in the opposite direction.

CALIBRATION-mode will be entered for any display value when pressing one UP- and
one DOWN-button simultaneously for more than 3 seconds to adjust the offset. This mode
is secured by the system administrator password. CALIBRATION-mode is left when
pressing the MENU-button for more than 3 second or after a timeout of 1 minute.

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An overview of all possible operating modes is given in Table 4 below. The operating mode
can also be defined by the Modbus master by writing the user interface direct access register
(see Table 13 on Page 26).

Order of L-STAT Operating Modes

Description

0

DISPLAY-mode / display values

Display values are shown.

1

DISPLAY-mode / set points

Set points are shown.

2

EDIT-mode / set points

Set points can be edited.

3

EDIT-mode / device settings

Device settings can be edited

4

CALIBRATION-mode / offset values

Offset values can be edited

5

PINCODE-ENTRY / end user

The pincode for the end user has to be
entered to show and/or edit the requested
value.

6

PINCODE-ENTRY / system administrator

The pincode for the system administator
has to be entered to show and/or edit the
requested value.

7

DIRECT_ACCESS-mode / set points

A defined set point can be accessed and
edited without entering EDIT-mode. It
can be entered by pressing a defined
button (see Table 24 on Page 35).

Table 4: Operating Modes

2.2.3 Access Levels

The L-STAT has two access levels (end user & system administrator) with configurable
rights to display and edit values. Each access level is secured by a four digit pincode that
will be requested when EDIT-mode or DIRECT_ACCESS-mode is entered if the desired
value is pincode protected.
Per default the pincode for end user and system administrator access level is disabled (0000).

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2.2.4 Device Settings

The following Table gives an overview of the device settings accessible through the button
interface as well as via Modbus. For the corresponding Modbus registers please refere to
Table 18, Table 19 and Table 20 on Page 30 and following.

Device Setting

Possible Values

Default

Your Setting

Modbus Parity

Odd / Even / None

None

Modbus Baudrate

1.2kB / 2.4kB / 4.8kB / 9.6kB /

19.2kB / 38.4kB / 57.6kB / 115.2kB

57,6kB

Modbus Address

1 - 247

1

Pincode System
Administrator

0000 – 9999
(if 0000 the pincode is disabled)

0000

Pincode End User

0000 – 9999
(if 0000 the pincode is disabled)

0000

Color Setting LCD
Backlight Red

0% - 100%

100%

Color Setting LCD
Backlight Green

0% - 100%

100%

Color Setting LCD
Backlight Blue

0% - 100%

100%

Brightness LCD
Backlight

0% - 100%

100%

LCD Contrast

0% - 100%

100%

LCD Color Scheme

0 – user (as defined above)
1 – white
2 – red
3 – green
4 – blue
5 – orange
6 – magenta
7 – cyan

0

Time Format

24h / 12h

24h

Show Date

on / off

on

Show Time

on / off

off

Acoustic Feedback (for
Touch Buttons)

on / off

on

Goto First Display Value
(the first display value
will be displayed after 1
minute with no inter­action)

on / off

on

Display Auto Dim
(lcd brightness will be
dimmed after 2 minutes
with no interaction)

off / 50% / 10% / 0% / OCC*
* built-in occupancy sensor

activates display

off

Unit System

SI / US

SI

Device Restart

off – if a DOWN-button is pressed
the device will restart

-

Table 5: Device Settings

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2.2.5 Factory Default

The factory default configuration for display values and set points depends on the specific
L-STAT model. The following Table shows the factory default values for each model. See
Table 28 on Page 39 for display value configuration and Table 29 on Page 41 for set point
configuration.

LSTAT-800-Gx-Lx

LSTAT-801-Gx-Lx

LSTAT-802-Gx-Lx

display_value_0

Internal Temperature

Internal Temperature

Internal Temperature

display_value_1

Relative Humidity

Relative Humidity

Relative Humidity

display_value_2

Dew Point

Dew Point

Dew Point

display_value_3

-

-

CO2 Level

display_value_4

Modbus Voltage

Modbus Voltage

Modbus Voltage

display_value_5

External Temperature

External Temperature

External Temperature

display_value_6

to

display_value_15

- - -

set_point_0

Internal Temperature

Set Point

Internal Temperature

Set Point

Internal Temperature

Set Point

set_point_1

Fan Stage

Fan Stage

Fan Stage

set_point_2

to

set_point_15

- - -

Table 6: Factory Default for L-STAT Models

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2.3 Getting Started with the Configurator

A Modbus Template for the L-INX configurator with all available datapoints can be
downloaded from the Libraries/Templates Download section on the LOYTEC website:

https://www.loytec.com/support/download

For further information on using the L-INX configurator for Modbus devices please refer to
the L-INX/L-GATE user manual [1].

Please refer to Chapter 3 for a listing of all available Modbus Registers.

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3 Modbus

3.1 Introduction

The L-STAT operates as a Modbus slave in Modbus RTU mode. The default baudrate is set
to 57600, the default parity is set to ‘none’ and the default address is set to 1. The
communication with a Modbus master device will work with Modbus function code 0x03
(Read Holding Registers). Section 3.4 shows all available Modbus registers.

3.2 Modbus Network

Figure 5 illustrates a typical Modbus network setup with a linear bus topology used to
connect several slave devices to a master device. The transmission line has to be terminated
at both ends. At the master device this can be done by connecting an L-Term (LT-04)
device. Each L-STAT slave device is equipped with a built-in 120Ω termination resistor.
Set the termination switch to OFF except on the last device on the bus where the termination
switch must be turned ON.

Figure 5: Modbus Network

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3.3 Modbus Register Usage for Value Display

The following Figure 6 shows, which Modbus registers have influence on a displayed value,
unit, text on the secondary display or symbols. Depending on settings in configuration
registers different combinations are possible to achieve the desired result.

Figure 6: Modbus Register Usage for Value Display

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3.4 Modbus Register Description

In the following sections the L-STAT Modbus registers are described. Abbrevations are
explained at the end of each table. ‘R’ indicates that this value is not used by now and that it
is reserved for future use. Square brackets ‘[]’ indicate that this is the initial value. Numbers
with the prefix ‘0x’ are hexadecimal values. Values with no prefix indicate decimal values.

3.4.1 Data Registers

These registers contain data that is changing frequently. This data is not stored persistent in
the L-STAT device and will be lost after a reboot.

Register Name

Register
Address

Bit Position

15

14

13

12

11

10 9 8 7 6 5 4 3 2 1 0

present_state

0

0x0000

R

[0] R [0] R [0]

Occu

[0]

EB3 [0]

EB2 [0]

EB1 [0]

EB0 [0]

TB7 [0]

TB6 [0]

TB5 [0]

TB4 [0]

TB3 [0]

TB2 [0]

TB1 [0]

TB0 [0]

short_pressed

1

0x0001

IRC

[0]

NFC

[0] R [0]

Occu

[0]

long_pressed

2

0x0002

FD
[1]

ERR

[0]

[0]

SPC

[0]

The present_state register always represents the actual state of the buttons and the
occupancy sensor.

The short_pressed and long_pressed states will remain set until the flags are cleared by the
Modbus master by writing a logical ‘1’ to the specific flag, except the occupancy flag that
is cleared automatically after the occupancy_timeout has expired.

Bits 0-11 indicate the states of the buttons (TBx-touch button, EBx-external button)

Occu:

occupancy flag, defines if occupancy is detected by built-in occupancy sensor
(applies to LSTAT-801-Gx-Lx and LSTAT-802-Gx-Lx)

NFC:

NFC flag, is set if an NFC field was detected. This gives the information that a
user is reading the NFC tag memory with an NFC enabled mobile device. For
more information see Chapter 4.

IRC:

infrared remote control flag, is set when an infrared remote control code was
received. The received code can be read via the ir_remote_control_command
register at register address 32 (see Table 9 on Page 24).

SPC:

Set point changed flag, is set when a set point was changed on the L-STAT.
Each set point has an individual change flag at register address 3 (see Table 8 on
Page 23).

DOC:

device setting or offset value changed flag, is set when a device setting or offset
value was changed on the L-STAT. The specific change flags can be read via the
registers at address 4 and 5 (see Table 8 on Page 23).

ERR:

error flag, is set when an internal error has occurred.

FD:

factory default (unconfigured) flag, is set when the device has booted with factory
default settings.

 Button states and flags can have the following binary values:

1 – pressed, set
0 – released, cleared

 The present_state register is only updated in DISPLAY-mode!

(For a list of possible modes see Table 4 on Page 16)

Table 7: Button States and Flags

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Register Name

Register
Address

Bit Position

15

14

13

12

11

10 9 8 7 6 5 4 3 2 1 0

change_flags_

set_points

3

0x0003

SP15

[0]

SP14

[0]

SP13

[0]

SP12

[0]

SP11

[0]

SP10

[0]

SP9

[0]

SP8

[0]

SP7

[0]

SP6

[0]

SP5

[0]

SP4

[0]

SP3

[0]

SP2

[0]

SP1

[0]

SP0

[0]

change_flags_

device_settings

4

0x0004

R

[0] R [0] R [0] R [0] R [0] R [0] R [0] R [0]

DS7

[0]

DS6

[0]

DS5

[0]

DS4

[0]

DS3

[0]

DS2

[0]

DS1

[0]

DS0

[0]

change_flags_

offset_values

5

0x0005

OV15

[0]

OV14

[0]

OV13

[0]

OV12

[0]

OV11

[0]

OV10

[0]

OV9

[0]

OV8

[0]

OV7

[0]

OV6

[0]

OV5

[0]

OV4

[0]

OV3

[0]

OV2

[0]

OV1

[0]

OV0

[0]

The change flag register states will remain true until the flags are cleared by the Modbus
master by writing a logical ‘1’ to the specific flag.

 Change flags can have the following binary values:

1 – true
0 – false

 If a set point, device setting or offset value is changed by the user the corresponding

flag will be set and it has to be cleared by the Modbus master again by writing the flag
to 0.

SP0 to SP15:

change flags for set_point_0 to set_point_15 (see Table 32 on Page 44)

DS0:

change flag for modbus_parameter on register address 176 (see Table
18 on Page 30)

DS1:

change flag for pincode_system_administrator on register address 177
(see Table 19 on Page 30)

DS2:

change flag for pincode_end_user on register address 178 (see Table
19 on Page 30)

DS3:

change flag for lcd_color_red on register address 179 (see Table 20 on
Page 31)

DS4:

change flag for lcd_color_green on register address 180 (see Table 20
on Page 31)

DS5:

change flag for lcd_color_blue on register address 181 (see Table 20
on Page 31)

DS6:

change flag for lcd_brightness_contrast on register address 182 (see
Table 20 on Page 31)

DS7:

change flag for user_interface_settings on register address 183 (see
Table 20 on Page 31)

OV0 to OV15:

change flags for offset_value_0 to offset_value_15 (see Table 35 on
Page 47)

Table 8: Change Flags

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Register Name

Register
Address

Bit Position

15

14

13

12

11

10 9 8 7 6 5 4 3 2 1 0

ir_remote_control_

command

32

0x0020

button_code

[0x00]

remote_id

[0x00]

This register provides the button_code and remote_id of a valid command received via the
infrared receiver. See Chapter 5 for detailed information.

 Whenever a command was received the ir_remote_control_command register is

updated and the IRC flag of the short_pressed register at address 1 is set (see Table 7
on Page 22).

Table 9: IR Remote Control Command

The following Table gives an overview of the internal sensor values. These registers can be
read over Modbus and can be used as source for a display value if configured. As described
in Section 2.2.2 on Page 15 there are up to 16 display values used to visualize data.
Each display value has two 16 bit configuration registers to specify the values displayed.
Display values (register address 64 to 79) are read- and writable over Modbus.

Register Name

Register
Address

Bit Position

15

14

13

12

11

10 9 8 7 6 5 4 3 2 1 0

sensor_value_0

48

0x0030

internal temperature

sensor_value_1

49

0x0031

external temperature

sensor_value_2

50

0x0032

relative humidity

sensor_value_3

51

0x0033

dew point

sensor_value_4

52

0x0034

reserved

sensor_value_5

53

0x0035

amount CO2 (applies only to LSTAT-802-Gx-Lx)

sensor_value_6

54

0x0036

L-STAT supply voltage

sensor_value_7

55

0x0037

L-STAT CPU temperature

sensor_value_8

56

0x0038

L-STAT CPU voltage

 A sensor value can be used as source for a display value. Therefor the DSSA or DSEU

bit as well as the semantic meaning at the corresponding display value configuration at
address 256 to 286 has to be set (see Table 28 on Page 39). If the DSSA or DSEU bit
is set this specifies that a sensor value is used instead of a display value. The semantic
meaning specifies which sensor value is used as source for displaying. For an overview
on this topic please see Figure 6 on Page 21.

 Sensor_value_0, sensor_value_1 and sensor_value_3 are 16 Bit signed values. All

other sensor values are defined as 16 Bit unsigned since there are no negative values to
expect. The values are scaled as described in Table 39 at Page 51.

Table 10: Sensor Values

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Register Name

Register
Address

Bit Position

15

14

13

12

11

10 9 8 7 6 5 4 3 2 1 0

display_value_0

64

0x0040

[0x0000]

display_value_1

65

0x0041

[0x0000]

display_value_2

66

0x0042

[0x0000]

display_value_3

67

0x0043

[0x0000]

display_value_4

68

0x0044

[0x0000]

display_value_5

69

0x0045

[0x0000]

display_value_6

70

0x0046

[0x0000]

display_value_7

71

0x0047

[0x0000]

display_value_8

72

0x0048

[0x0000]

display_value_9

73

0x0049

[0x0000]

display_value_10

74

0x004A

[0x0000]

display_value_11

75

0x004B

[0x0000]

display_value_12

76

0x004C

[0x0000]

display_value_13

77

0x004D

[0x0000]

display_value_14

78

0x004E

[0x0000]

display_value_15

79

0x004F

[0x0000]

 The DSSA or DSEU bit at the corresponding display value configuration at address

256 to 286 has to be cleared to display the content of a display value register (see
Table 28 on Page 39). If the DSSA or DSEU bit is cleared this specifies that a display
value is used instead of a sensor value. The semantic meaning specifies which text is
displayed along with the specific display value. For an overview on this topic please
see Figure 6 on Page 21.

 All registers are 16 Bit signed values. Depending on the modbus_unit specified with

the corresponding display value configuration register at address 256 to 287 (Table 28
at Page 39) the value needs to be scaled as described in Table 39 at Page 51 to achieve
the desired result.

Table 11: Display Values

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Register Name

Register
Address

Bit Position

15

14

13

12

11

10 9 8 7 6 5 4 3 2 1 0

symbol_direct_

access_0

96

0x0060

symbol_direct_

access_1

97

0x0061

symbol_direct_

access_2

98

0x0062

symbol_direct_

access_3

99

0x0063

symbol_direct_

access_4

100

0x0064

Symbols of the LCD can be directly set by writing these registers. For an overview of all
LCD segments please see Table 3 on Page 12.

2 bits are reserved per symbol indicating the state that can have the following values:

00 – disabled, symbol is not visible
01 – enabled, symbol is visible
10 – blinking slow (1Hz)
11 – blinking fast (2Hz)

 For the house symbol the initial value is set to ‘01’ per default.

Table 12: Symbol Direct Access

Register Name

Register
Address

Bit Position

15

14

13

12

11

10 9 8 7 6 5 4 3 2 1 0

user_interface_

direct_access

101

0x0065

EU/

SA
[0]

ui_mode

[0x00]

ui_index

[0x00]

This register can be read to get information of which value is currently displayed. It can
also be written to determine the displayed value.

 For a listing of all L-STAT operating modes see Table 4 on Page 16.

EU/SA:

defines the current access level (0 – end user, 1 – system administrator)

ui_mode:

defines the user interface mode the device is currently operating in

ui_index:

defines the index of the value currently displayed

Please see the following examples:

0x0001 –

This means that display_value_1 is currently displayed in DISPLAY-mode
for the end user.

0x8200 –

This means that set_point_0 is currently edited by the system administrator
in EDIT-mode.

Table 13: User Interface Direct Access

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Register Name

Register
Address

Bit Position

15

14

13

12

11

10 9 8 7 6 5 4 3 2 1 0

buzzer_direct_

access_0

102

0x0066

BE
[0] R [0] R [0] R [0] R [0] R [0] R [0] R [0]

buzzer_duration

[0x00]

buzzer_direct_

access_1

103

0x0067

buzzer_mode

[0x00]

buzzer_tone

[0x00]

These registers are used to provide direct access of the piezo buzzer primarily used to give
acoustic feedback for the touch buttons.

BE:

buzzer enable bit (1 – enabled, 0 – disabled)

buzzer_duration:

0x00 infinite, 0x01 - 0xFF duration in seconds

buzzer_mode:

defines specific alarm sound patterns

mode:

description:

 1s pattern 

0

continuous

1

alarm 1

2

alarm 2

3

alarm 3

4

alarm 4

5

alarm 5

6

alarm 6

7

alarm 7

8

alarm 8

buzzer_tone:

0x00 - 100 Hz, 0xFF - 1375 Hz (step-width = 5 Hz)

Table 14: Buzzer Direct Access

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Register Name

Register
Address

Bit Position

15

14

13

12

11

10 9 8 7 6 5 4 3 2 1 0

direct_value

104

0x0068

[0x0000]

direct_value_config

105

0x0069

EN

[0] R [0] R [0] R [0] R [0] R [0] R [0] R [0] R [0] R [0]

unit

[0x0]

exp

[00]

These registers are used to display specific values instead of display_values or
set_points. For an overview on how to setup the configuration please refer to Figure 6 on
Page 21.

 If disabled, the last viewed value will be visible again as defined with the

user_interface_direct_access register at adderss 101 (Table 13 on Page 26).

direct_value:

16 bit signed integer to be displayed

EN:

direct value enable bit (1 – enabled, 0 – disabled)

unit:

defines a unit symbol to be displayed, following values are possible:

0x0

0x1

0x2

0x3

0x4

0x5

0x6

0x7

0x8

0x9

0xA

0xB

no

unit

°C

°F

cfm

l/s

m³/h

Pa

inWC

V % %RH

ppm

exp:

exponent, defines the number of decimal places:

00 – no decimal point

01 – one decimal place

10 – two decimal places

11 – three deciml places

Table 15: Direct Value

Register Name

Register
Address

Bit Position

15

14

13

12

11

10 9 8 7 6 5 4 3 2 1 0

system_time

112

0x0070

system_time_0

[0x0000]

113

0x0071

system_time_1

[0x0000]

system_time represent a 32 bit timestamp in seconds since JAN-01-1970. The timestamp
is incremented by the L-STAT device but anyway it has to be set by the master at startup
or at defined intervals to prevent time offsets. The timestamp is compatible with the L­INX system time register.

Table 16: System Time

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Register Name

Register
Address

Bit Position

15

14

13

12

11

10 9 8 7 6 5 4 3 2 1 0

modbus_time_

cleared

128

0x0080

modbus_time_cleared_0

[0x0000]

129

0x0081

modbus_time_cleared_1

[0x0000]

modbus_rx_packets

130

0x0082

modbus_rx_packets_0

[0x0000]

131

0x0083

modbus_rx_packets_1

[0x0000]

modbus_rx_bytes

132

0x0084

modbus_rx_bytes_0

[0x0000]

133

0x0085

modbus_rx_bytes_1

[0x0000]

modbus_tx_packets

134

0x0086

modbus_tx_packets_0

[0x0000]

135

0x0087

modbus_tx_packets_1

[0x0000]

modbus_tx_bytes

136

0x0088

modbus_tx_bytes_0

[0x0000]

137

0x0089

modbus_tx_bytes_1

[0x0000]

modbus_timeout_

errors

138

0x008A

modbus_timeout_errors_0

[0x0000]

139

0x008B

modbus_timeout_errors_1

[0x0000]

modbus_checksum_

errors

140

0x008C

modbus_checksum_errors_0

[0x0000]

141

0x008D

modbus_checksum_errors_1

[0x0000]

modbus_time_cleared_0 and modbus_time_cleared_1 represent a 32 bit timestamp in
seconds since JAN-01-1970 that is set by the L-STAT device after the statistics have been
cleared by the master device.

All other values are 32 bit counters incremented by the L-STAT device. These values are
not permanently stored at the L-STAT and will be lost after a reboot.

 The statistics can be cleared by setting the MSC bit at the config_flags register at
address 192 (see Table 22 on Page 33).

Table 17: Modbus Statistics

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3.4.2 Device Settings

The device settings contain data to configure the device and the user interface. This
registers are also accessible through the button interface in EDIT-mode for the system
administrator. The data is stored persistently and will be preserved during power loss.

Register Name

Register
Address

Bit Position

15

14

13

12

11

10 9 8 7 6 5 4 3 2 1 0

modbus_parameter

176

0x00B0

R

[0] R [0]

PAR

[0x2]

modbus_baud

[0x6]

device_addr

[0x01]

This register contains the configuration for the Modbus port of the LSTAT device.

 Compare Table 5 on Page 17 for device settings editable via the user interface.

PAR:

defines the parity bit used for Modbus communication. Valid are:
0x0 – odd (odd parity bit, 1 stop bit)

0x1 – even (even parity bit, 1 stop bit)
0x2 – none (no parity bit, 2 stop bits)

modbus_baud:

defines the Modbus baudrate, following values are valid:
0x0 – 1200

0x1 – 2400
0x2 – 4800
0x3 – 9600
0x4 – 19200
0x5 – 38400
0x6 – 57600
0x7 – 115200

device_addr:

defines the Modbus slave address.
Valid addresses are 1(0x01) to 247 (0xF7).

Table 18: Modbus Parameter

Register Name

Register
Address

Bit Position

15

14

13

12

11

10 9 8 7 6 5 4 3 2 1 0

pincode_system_

administrator

177

0x00B1

R

[0] R [0]

[0x0000]

pincode_end_user

178

0x00B2

R

[0] R [0]

[0x0000]

pincode_system_administrator defines the pincode for the system administrator. If set to
0000 the pincode is disabled. Possible values are 0000 (0x0000) to 9999 (0x270F).

pincode_end_user defines the pincode for the end user. If set to 0000 the pincode is
disabled. Possible values are 0000 (0x0000) to 9999 (0x270F).

 Compare Table 5 on Page 17 for device settings editable via the user interface.

Table 19: Pincodes

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Register Name

Register
Address

Bit Position

15

14

13

12

11

10 9 8 7 6 5 4 3 2 1 0

lcd_color_red

179

0x00B3

reserved

[0x00]

color_brightness

[0x64]

lcd_color_green

180

0x00B4

reserved

[0x00]

color_brightness

[0x64]

lcd_color_blue

181

0x00B5

reserved

[0x00]

color_brightness

[0x64]

lcd_brightness_

contrast

182

0x00B6

lcd_contrast

[0x64]

lcd_brightness

[0x64]

user_interface_

settings

183

0x00B7

DAD
[0x0]

GFV

[1]

AF
[1]

Time

[1]

Date

[0]

TF

[1] R [0] R [0]

lcd_color_scheme

[0x0]

These registers are used to configure basic features of the display and the button interface.

* As long as occupancy is detected the LCD brightness will stay at 100%. After 2 minutes

it will be dimmed to 0%.

 Compare Table 5 on Page 17 for device settings editable via the user interface.

color_brightness:

defines the brightness of a specific backlight color. Values from
0x00 – 0% to 0x64 – 100% are valid.

lcd_brightness:

defines the overall brightness of the LCD backlight. Values from
0x00 – 0% to 0x64 – 100% are valid.

lcd_contrast:

defines the contrast setting of the LCD. Values from 0x00 – 0% to
0x64 – 100% are valid.

lcd_color_scheme:

sets a predefined color setting, possible values are:
0x0 – user (as defined with the above values)

0x1 – white
0x2 – red
0x3 – green
0x4 – blue
0x5 – orange
0x6 – magenta
0x7 – cyan

TF:

time format (0 – 12h, 1 – 24h)

Date:

show date in secondary display (0 – off, 1 – on)

Time:

show time in secondary display (0 – off, 1 – on)

AF:

acoustic feedback for touch buttons (0 – off, 1 – on)

GFV:

goto first value after a defined timeout of 1 minute (0 – off, 1 – on)

DAD:

display auto dim, dim display brightness after 2 minutes to following
defined values:

0x0 – off (disabled)
0x1 – 50% lcd_brightness
0x2 – 10% lcd_brightness
0x3 – 0% lcd_brightness
0x4 – 0% lcd_brightness (depending on occupancy sensor *)

Table 20: User Interface Settings

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Register Name

Register
Address

Bit Position

15

14

13

12

11

10 9 8 7 6 5 4 3 2 1 0

occupancy_sensor_

config

184

0x00B8

EN

[1] R [0] R [0] R [0] R [0] R [0] R [0] R [0]

occupancy_timeout

[0x0A]

With this register the function of occupancy sensor is enabled and controlled.

 Applies only to LSTAT-801-Gx-Lx and LSTAT-802-Gx-Lx.

occupancy_timeout:

defines a timeout in seconds when the state of the occupancy flag
of the present state and short pressed register at address 0 and 1
will be cleared again after motion was detected.
Please see Figure 7 for further information on operation.

EN:

occupancy sensor enabled, only if enabled the occupancy flag of
the present state and short pressed register at address 0 and 1,
Table 7 on Page 22 will be set.

Table 21: Occupancy Sensor Configuration

As depicted in Figure 7 the occupancy flag is set when motion is detected and will be
cleared again after the occupancy_timeout has exceeded as defined at the
occupancy_sensor_configuration register.

Figure 7: Occupancy Sensor Operation

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3.4.3 Configuration Registers

The configuration registers contain data for configuring fundamental functions of the device
as well as configurations for display values and set points. The data is stored persistent and
will be preserved after reboot.

Register Name

Register
Address

Bit Position

15

14

13

12

11

10 9 8 7 6 5 4 3 2 1 0

config_flags

192

0x00C0

R

[0] R [0]

MSC

[0]

IRCP

[0]

DU

[0x1]

MU

[0x1]

VIE

[0]

VOL

[1]

AIE

[0]

AOL

[0]

PESA

[1]

PEEU

[1]

SDE

[0]

RST

[0]

 The display unit system (DU) can also be changed via the user interface in the device

settings (see Table 5 an Page 17). If the value is set to ‘00’ the access of this device
setting via the user interface is prohibited.

 A change in the display unit or sensor unit system will change the configuration

registers for display values at address 256 to 289 and set points at address 320 to 351
to match the selected unit system. Please see Table 28 on Page 39 for display value
configuration and Table 29 on Page 41 for set point configuration.

RST:

reset_device flag, set to ‘1’ the device will reboot

SDE:

secondary_display_direct_access_enabled flag, set to ‘1’ the device displays
the content of the secondary_display_direct_access_string register at address
200 (see Table 23 on Page 34)

PEEU:

pincode_enabled_for_end_user flag, if set to ‘1’ the pincode for the end user
can be edited by the end user

PESA:

pincode_enabled_for_system_administrator flag, if set to ‘1’ the pincode for
the end user and the system administrator can be edited by the system
administrator

AOL:

acoustic_alarm_when_offline flag, if set to ‘1’ a buzzer tone will be generated
while the device is offline

AIE:

acoustic_alarm_on_internal_error flag, if set to ‘1’ a buzzer tone will be
generated if an internal error occured

VOL:

visual_alarm_when_offline flag, if set to ‘1’ the offline text symbol
( ) will be displayed while the device is offline

VIE:

visual_alarm_on_internal_error flag, if set to ‘1’ the alarm symbol ( ) will be
displayed if an internal error occured

MU:

modbus_unit, defines which unit system is used for values on Modbus. The
following values are possible:

0x0 – K
0x1 – °C (SI)
0x2 – °F (US)

DU:

display_unit, defines which unit system is used to display values on the L-STAT.
The following values are possible:

0x0 – access prohibited via the user interface
0x1 – °C (SI)
0x2 – °F (US)

IRCP:

ir_remote_control_pairing flag

MSC:

modbus_statistics_clear flag

Table 22: Configuration Flags

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Register Name

Register
Address

Bit Position

15

14

13

12

11

10 9 8 7 6 5 4 3 2 1 0

secondary_display_

direct_access_string

200

0x00C8

sec_display_direct_access_string

–

207

0x00CF

The string will be displayed with the 4x16 segment digits of the
secondary display.

The string will be updated if the secondary_display_direct_access_enabled flag at the
config_flags register at address 192 (Table 22 at Page 33) is set.

 Up to 16 ASCII character (limited to characters from 0x20 to 0x5F) including a string

terminator (0x00) can be displayed. If a string is longer than 4 characters the
secondary display will work as a ticker.

Table 23: Secondary Display Direct Access String

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Register Name

Register
Address

Bit Position

15

14

13

12

11

10 9 8 7 6 5 4 3 2 1 0

config_touch_

button_0

208

0x00D0

DA

[1]

ED

[0]

EU

[1]

DAD

[0]

DAU

[1]

MF

[0] R [0]

EN

[1]

set_point_index

[0x00]

config_touch_

button_1

209

0x00D1

DA

[1]

ED

[0]

EU

[1]

DAD

[0]

DAU

[1]

MF

[0] R [0]

EN

[1]

set_point_index

[0x01]

config_touch_

button_2

210

0x00D2

DA

[0]

ED

[0]

EU

[0]

DAD

[0]

DAU

[0]

MF

[0] R [0]

EN

[1]

set_point_index

[0x00]

config_touch_

button_3

211

0x00D3

DA

[0]

ED

[0]

EU

[0]

DAD

[0]

DAU

[0]

MF

[1] R [0]

EN

[1]

set_point_index

[0x00]

config_touch_

button_4

212

0x00D4

DA

[1]

ED

[1]

EU

[0]

DAD

[1]

DAU

[0]

MF

[0] R [0]

EN

[1]

set_point_index

[0x00]

config_touch_

button_5

213

0x00D5

DA

[1]

ED

[1]

EU

[0]

DAD

[1]

DAU

[0]

MF

[0] R [0]

EN

[1]

set_point_index

[0x01]

config_touch_

button_6

214

0x00D6

DA

[0]

ED

[0]

EU

[0]

DAD

[0]

DAU

[0]

MF

[0] R [0]

EN

[1]

set_point_index

[0x00]

config_touch_

button_7

215

0x00D7

DA

[0]

ED

[0]

EU

[0]

DAD

[0]

DAU

[0]

MF

[0] R [0]

EN

[1]

set_point_index

[0x00]

With these registers the functionality of the touch buttons is defined.

 See Table 26 on Page 37 for example configurations.

set_point_index:

defines a set point register that can be edited in DIRECT_ACCESS­mode if the DA bit is set

EN:

if set to ‘1’ the defined button is enabled and its state will be updated
in the present state, short pressed and long pressed register at Table 7
on Page 22

MF:

if set to ‘1’ the button is defined as MENU-button

DAU:

if set to ‘1’ the button is defined as UP-button
in DIRECT_ACCESS-mode

DAD:

if set to ‘1’ the button is defined as DOWN-button in
DIRECT_ACCESS-mode

EU:

if set to ‘1’ the button is defined as UP-button in EDIT-mode

ED:

if set to ‘1’ the button is defined as DOWN-button in EDIT-mode

DA:

if set to ‘1’ and the button gets pressed a set point defined by the
set_point_index will be displayed in DIRECT_ACCESS-mode

Table 24: Touch Button Configuration

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Register Name

Register
Address

Bit Position

15

14

13

12

11

10 9 8 7 6 5 4 3 2 1 0

config_external_

button_0

224

0x00E0

DA

[0]

ED

[0]

EU

[0]

DAD

[0]

DAU

[0]

MF

[0] R [0]

EN

[1]

set_point_index

[0x00]

config_external_

button_1

225

0x00E1

DA

[0]

ED

[0]

EU

[0]

DAD

[0]

DAU

[0]

MF

[0] R [0]

EN

[1]

set_point_index

[0x00]

config_external_

button_2

226

0x00E2

DA

[0]

ED

[0]

EU

[0]

DAD

[0]

DAU

[0]

MF

[0] R [0]

EN

[1]

set_point_index

[0x00]

config_external_

button_3

227

0x00E3

DA

[0]

ED

[0]

EU

[0]

DAD

[0]

DAU

[0]

MF

[0] R [0]

EN

[1]

set_point_index

[0x00]

With these registers the functionality of the external buttons is defined.

 See Table 26 on Page 37 for example configurations.

set_point_index:

defines a set point register that can be edited in DIRECT_ACCESS­mode if the DA bit is set

EN:

if set to ‘1’ the defined button is enabled and its state will be updated
in the present state, short pressed and long pressed register at Table 7
on Page 22

MF:

if set to ‘1’ the button is defined as MENU-button

DAU:

if set to ‘1’ the button is defined as UP-button
in DIRECT_ACCESS-mode

DAD:

if set to ‘1’ the button is defined as DOWN-button in
DIRECT_ACCESS-mode

EU:

if set to ‘1’ the button is defined as UP-button in EDIT-mode

ED:

if set to ‘1’ the button is defined as DOWN-button in EDIT-mode

DA:

if set to ‘1’ and the button gets pressed a set point defined by the
set_point_index will be displayed in DIRECT_ACCESS-mode

Table 25: External Button Configuration

L-STAT User Manual 37 LOYTEC

Version 1.0 LOYTEC electronics GmbH

Description

Bit Position

15

14

13

12

11

10 9 8 7 6 5 4 3 2 1 0

no special function

0 0 0 0 0 0 0

1

0



The button is enabled but has no special function (e.g. OCCUPANCY-button). The set
point index has no influence in this case.

MENU-button

0 0 0 0 0 1 0

1

0



This combination can be used to determine the MENU-button. The set point index has no
influence in this case.

UP-button

0 0 1 0 1 0 0

1

0



This button will increment a set point in EDIT- or DIRECT_ACCESS-mode when
pressed. The set point index has no influence in this case.

DOWN-button with

direct access

1 1 0 1 0 0 0

1

0



This button will decrement a set point in EDIT- or DIRECT_ACCESS-mode when
pressed. Additionally a setpoint defined with the set_point_index is displayed when
pressed and can be edited in DIRECT_ACCESS-mode.

Table 26: Button Example Configuration

Description

Register
Address

Bit Position

15

14

13

12

11

10 9 8 7 6 5 4 3 2 1 0

Configuration

Bar-Graph Left

240

0x00F0

R

[0] R [0] R [0] R [0] R [0] R [0] R [0]

EN

[0]

set_point_index

[0x00]

Configuration

Bar-Graph Right

241

0x00F1

R

[0] R [0] R [0] R [0] R [0] R [0] R [0]

EN

[1]

set_point_index

[0x01]

These registers are used to associate a set point as source for the bar graph on the left and
on the right side of the LCD. If enabled the bar graph is updated corresponding to the
value of the set point defined with the set_point_index.
The bar graph segments can also be set manually by writing the symbol_direct_access
registers at address 99 and 100 (Table 12 on Page 26).

set_point_index:

defines a set point register that is used as source for the bar graph

EN:

if set to ‘1’ the corresponding bar-graph will be updated to visualize
the value of a set point with the defined set_point_index

Table 27: Bar Graph Configuration

L-STAT User Manual 38 LOYTEC

Version 1.0 LOYTEC electronics GmbH

Description

Register
Address

Bit Position

15

14

13

12

11

10 9 8 7 6 5 4 3 2 1 0

config_display_

value_0

256

0x0100

unit_modbus

[0x1]

unit_lstat

[0x1]

CAL

[1]

semantic_meaning

[0x01]

257

0x0101

VSA

[1]

VEU

[1]

DSSA

[1]

[1]

[0]

[0] [0]

[0] [0] [0]

[0]

[0] [0] [0] [1] [0]

config_display_

value_1

258

0x0102

unit_modbus

[0xA]

unit_lstat

[0xA]

CAL

[1]

semantic_meaning

[0x04]

259

0x0103

VSA

[1]

VEU

[1]

DSSA

[1]

[1]

[0]

[0] [0]

[0] [1] [0]

[0]

[0] [0] [0] [0] [0]

config_display_

value_2

260

0x0104

unit_modbus

[0x1]

unit_lstat

[0x1]

CAL

[1]

semantic_meaning

[0x05]

261

0x0105

VSA

[1]

VEU

[1]

DSSA

[1]

[1]

[0]

[0] [0]

[0] [1] [0]

[0]

[0] [0] [0] [1] [0]

config_display_

value_3 *

262

0x0106

unit_modbus

[0xB]

unit_lstat

[0xB]

CAL

[1]

semantic_meaning

[0x07]

263

0x0107

VSA

[1]

VEU

[1]

DSSA

[1]

[1]

[0]

[0] [0]

[0] [0] [0]

[0]

[0] [0] [0] [0] [0]

config_display_

value_4

264

0x0108

unit_modbus

[0x8]

unit_lstat

[0x8]

CAL

[1]

semantic_meaning

[0x0E]

265

0x0109

VSA

[1]

VEU

[1]

DSSA

[1]

[1]

[0]

[0] [0]

[0] [0] [0]

[0]

[0] [0] [0] [0] [0]

config_display_

value_5

266

0x010A

unit_modbus

[0x1]

unit_lstat

[0x1]

CAL

[1]

semantic_meaning

[0x03]

267

0x010B

VSA

[1]

VEU

[1]

DSSA

[1]

[1]

[0]

[0] [0]

[0] [0] [0]

[0]

[0] [0] [1] [0] [0]

config_display_

value_6

268

0x010C

unit_modbus

[0x0]

unit_lstat

[0x0]

CAL

[0]

semantic_meaning

[0x00]

269

0x010D

VSA

[0]

VEU

[0]

DSSA

[0]

[0]

[0]

[0] [0]

[0] [0] [0]

[0]

[0] [0] [0] [0] [0]

config_display_

value_7

270

0x010E

unit_modbus

[0x0]

unit_lstat

[0x0]

CAL

[0]

semantic_meaning

[0x00]

271

0x010F

VSA

[0]

VEU

[0]

DSSA

[0]

[0]

[0]

[0] [0]

[0] [0] [0]

[0]

[0] [0] [0] [0] [0]

config_display_

value_8

272

0x0110

unit_modbus

[0x0]

unit_lstat

[0x0]

CAL

[0]

semantic_meaning

[0x00]

273

0x0111

VSA

[0]

VEU

[0]

DSSA

[0]

[0]

[0]

[0] [0]

[0] [0] [0]

[0]

[0] [0] [0] [0] [0]

config_display_

value_9

274

0x0112

unit_modbus

[0x0]

unit_lstat

[0x0]

CAL

[0]

semantic_meaning

[0x00]

275

0x0113

VSA

[0]

VEU

[0]

DSSA

[0]

[0]

[0]

[0] [0]

[0] [0] [0]

[0]

[0] [0] [0] [0] [0]

config_display_

value_10

276

0x0114

unit_modbus

[0x0]

unit_lstat

[0x0]

CAL

[0]

semantic_meaning

[0x00]

277

0x0115

VSA

[0]

VEU

[0]

DSSA

[0]

[0]

[0]

[0] [0]

[0] [0] [0]

[0]

[0] [0] [0] [0] [0]

config_display_

value_11

278

0x0116

unit_modbus

[0x0]

unit_lstat

[0x0]

CAL

[0]

semantic_meaning

[0x00]

279

0x0117

VSA

[0]

VEU

[0]

DSSA

[0]

[0]

[0]

[0] [0]

[0] [0] [0]

[0]

[0] [0] [0] [0] [0]

config_display_

value_12

280

0x0118

unit_modbus

[0x0]

unit_lstat

[0x0]

CAL

[0]

semantic_meaning

[0x00]

281

0x0119

VSA

[0]

VEU

[0]

DSSA

[0]

[0]

[0]

[0] [0]

[0] [0] [0]

[0]

[0] [0] [0] [0] [0]

config_display_

value_13

282

0x011A

unit_modbus

[0x0]

unit_lstat

[0x0]

CAL

[0]

semantic_meaning

[0x00]

L-STAT User Manual 39 LOYTEC

Version 1.0 LOYTEC electronics GmbH

Description

Register
Address

Bit Position

283

0x011B

VSA

[0]

VEU

[0]

DSSA

[0]

[0]

[0]

[0] [0]

[0] [0] [0]

[0]

[0] [0] [0] [0] [0]

config_display_

value_14

284

0x011C

unit_modbus

[0x0]

unit_lstat

[0x0]

CAL

[0]

semantic_meaning

[0x00]

285

0x011D

VSA

[0]

VEU

[0]

DSSA

[0]

[0]

[0]

[0] [0]

[0] [0] [0]

[0]

[0] [0] [0] [0] [0]

config_display_

value_15

286

0x011E

unit_modbus

[0x0]

unit_lstat

[0x0]

CAL

[0]

semantic_meaning

[0x00]

287

0x011F

VSA

[0]

VEU

[0]

DSSA

[0]

[0]

[0]

[0] [0]

[0] [0] [0]

[0]

[0] [0] [0] [0] [0]

These registers hold the configuration of the 16 display values.

 For both, unit_lstat and unit_modbus the following values are possible:

0x0

0x1

0x2

0x3

0x4

0x5

0x6

0x7

0x8

0x9

0xA

0xB

no

unit

°C

°F

cfm

l/s

m³/h

Pa

inWC V %

%RH

ppm

Bits 0-11 of the higher address of each configuration register indicate the symbols that are
displayed along with the corresponding display value.

These two bits define if the value displayed is taken from a display_value register at address
64 to 79 (see Table 11 on Page 25) or from a sensor_value register at address 48 to 56 (see
Table 10 on Page 24). The following states are valid:

0 – defines that the value is taken from a display_value register that has to be set via

modbus

1 – defines that the value is taken from a sensor_value (+ offset_value) register that is

automatically updated with the current sensor value

VEU:

visible for end user

VSA:

Visible for system administrator

These two bits define if the display value is visible for the end user and/or the system
administrator. If set to ‘1’ the value will be visible.

 See Table 31 on Page 43 for example configurations of display values or set points.
* Please note that config_display_value_3 register is only configured as above per default

for LSTAT-802-Gx-Lx devices for displaying the actual CO2 level. Otherwise all bits of
this register are set to ‘0’.

semantic_meaning:

is used to provide information about the semantic meaning and the
source of the value. For further information please see Table 30 on
Page 42.

CAL:

if set to ‘1’ the corresponding offset_value can be edited in
CALIBRATION-mode (only capable if DSEU or DSSA is set to
‘1’)

unit_lstat:

defines a unit with which the corresponding display value appears
on the LCD

unit_modbus:

defines a unit that the corresponding display value register appeare
on Modbus

DSEU:

display source for end user

DSSA:

diplay source for system administrator

Table 28: Display Value Configuration

L-STAT User Manual 40 LOYTEC

Version 1.0 LOYTEC electronics GmbH

Description

Register
Address

Bit Position

15

14

13

12

11

10 9 8 7 6 5 4 3 2 1 0

config_set_

point_0

320

0x0140

unit_modbus

[0x1]

unit_lstat

[0x1]

PIN

[0]

semantic_meaning

[0x01]

321

0x0141

VSA

[1]

VEU

[1]

ESA

[1]

EEU

[1]

[0]

[0] [0]

[0] [0] [0]

[0]

[0] [0] [0] [1] [1]

config_set_

point _1

322

0x0142

unit_modbus

[0x0]

unit_lstat

[0x0]

PIN

[0]

semantic_meaning

[0x0B]

323

0x0143

VSA

[1]

VEU

[1]

ESA

[1]

EEU

[1]

[0]

[0] [0]

[0] [0] [0]

[1]

[0] [0] [0] [0] [0]

config_set_

point _2

324

0x0144

unit_modbus

[0x0]

unit_lstat

[0x0]

PIN

[0]

semantic_meaning

[0x00]

325

0x0145

VSA

[0]

VEU

[0]

ESA

[0]

EEU

[0]

[0]

[0] [0]

[0] [0] [0]

[0]

[0] [0] [0] [0] [0]

config_set_

point _3

326

0x0146

unit_modbus

[0x0]

unit_lstat

[0x0]

PIN

[0]

semantic_meaning

[0x00]

327

0x0147

VSA

[0]

VEU

[0]

ESA

[0]

EEU

[0]

[0]

[0] [0]

[0] [0] [0]

[0]

[0] [0] [0] [0] [0]

config_set_

point _4

328

0x0148

unit_modbus

[0x0]

unit_lstat

[0x0]

PIN

[0]

semantic_meaning

[0x00]

329

0x0149

VSA

[0]

VEU

[0]

ESA

[0]

EEU

[0]

[0]

[0] [0]

[0] [0] [0]

[0]

[0] [0] [0] [0] [0]

config_set_

point _5

330

0x014A

unit_modbus

[0x0]

unit_lstat

[0x0]

PIN

[0]

semantic_meaning

[0x00]

331

0x014B

VSA

[0]

VEU

[0]

ESA

[0]

EEU

[0]

[0]

[0] [0]

[0] [0] [0]

[0]

[0] [0] [0] [0] [0]

config_set_

point _6

332

0x014C

unit_modbus

[0x0]

unit_lstat

[0x0]

PIN

[0]

semantic_meaning

[0x00]

333

0x014D

VSA

[0]

VEU

[0]

ESA

[0]

EEU

[0]

[0]

[0] [0]

[0] [0] [0]

[0]

[0] [0] [0] [0] [0]

config_set_

point _7

334

0x014E

unit_modbus

[0x0]

unit_lstat

[0x0]

PIN

[0]

semantic_meaning

[0x00]

335

0x014F

VSA

[0]

VEU

[0]

ESA

[0]

EEU

[0]

[0]

[0] [0]

[0] [0] [0]

[0]

[0] [0] [0] [0] [0]

config_set_

point _8

336

0x0150

unit_modbus

[0x0]

unit_lstat

[0x0]

PIN

[0]

semantic_meaning

[0x00]

337

0x0151

VSA

[0]

VEU

[0]

ESA

[0]

EEU

[0]

[0]

[0] [0]

[0] [0] [0]

[0]

[0] [0] [0] [0] [0]

config_set_

point _9

338

0x0152

unit_modbus

[0x0]

unit_lstat

[0x0]

PIN

[0]

semantic_meaning

[0x00]

339

0x0153

VSA

[0]

VEU

[0]

ESA

[0]

EEU

[0]

[0]

[0] [0]

[0] [0] [0]

[0]

[0] [0] [0] [0] [0]

config_set_

point _10

340

0x0154

unit_modbus

[0x0]

unit_lstat

[0x0]

PIN

[0]

semantic_meaning

[0x00]

341

0x0155

VSA

[0]

VEU

[0]

ESA

[0]

EEU

[0]

[0]

[0] [0]

[0] [0] [0]

[0]

[0] [0] [0] [0] [0]

config_set_

point _11

342

0x0156

unit_modbus

[0x0]

unit_lstat

[0x0]

PIN

[0]

semantic_meaning

[0x00]

343

0x0157

VSA

[0]

VEU

[0]

ESA

[0]

EEU

[0]

[0]

[0] [0]

[0] [0] [0]

[0]

[0] [0] [0] [0] [0]

config_set_

point _12

344

0x0158

unit_modbus

[0x0]

unit_lstat

[0x0]

PIN

[0]

semantic_meaning

[0x00]

345

0x0159

VSA

[0]

VEU

[0]

ESA

[0]

EEU

[0]

[0]

[0] [0]

[0] [0] [0]

[0]

[0] [0] [0] [0] [0]

L-STAT User Manual 41 LOYTEC

Version 1.0 LOYTEC electronics GmbH

Description

Register
Address

Bit Position

config_set_

point _13

346

0x015A

unit_modbus

[0x0]

unit_lstat

[0x0]

PIN

[0]

semantic_meaning

[0x00]

347

0x015B

VSA

[0]

VEU

[0]

ESA

[0]

EEU

[0]

[0]

[0] [0]

[0] [0] [0]

[0]

[0] [0] [0] [0] [0]

config_set_

point _14

348

0x015C

unit_modbus

[0x0]

unit_lstat

[0x0]

PIN

[0]

semantic_meaning

[0x00]

349

0x015D

VSA

[0]

VEU

[0]

ESA

[0]

EEU

[0]

[0]

[0] [0]

[0] [0] [0]

[0]

[0] [0] [0] [0] [0]

config_set_

point _15

350

0x015E

unit_modbus

[0x0]

unit_lstat

[0x0]

PIN

[0]

semantic_meaning

[0x00]

351

0x015F

VSA

[0]

VEU

[0]

ESA

[0]

EEU

[0]

[0]

[0] [0]

[0] [0] [0]

[0]

[0] [0] [0] [0] [0]

These registers hold the configuration for the 16 set point.

 For both, unit_lstat and unit_modbus the following values are possible:

0x0

0x1

0x2

0x3

0x4

0x5

0x6

0x7

0x8

0x9

0xA

0xB

no

unit

°C

°F

cfm

l/s

m³/h

Pa

inWC V %

%RH

ppm

Bits 0-11 of the higher address of each configuration register indicate the symbols that are
displayed along with the corresponding display value.

These two bits define if the set point is editable for the end user and/or the system
administrator. The following states are valid:

0 – defines that the set point is not editable

1 – defines that the set point is editable

VEU:

visible for end user

VSA:

Visible for system administrator

These two bits define if the set point is visible for the end user and/or the system administrator.
If set to ‘1’ the set point will be visible.

 See Table 31 on Page 43 for example configurations of display values or set points.

semantic_meaning:

is used to provide information about the semantic meaning of the set
point. For further information please see Table 30 on Page 42.

PIN:

if set to ‘1’ the the corresponding set point is pincode protected
and can only be changed in EDIT-mode if the correct pincode has
been entered before.

unit_lstat:

defines a unit with which the corresponding set point appears on
the LCD

unit_modbus:

defines a unit that the corresponding set point register appears on
Modbus

EEU:

display source for end user

ESA:

diplay source for system administrator

Table 29: Set Point Configuration

L-STAT User Manual 42 LOYTEC

Version 1.0 LOYTEC electronics GmbH

Table 30 below shows possible values for the semantic meaning used in the configuration
for display values (Table 28 on Page 39) and set points (Table 29 on Page 41).
Primarily the semantic meaning field defines a text that is displayed along with a display
value or a set point. Additionally for display values it defines the internal sensor_value that
is displayed when the DSEU or DSSA bit is set. For examples on how to use the semantic
meaning field in the configuratiuon registers please see Table 31 at Page 43 for example
configurations.

Semantic Meaning Value

Description

Secondary Display Text

0x00

None (unconfigured)

0x01

Internal Temperature abs.

R O O M

0x02

Internal Temperature rel.

∆ S P T

0x03

External Temperature

O U T

0x04

Relative Humidity

H U M

0x05

Dew Point

D E W

0x06

Luminance (lx)

L U X

0x07

Amount CO2

C O 2

0x08

Differential Pressure

P R E S

0x09

Flow

F L O W

0x0A

Valve Position

V A L V

0x0B

Fan Stage

F A N

0x0C

Heat/Cool Stage

H & C

0x0D

Brightness (%)

B R %

0x0E

Supply Voltage

2 4 V

0x0F

CPU voltage

C P U

0x10

CPU temperature

C P U

0x11

Room ID

R O O M

0x12

Damper Position (%)

D A M P

0x13

Reheat (%)

H E A T

0x14

Discharge Temperature

D I S

Table 30: Semantic Meaning

L-STAT User Manual 43 LOYTEC

Version 1.0 LOYTEC electronics GmbH

Description

Bit Position

15

14

13

12

11

10 9 8 7 6 5 4 3 2 1 0

config_display_value_x

internal temperature

(from built in sensor)

0x1

0x1 1 0x01

1 1 1 1 0 0 0 0 0 0 0 0 0 0 1

0



The value of the built in temperature sensor will be displayed with the internal
temperature symbol in °C. It will be visible for the end user and system
administrator. See the following example for how the display would look like:

config_display_value_x

relative humidity

(value supplied over Modbus)

0xA

0xA 0 0x04

1 1 0 0 0 0 0 0 1 0 0 0 0 0 0

0



This is an example of a relative humidity display value. Because the DSEU
and DSSA bit is set to ‘0’ the content of the corresponding
display_value_register will be displayed. It will be visible for the end user and
system administrator. See the following example for how the display would
look like:

config_set_point_x

relative temperature

0x1

0x1 1 0x02

1 1 1 1 0 0 0 0 0 0 0 0 0 0 1

1



This is an example of a relative temperature set point in °C. The internal
temperature symbol as well as the arrow symbol will be displayed. Since the
set point is pincode protected also the key symbol will be displayed. See the
following example for how the display would look like:

Table 31: Display Value and Set Point Example Configuration

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Register Name

Register
Address

Bit Position

15

14

13

12

11

10 9 8 7 6 5 4 3 2 1 0

set_point_0

384

0x0180

[0x00DC]

set_point_1

385

0x0181

[0x0000]

set_point_2

386

0x0182

[0x0000]

set_point_3

387

0x0183

[0x0000]

set_point_4

388

0x0184

[0x0000]

set_point_5

389

0x0185

[0x0000]

set_point_6

390

0x0186

[0x0000]

set_point_7

391

0x0187

[0x0000]

set_point_8

392

0x0188

[0x0000]

set_point_9

393

0x0189

[0x0000]

set_point_10

394

0x018A

[0x0000]

set_point_11

395

0x018B

[0x0000]

set_point_12

396

0x018C

[0x0000]

set_point_13

397

0x018D

[0x0000]

set_point_14

398

0x018E

[0x0000]

set_point_15

399

0x018F

[0x0000]

These registers contain the values of up to 16 set points.

All registers are 16 Bit signed values. Depending on the tepwi_unit specified with the
corresponding set point configuration register at address 320 to 351 (Table 29 at Page 41)
the value needs to be scaled as described in Table 39 at Page 51 to achieve the desired
result.

Table 32: Set Points

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Register Name

Register
Address

Bit Position

15

14

13

12

11

10 9 8 7 6 5 4 3 2 1 0

set_point_max_0

416

0x01A0

[0x012C]

set_point_max_1

417

0x01A1

[0x0003]

set_point_max_2

418

0x01A2

[0x0000]

set_point_max_3

419

0x01A3

[0x0000]

set_point_max_4

420

0x01A4

[0x0000]

set_point_max_5

421

0x01A5

[0x0000]

set_point_max_6

422

0x01A6

[0x0000]

set_point_max_7

423

0x01A7

[0x0000]

set_point_max_8

424

0x01A8

[0x0000]

set_point_max_9

425

0x01A9

[0x0000]

set_point_max_10

426

0x01AA

[0x0000]

set_point_max_11

427

0x01AB

[0x0000]

set_point_max_12

428

0x01AC

[0x0000]

set_point_max_13

429

0x01AD

[0x0000]

set_point_max_14

430

0x01AE

[0x0000]

set_point_max_15

431

0x01AF

[0x0000]

These registers are used to allow set point changes for the end user or system
administrator only within limits defined with a set_point_max value of this Table and a
set_point_min value of Table 34.

All registers are 16 Bit signed values. Depending on the tepwi_unit specified with the
corresponding set point configuration register at address 320 to 351 (Table 29 at Page 41)
the value needs to be scaled as described in Table 39 at Page 51 to achieve the desired
result.

Table 33: Set Point max. Values

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Register Name

Register
Address

Bit Position

15

14

13

12

11

10 9 8 7 6 5 4 3 2 1 0

set_point_min_0

448

0x01C0

[0x0096]

set_point_min_1

449

0x01C1

[0x0000]

set_point_min_2

450

0x01C2

[0x0000]

set_point_min_3

451

0x01C3

[0x0000]

set_point_min_4

452

0x01C4

[0x0000]

set_point_min_5

453

0x01C5

[0x0000]

set_point_min_6

454

0x01C6

[0x0000]

set_point_min_7

455

0x01C7

[0x0000]

set_point_min_8

456

0x01C8

[0x0000]

set_point_min_9

457

0x01C9

[0x0000]

set_point_min_10

458

0x01CA

[0x0000]

set_point_min_11

459

0x01CB

[0x0000]

set_point_min_12

460

0x01CC

[0x0000]

set_point_min_13

461

0x01CD

[0x0000]

set_point_min_14

462

0x01CE

[0x0000]

set_point_min_15

463

0x01CF

[0x0000]

These registers are used to allow set point changes for the end user or system
administrator only within limits defined with a set_point_max value of Table 33 and a
set_point_min value of this Table.

All registers are 16 Bit signed values. Depending on the tepwi_unit specified with the
corresponding set point configuration register at address 320 to 351 (Table 29 at Page 41)
the value needs to be scaled as described in Table 39 at Page 51 to achieve the desired
result.

Table 34: Set Point min. Values

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Register Name

Register
Address

Bit Position

15

14

13

12

11

10 9 8 7 6 5 4 3 2 1 0

offset_value_0

480

0x01E0

[0x0000]

offset_value_1

481

0x01E1

[0x0000]

offset_value_2

482

0x01E2

[0x0000]

offset_value_3

483

0x01E3

[0x0000]

offset_value_4

484

0x01E4

[0x0000]

offset_value_5

485

0x01E5

[0x0000]

offset_value_6

486

0x01E6

[0x0000]

offset_value_7

487

0x01E7

[0x0000]

offset_value_8

488

0x01E8

[0x0000]

offset_value_9

489

0x01E9

[0x0000]

offset_value_10

490

0x01EA

[0x0000]

offset_value_11

491

0x01EB

[0x0000]

offset_value_12

492

0x01EC

[0x0000]

offset_value_13

493

0x01ED

[0x0000]

offset_value_14

494

0x01EE

[0x0000]

offset_value_15

495

0x01EF

[0x0000]

These registers are used to define offsets for display values when displaying a value from
a built in sensor. These registers can either be written via Modbus or can be edited in
CALIBRATION-mode by the system administrator.

All registers are 16 Bit signed values. Depending on the tepwi_unit specified with the
corresponding display value configuration register at address 256 to 287 (Table 28 at
Page 39) the value needs to be scaled the same as the corresponding display value as
described in Table 39 at Page 51.

Table 35: Offset Values

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3.4.4 Model Information Registers (read only)

These registers are set at production time and contain specific information about the specific
model and the default button print layout.

Description

Register
Address

Bit Position

15

14

13

12

11

10 9 8 7 6 5 4 3 2 1 0

Button Print Layout

L1

L2

L3

L4

L5

L6

default_print_

touch_button_0

528

0x0210

[0x0004]

[0x0004]

[0x0004]

[0x0004]

[0x0004]

[0x0004]

default_print_

touch_button_1

529

0x0211

[0x0000]

[0x0006]

[0x0006]

[0x000A]

[0x0006]

[0x0006]

default_print_

touch_button_2

530

0x0212

[0x0000]

[0x0000]

[0x0008]

[0x0008]

[0x000A]

[0x000A]

default_print_

touch_button_3

531

0x0213

[0x0001]

[0x0001]

[0x0001]

[0x0001]

[0x0001]

[0x0001]

default_print_

touch_button_4

532

0x0214

[0x0005]

[0x0005]

[0x0005]

[0x0005]

[0x0005]

[0x0005]

default_print_

touch_button_5

533

0x0215

[0x0000]

[0x0007]

[0x0007]

[0x000B]

[0x0007]

[0x0007]

default_print_

touch_button_6

534

0x0216

[0x0000]

[0x0000]

[0x0009]

[0x0009]

[0x000B]

[0x000B]

default_print_

touch_button_7

535

0x0217

[0x0002]

[0x0002]

[0x0002]

[0x0002]

[0x0002]

[0x0008]

default_print_

external_button_0

536

0x0218

[0x0000]

default_print_

external_button_1

537

0x0219

[0x0000]

default_print_

external_button_2

538

0x021A

[0x0000]

default_print_

external_button_3

539

0x021B

[0x0000]

assembly_matrix – defines the components that can be used:

0 – component not installed

1 – component installed

Button Print Layout – describes which symbols are printed on the front panel and on the

external buttons by default. The following symbols are defined:
0x0000 – none
0x0001 – menu
0x0002 – occupancy
0x0003 – reserved
0x0004 – temp_up
0x0005 – temp_down

0x0006 – fan_up
0x0007 – fan_down
0x0008 – light_on
0x0009 – light_off
0x000A – blinds_up
0x000B – blinds_down

Table 36: Model Information Registers

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3.4.5 Device Information Registers (read only)

The registers shown in Table 37 are set at production and contain specific information about
the device.

Description

Register
Address

Bit Position

15

14

13

12

11

10 9 8 7 6 5 4 3 2 1 0

product_code_string

560

0x0230

product_code_string

–

569

0x0239

serial_number_

string

576

0x0240

serial_number_string

–

585

0x0249

firmware_version_

string

592

0x0250

firmware_version_string

–

595

0x0253

firmware_date
596

0x0254

firmware_date_0

597

0x0255

firmware_date_1

bootloader_version_

string

608

0x0260

bootloader_version_string

–

611

0x0263

bootloader_date

612

0x0264

bootloader_date_0

613

0x0265

bootloader_date_1

 firmware_date_0 and firmware_date_1 as well as bootloader_date_0 and

bootloader_date_1 represent a 32 bit timestamp in seconds since JAN-01-1970

indicating the build time.

Table 37: Device Information Registers

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3.4.6 NFC Registers

These registers provide an URL that can be accessed by NFC enabled devices such as smart
phones to get additional information and control of the room automation.

Description

Register
Address

Bit Position

15

14

13

12

11

10 9 8 7 6 5 4 3 2 1 0

url_string

1024

0x0400

[http://www.loytec.com]

–

1148

0x047C

 Up to 248 ASCII character including a string terminator (0x00) can be used. The string

will be converted to a NDEF URI record that is saved on the NFC tag. For further
information on the NFC interface see Chapter 4.

Table 38: NFC Registers

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3.4.7 Value Scaling and Stepwidth

The following table gives an overview of how raw Modbus register values are scaled and
which stepwidth is defined for set points.

Physical Value

Unit

Modbus Scaling

A*10^B*(raw + C)

Set Point Stepwidth

Example

A B C

raw value

Display value

No Unit

-

1 0 0 1 100

100.0

Temperature

(K)

1

-1

-2740

0,5

2975

023.5

°C

°C

1

-1 0 0,5

235

023.5

°C

°F

1

-1 0 1,0

743

074.3

°F

Flow

m³/h

1 0 0 1 150

150.0

m³/h

l/s

1

-1 0 0,1

417

041.7

l/s

cfm

1 0 0 1 88

088.0

cfm

Pressure

Pa

1 0 0 1 200

200.0 Pa

inWC

1

-3 0 0,01

803

0.803

inWC

Voltage

V

1

-1 0 0,1

240

024.0 V

Percentage

%

5

-3 0 1

9000

045.0

%

Humidity

%RH

5

-3 0 1

9000

045.0

%RH

Amount CO2

ppm

1 0 0 1 550

550.0

ppm

Note that though a display value or a set point would accept values from 0 to 65535 if
unsigned or -32768 to 32767 if signed the value that is displayed is limited to a range from

-999 to 9999 because of the 4 digit display.

 When a fixed-point number reaches a certain limit where an overflow occurs the

decimal point is shifted rightwards (e.g. 999.9 → 1000).

 Whole number values are preferably displayed with the bigger digits. If an overflow

occurs the number is shifted rightwards (e.g. 999 → 1000).

Table 39: Value Scaling and Stepwidth

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4 NFC

4.1 General Description

The NFC interface of the L-STAT device can be used to get additional information and
configuration options for room automation. The L-STAT will behave like an NFC tag that
can be read by an NFC enabled device. The antenna is located behind the LCD and best
performance is achieved by putting the NFC enabled device right on the front panel glass.
Depending on where the antenna of the mobile device is located the optimal position will be
found by moving the device slowly over the front panel. Best performance can be achieved
by positioning the device in a more or less horizontal position covering the LCD as shown
in Figure 8.

Figure 8: NFC Device Positioning

If the connection is established the NFC field detection bit at the short_pressed Modbus
register at address 1 (Table 7 at Page 22) will be set. In the meantime the NFC enabled
device will read the memory of the tag and will perform an appropriate action. Since a
NDEF URI record is saved at the tags memory (Table 38 at Page 50) the device will ask to
open the defined URL in the browser of the NFC enabled device.

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4.2 Copy the L-WEB Project URL to the NFC Tag Memory

To show an L-WEB project on your mobile device by NFC, simply copy and paste the URL
of the L-Web project to the url_string of Table 38. Note that the mobile device needs
network or internet access to open the URL. Please follow the instructions below.

To Copy a L-WEB Project URL to the NFC Tag Memory

1. Open the web interface of your device

2. Select Project List from the L-WEB menu.

3. Open the desired project in the web browser as shown in Figure 9.

Figure 9: L-WEB Project List

4. Simply copy the URL of the desired project from the browsers address bar and go to

the Modbus Datapoints of the L-STAT device.

5. Open the nfc_string datapoint in the web interface of your device and paste the

L-WEB project URL at the Value field as shown in Figure 10.

6. Click on the Set button to save the string.

Figure 10: L-STAT NFC String

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5 IR-Remote Control Operation

5.1 General Description

The IR receiver is located behind the front panel glass above the LCD. The L-STAT device
implements the NEC IR protocol compatible with the Apple remote control as displayed in
Figure 11.

Figure 11: Apple Remote Control

Whenever a command gets received the IRC bit at the short_pressed Modbus register at
address 1 (Table 7 at Page 22) is set. The received button code as well as the remote ID can
be read from the ir_remote_control_command register at address 32 (Table 9 at Page 24).

Button Number

Description

Button Code

1

Center

46 2 Up 5 3

Left 4 4

Right 3 5

Down 6 6

Menu

1

7

Play/Pause

47

Table 40: Apple Remote Button Codes

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5.2 Remote Control Pairing

Each remote control has an ID that is transmitted along with the button code. This ID can be
used to pair a certain remote control with a certain L-STAT device. The ID of the Apple
remote control can be changed by pressing Menu and Center button for at least 6s. This will
increment the ID by one.

The ID of your remote control can be checked by pressing any button and watching the
ir_remote_control_command register in the Web interface as shown in Figure 12 below.
This example shows that the Menu button was pressed on a remote control with the ID 14.

Figure 12: IR Remote Control Command Register

If an L-STAT device gets paired with a certain remote control it will only update the
ir_remote_control_command register and the IRC bit at the short_pressed register when
receiving a command from this remote control. So an L-STAT device can only be paired
with one remote control but a remote control can be used for multiple L-STAT devices.

Pairing can be achieved by pressing Menu and Right button at the remote control for at least
6s while pointing towards the L-STAT device. If pairing worked the secondary display will

shortly show ‘IRP’ (IR pairing). The remote ID will be saved internally and the IRCP flag of
the config_flags register at address 192 (Table 22 at Page 33) will be set.

The pairing can be canceled by either clearing the IRCP flag or by pressing Menu and Left
button for at least 6s. If the secondary display shows ‘IRUP’ (IR unpairing) shortly the pairing

is suspended.

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6 Firmware Update

6.1 Firmware Update via the Web Interface

The current firmware can be downloaded from the Software Download section on the
LOYTEC website: https://www.loytec.com/support/download

For the firmware update go to the web interface of the L-INX, L-ROC, L-IOB device.

To Update the Firmware via the Web Interface

1. Select Modbus under the Commission menu.

2. A listing of available devices will be displayed. Select the devices for the firmware

update by clicking the check box on the right.

3. Select Update firmware… from the drop-down menu as shown in Figure 13.

Figure 13: Web Interface – Modbus Commission

4. Select the firmware file and click Open.

5. The selected devices will then receive the firmware updated.

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7 Troubleshooting

7.1 Technical Support

LOYTEC offers free telephone and e-mail support for the L-STAT product series. If none
of the above descriptions solves your specific problem please contact us at the following
address:

LOYTEC electronics GmbH
Blumengasse 35
A-1170 Vienna
Austria / Europe

e-mail : [e-mail]
Web : http://www.loytec.com
tel : [phone]
fax : [phone]

or

LOYTEC Americas Inc.
N27 W23957 Paul Road
Suite 103
Pewaukee, WI 53072
USA

e-mail: [e-mail]
Web: http://www.loytec-americas.com
tel: [phone]
fax: [phone]

or

LOYTEC Asia Corporation Ltd.
16F.-3, No. 155, Zhongyang Rd
Xindian District
New Taipei City 23150
Taiwan

e-mail: [e-mail]
tel: [phone]
fax: [phone]

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8 Specifications

8.1 Physical Specifications

Operating Voltage 24 VDC ±10 %

Power Consumption see Table 41

In rush current up to 4A @ 24 VDC

Operating Temperature (ambient) 0C to +50C

Storage Temperature –10C to +60C

Humidity (non condensing) operating 10 to 90 % RH @ 50C

Humidity (non condensing) storage 10 to 90 % RH @ 50C

LCD Backlight Lifetime 50,000 hours

Enclosure 94.5 x 110 x 19.5 (W x H x D)

Environmental Protection IP 30 (enclosure)

Installation Europe: switch box Ø 60mm
US: switch box 4” x 2”

LCD brightness

LSTAT-800-Gx-Lx &
LSTAT-801-Gx-Lx

LSTAT-802-Gx-Lx

100%

0.8W

0.93W avg., 1.8W max.

0%

0.09W

0.22W avg., 1.1W max.

Table 41: Power Consumption

8.2 Sensor Specifications

Ambient Temperature Sensor type: CMOS

range: -40 – 125 °C
resolution: 0.1 °C
accuracy: ± 0.5 °C (5 – 60 °C)

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Relative Humidity Sensor type: capacitive

range: 0 – 100 %R.H.
resolution: 0.1 %R.H.
accuracy: ±2 %R.H. @ 25 °C, 20 – 80 %R.H.
±3 %R.H. @ 25 °C, 0 – 20 %R.H. &
80 – 100 %R.H.

CO2 Sensor type: NDIR

range: 0 – 2000 ppm
resolution: 1 ppm
accuracy: ±30 ppm or ±3 % of reading
warm up time: < 2 min (operational),
10 min (max. accuracy)
self calibration: the sensor will perform a self
calibration routine within the first
24 hours of continuous operation.
After calibration has finished the
sensor will operate at the defined
accuracy.

Occupancy Sensor max. range: 5 m

detection zones: 64
opening angle: 94° H, 82° V (see Figure 14)
temperature difference to background: 4°C

TOP-View: SIDE-View:

Figure 14: Occupancy Sensor Opening Angle

Infrared Receiver protocol: NEC

carrier: 38 kHz @ 950 nm
Apple remote control compatible

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9 References

[3] L-INX User Manual, LOYTEC electronics GmbH,

Document № 88073020, September 2015.

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10 Revision History

Date

Version

Author

Description

2012-12-09

1.0

HG

Initial Manual Version