iSMA SMA-B-LP User manual

iSMA-B-LP
User Manual
Modbus
Global Control 5 Sp. z o.o.
Warsaw, Poland
www.gc5.pl

Table of contents
1Introduction................................................................................................................................................................... 5
1.1 Revision history ......................................................................................................................................................................... 5
1.2 Safety rules ................................................................................................................................................................................ 5
1.3 Technical specifications.......................................................................................................................................................... 6
1.4 Room Panel versions ............................................................................................................................................................... 7
...................................................................................................................................................................................................... 8
1.5 Dimensions ................................................................................................................................................................................ 8
2Power supply and Communication............................................................................................................................ 9
2.1 DC power connection.............................................................................................................................................................10
2.2 AC power connection .............................................................................................................................................................10
2.3 Connecting the communication bus (RS485) ...................................................................................................................10
2.4 Connecting more Room Panels in the network ................................................................................................................11
2.5 RS485 network termination ..................................................................................................................................................11
2.6 Connection by USB .................................................................................................................................................................12
3Restoring the default settings ..................................................................................................................................13
4Main parameters ........................................................................................................................................................14
4.1 PANEL_PASSWORD (40028) ................................................................................................................................................14
4.2 SUBMENU_PROTECTION (40228) ......................................................................................................................................14
4.3 Communication parameters.................................................................................................................................................15
4.3.1 COUNTER_OF_RECEIVED_MESSAGES (30004) ............................................................................................................................. 15
4.3.2 COUNTER_OF ERROR_MESSAGES (30006).................................................................................................................................... 15
4.3.3 COUNTER_OF_SENT_MESSAGES (30008) ...................................................................................................................................... 15
4.3.4 BAUD_RATE (40017)............................................................................................................................................................................. 15
4.3.5 STOP_BITS (40018) .............................................................................................................................................................................. 15
4.3.6 PARITY_BIT (40020) ............................................................................................................................................................................. 16
4.3.7 RESPONSE_DELAY_TIME (40021)..................................................................................................................................................... 16
4.3.8 PANEL_ADDRESS (40023)................................................................................................................................................................... 16
4.3.9 PROTOCOL (40024) .............................................................................................................................................................................. 16
4.4 Time configuration .................................................................................................................................................................17
4.4.1 HOURS (40203) ..................................................................................................................................................................................... 17
4.4.2 MINUTES (40204) ................................................................................................................................................................................. 17
4.4.3 TIME_VISIBILITY (Register 40218, bit 0) .......................................................................................................................................... 17
4.4.4 ENTER_MENU_TIME (40223). ............................................................................................................................................................ 17
4.4.5 EXIT_EDIT_TIME (40224)..................................................................................................................................................................... 17
4.4.6 EXIT_MENU_TIME (40225).................................................................................................................................................................. 18
4.5 Device Configuration ..............................................................................................................................................................18
4.5.1 VERSION_TYPE (30001) ...................................................................................................................................................................... 18
4.5.2 LIVE_TIME (30012)................................................................................................................................................................................ 18
4.5.3 SENSORS (Register 30029, bits 0 - 2) ............................................................................................................................................... 18
4.5.4 DEVICE_ACTIONS (40001) .................................................................................................................................................................. 19
4.6 DEVICE CONFIGURATION REGISTER (40205) .................................................................................................................19
4.6.1 BEEPER (Register 40205, bit 0) .......................................................................................................................................................... 19
4.6.2 TIME_FORMAT (Register 40205, bit 1) ............................................................................................................................................. 19
4.6.3 BACKGROUND_ILLUMINATION_ LCD_ACTIVE (Register 40205, bit 3) ...................................................................................... 19
4.6.4 BACKGROUND_ILLUMINATION_KEY_PAD_ACTIVE (Register 40205, bit 4) ............................................................................ 19
4.6.5 CO2_IN_ALARM_FLASHING_LCD (Register 40205, bit 5) ............................................................................................................. 20
4.6.6 CO2_IN_ALARM_BUZZER (Register 40205, bit 6)........................................................................................................................... 20
4.6.7 CO2_IN_ALARM_SHOW_HIGH (Register 40205, bit 7)................................................................................................................... 20
4.6.8 SUBMENU_ICON_DISPLAY_OFF (Register 40205, bit 10) ............................................................................................................ 20
4.6.9 PANEL_OFF (Register 40205, bit 11)................................................................................................................................................. 20
4.6.10 KEY_PAD_OFF (Register 40205, bit 12) ............................................................................................................................................ 20
4.6.11 LCD_FLASHING (Register 40205, bit 13).......................................................................................................................................... 21
4.6.12 KEY_PAD_FLASHING (Register 40205, bit 14) ................................................................................................................................ 21

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4.7 Room Panel Modes ................................................................................................................................................................21
4.8 LCD Display ..............................................................................................................................................................................22
4.8.1 Icons displaying. .................................................................................................................................................................................... 22
4.8.1.1 LCD_ICON_DISPLAY (40219) ..................................................................................................................................................................... 23
4.8.1.2 LCD_ICON_FLASHING (40220)................................................................................................................................................................. 23
4.8.1.3 LCD_ICON_FLASHING_TIME (40221)...................................................................................................................................................... 24
4.8.1.4 SUBMENU_ICON_FLASHING (40229)..................................................................................................................................................... 24
4.8.1.5 SUBMENUICON_FLASHING_TIME (40222) .............................................................................................................................................. 25
4.8.2 Main Menu display ................................................................................................................................................................................ 25
4.8.2.1 REFRESHING_TIME (40217)..................................................................................................................................................................... 25
4.8.3 LCD_BACKGROUND_ILLUMINATION_SETTINGS ........................................................................................................................... 26
4.9 Key Pad .....................................................................................................................................................................................27
4.9.1 Menu button ........................................................................................................................................................................................... 27
4.9.2 OK button ................................................................................................................................................................................................ 27
4.9.3 Arrow buttons (up and down) ............................................................................................................................................................. 27
4.9.4 Key Pad Background Illumination Settings...................................................................................................................................... 28
5Sensors Configuration...............................................................................................................................................29
5.1 Temperature Sensor...............................................................................................................................................................29
5.1.1 TEMPERATURE_SENSOR_ACTUAL_VALUE (30301)..................................................................................................................... 29
5.1.2 TEMPERATURE_SENSOR_OFFSET (40304).................................................................................................................................... 30
5.1.3 TEMPERATURE_FILTER (40307)....................................................................................................................................................... 30
5.1.4 TEMPERATURE_NAME (40310)......................................................................................................................................................... 30
5.1.5 TEMPERATURE_CONFIGURATION (40316, bit 0 and bit 4) ......................................................................................................... 31
5.2 Humidity Sensor......................................................................................................................................................................31
5.2.1 HUMIDITY_SENSOR_ACTUAL_VALUE (30302)............................................................................................................................... 31
5.2.2 HUMIDITY_SENSOR_OFFSET (40305) ............................................................................................................................................. 31
5.2.3 HUMIDITY_FILTER (40308)................................................................................................................................................................. 31
5.2.4 HUMIDITY_NAME (40312)................................................................................................................................................................... 31
5.2.5 HUMIDITY_CONFIGURATION(Register 40317, bit 0 and bit 4).................................................................................................... 32
5.3 CO2_SENSOR ...........................................................................................................................................................................32
5.3.1 CO2_SENSOR_ACTUAL_VALUE (30303)........................................................................................................................................... 32
5.3.2 CO2_SENSOR_OFFSET (40306).......................................................................................................................................................... 32
5.3.3 CO2_FILTER (40309) ............................................................................................................................................................................. 33
5.3.4 CO2_NAME (40314)............................................................................................................................................................................... 33
5.3.5 CO2_CONFIGURATION (40318, bit 0) ................................................................................................................................................ 33
5.3.6 CO2_SETPOINT_FOR_ALARM (40226).............................................................................................................................................. 33
5.3.7 CO2_DIFFERENTIAL_FOR_ALARM (40227)..................................................................................................................................... 33
6Setpoint registers.......................................................................................................................................................34
6.1 SETPOINT_VALUE (41501) ...................................................................................................................................................34
6.2 EFFECTIVE_SETPOINT (31502)...........................................................................................................................................34
6.3 DEFAULT_SETPOINT (41503) ..............................................................................................................................................34
6.4 OFFSET_SETPOINT (41504).................................................................................................................................................34
6.5 SETPOINT_LOW_LIMIT (41505)...........................................................................................................................................35
6.6 SETPOINT_HIGH_LIMIT (41506)..........................................................................................................................................35
6.7 OFFSET_RANGE (41507) ......................................................................................................................................................35
6.8 SETPOINT_STEP (41508)......................................................................................................................................................35
6.9 OFFSET_NAME (41509) ........................................................................................................................................................35
6.10 SETPOINT_NAME (41511) ....................................................................................................................................................36
6.11 SETPOINT CONFIGURATION (41513) ................................................................................................................................36
6.11.1 SETPOINT_VISIBILITY (Register 41513, bit 0)................................................................................................................................. 36
6.11.2 SETPOINT_EDITION (Register 41513, bit 1)..................................................................................................................................... 36
6.11.3 OPERATING_MODE (Register 41513, bit 2)...................................................................................................................................... 36
6.11.4 SETPOINT_DISPLAY (Register 41513, bit 3) .................................................................................................................................... 36
6.11.5 THIRD_POINT_ACTIVE (Register 41513, bit 4) ................................................................................................................................ 37
6.11.6 SETPOINT_FAST_EDIT_MODE (Register 41513, Bit 5) .................................................................................................................. 37
6.12 Setting setpoint .......................................................................................................................................................................38

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6.12.1 Operating Mode is “true” (see Operating Mode) ............................................................................................................................. 38
6.12.2 Operating Mode is false (see Operating Mode ) .............................................................................................................................. 39
7Fan Configuration Registers....................................................................................................................................40
7.1 FAN_CURRENT_SPEED (41601) .........................................................................................................................................40
7.2 FAN_MODE (41602)...............................................................................................................................................................40
7.3 FAN_TYPE (41603).................................................................................................................................................................41
7.4 FAN_MODE_NAME (41604-41612).....................................................................................................................................42
7.5 FAN_CONFIGURATION (41614) ..........................................................................................................................................42
7.5.1 FAN_CURRENT_SPEED_VISIBILITY (Register 41614, bit 0) ....................................................................................................... 42
7.5.2 FAN_EDITION (Register 41614, bit 1)............................................................................................................................................... 42
7.5.3 PART_EDITABLE (Register 41614, Bit 2)......................................................................................................................................... 42
7.5.4 FAN_CONFIG_FAST_EDIT_MODE (Register 41614, Bit 5)........................................................................................................... 43
7.5.5 FAN_CONFIG_LOCAL_MODE (Register 41614, Bit 6) ................................................................................................................... 44
7.6 FAN_ICON_FLASHING_TIME (41615) ...............................................................................................................................44
8Occupancy Registers ................................................................................................................................................45
8.1 OCCUPANCY_CURRENT_STATUS (41701)......................................................................................................................45
8.2 OCCUPANCY_MODE (41702)...............................................................................................................................................45
8.3 OCCUPANCY_MODE_NAME (41703-41705)....................................................................................................................46
8.4 OCCUPANCY_CONFIGURATION (41707)..........................................................................................................................46
8.4.1 OCCUPANCY_VISIBILITY (Register 41707, bit 0) .......................................................................................................................... 46
8.4.2 OCCUPANCY_MODE_EDITION (Register 41707, bit 1)................................................................................................................. 46
8.4.3 EDIT_MODE (Register 41707, Bit 5).................................................................................................................................................. 46
8.4.4 OCCUPIED_CONFIG_LOCAL_MODE (Register 41707, Bit 6) ....................................................................................................... 47
9Registers adjustable locally from the Room Panel..............................................................................................49
9.1 Configuration (CONF)............................................................................................................................................................49
9.2 Device (DEV) ............................................................................................................................................................................50
9.3 Temperature (TEMP) .............................................................................................................................................................51
9.4 Humidity (HUM)......................................................................................................................................................................51
9.5 CO2 (CO2).................................................................................................................................................................................52
9.6 Setpoint (SETP) ......................................................................................................................................................................53
9.7 Fan (Fan)...................................................................................................................................................................................54
9.8 Occupancy (OCCU) ................................................................................................................................................................54
10 Main Menu user defined parameters. ....................................................................................................................55
11 Submenus with user defined parameters..............................................................................................................55
11.1 Numeric parameter type registers .....................................................................................................................................55
11.1.1 XPresentValue (X = [1.8]) .................................................................................................................................................................... 56
11.1.2 XName (X = [1.8]).................................................................................................................................................................................. 56
11.1.3 XPriority (X = [1.8])................................................................................................................................................................................ 56
11.1.4 XSTEP (X = [1.8])................................................................................................................................................................................... 56
11.1.5 XLowLimit (X = [1.8])............................................................................................................................................................................ 56
11.1.6 XHIGH_LIMIT (X = [1.8])....................................................................................................................................................................... 56
11.1.7 XConfiguration (X = [1.8]).................................................................................................................................................................... 56
11.1.7.1 Visibility bit 0............................................................................................................................................................................................... 56
11.1.7.2 Editable bit 1 ............................................................................................................................................................................................... 57
11.1.7.3 First point Active bit 2............................................................................................................................................................................... 57
11.1.7.4 Second point Active bit 3 ......................................................................................................................................................................... 57
11.1.7.5 Third point Active bit 4.............................................................................................................................................................................. 57
11.1.7.6 oC Unit Active bit 6...................................................................................................................................................................................... 57
11.1.7.7 F Unit Active bit 7....................................................................................................................................................................................... 57
11.1.7.8 Pa Unit Active bit 8 .................................................................................................................................................................................... 57
11.1.7.9 Lx Unit Active bit 9..................................................................................................................................................................................... 57
11.1.7.10 ppm Unit Active bit 10 ............................................................................................................................................................................ 57
11.1.7.11 m3h Unit Active bit 11 ............................................................................................................................................................................ 58
11.1.7.12 %Rh Unit Active bit 12 ............................................................................................................................................................................ 58
11.1.7.13 Ls Unit Active bit 13 ................................................................................................................................................................................ 58

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11.1.7.14 % Unit Active bit 14 ................................................................................................................................................................................. 58
11.1.7.15 h Unit Active bit 15 .................................................................................................................................................................................. 58
11.2 Boolean parameter type registers......................................................................................................................................58
11.2.1 XPresentValue (X = [1.8]) .................................................................................................................................................................... 58
11.2.2 XName (X = [1.8]).................................................................................................................................................................................. 58
11.2.3 XTrueText (X = [1.8])............................................................................................................................................................................. 59
11.2.4 XFalseText (X = [1.8])........................................................................................................................................................................... 59
11.2.5 XPriority (X = [1.8])................................................................................................................................................................................ 59
11.2.6 XConfiguration (X = [1.8]).................................................................................................................................................................... 59
11.2.6.1 Visibility bit 0............................................................................................................................................................................................... 59
11.2.6.2 Editable bit 1 ............................................................................................................................................................................................... 59
11.3 Submenu MenuActivePoints registers .............................................................................................................................60
11.4 Submenu Boolean All Present Value registers (40107 - 40113) ...................................................................................60
12 List of all Modbus Registers....................................................................................................................................61
12.1.1 List of User defined parameters Modbus registers...................................................................................................................... 68
12.1.2 Main Menu user defined parameters............................................................................................................................................... 68
12.1.3 Temperature Submenu........................................................................................................................................................................ 74
12.1.4 Fan Submenu......................................................................................................................................................................................... 82
12.1.5 Light Submenu ...................................................................................................................................................................................... 90
12.1.6 Blind Submenu ...................................................................................................................................................................................... 98
12.1.7 Alarms Submenu ................................................................................................................................................................................106
12.1.8 Occupancy Submenu.........................................................................................................................................................................114

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1Introduction
1.1 Revision history
Rev
Date
Description
1.0
28.08.2016
First edition
1.1
21.02.2017
The reason for creation of new version of the document:
New function:
•Added SubmenuIconDisplayOFF bit in DeviceConfiguration register to
disable displaying of Submenu Icons;
Changes in Document:
•Added SubmenuIconDisplayOFF bit description in DeviceConfiguration
section
•Added description of Submenu Boolean All present Value registers
1.2
06.06.2017
Added information about BACnet MS/TP protocol
1.3
16.11.2017
Added new version of the Panel (iSMA-B-LP(-XX)-1)
Table 1 Revision history
1.2 Safety rules
Note: Incorrect wiring of this product can damage the product and lead to other hazards.
Make sure the product has been correctly wired before turning the power ON.
Before wiring or removing/mounting the product, be sure to turn the power OFF. Failure to
do so might cause an electric shock.
Do not touch electrically charged parts such as power terminals. Doing so might cause an
electric shock.
Do not disassemble the product. Doing so might cause an electric shock or faulty
operation.
Use the product within the operating ranges recommended in the specification (voltage,
shock, mounting direction, atmosphere etc.). Failure to do so might cause a fire or faulty
operation.
Firmly connect plugs to the terminals. Insufficient connection of the plugs might cause a
power failure and communication problems.

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1.3 Technical specifications
Power supply
Voltage
24V AC/DC ± 20%
Power consumption
iSMA-B-LP(-1) 0.5 W (24 V DC), 0.75 VA
(24 VAC)
iSMA-B-LP-H(-1) 0.5 W (24 V DC), 0.75 VA
(24 VAC)
iSMA-B-LP-C(-1)0.7 W (24 V DC), 1 VA (24 V AC)
iSMA-B-LP-HC(-1) 0.7 W (24 V DC), 1 VA
(24 V AC)
Built-in sensors
Temperature sensor
•10k NTC type
•Accuracy: ±0.5˚C
•Range: 0 - 50˚C
•Resolution: ±0.1˚C
Humidity sensor
•Range: 0 –100% RH
•Accuracy: ±2% RH in range 20 – 80% RH
•Resolution: ±1% RH
CO2 sensor
•Method Non Dispersive Infrared (NDIR),
gold plated optics, diffusion sampling (with
Telaire’s Patented ABC Logic Self Calibrated
Algorithm)
•Range: 400 –2000 ppm
•Accuracy: ±30 ppm OR ±3% of
reading
•Stability: < 2% of FS over life of
sensor (15 years typical)
•Warm Up Time : < 2 minutes
(operational);
10 minutes (maximum accuracy)
•Calibration: ABC Logic Algorithm
•Manual Calibration Interval: Not
required
RS485 Interface
Communication protocols
Modbus RTU, Modbus ASCII, BACnet MS/TP
Baud rate
From 4800 to 115200 bps
USB
USB
Mini USB , Type B
Environment
Ingress Protection
IP40
Temperature
Storage
-40˚C to +85˚C
Operating
0˚C to +50˚C
Humidity
Relative
5% to 95%
Platform
ARM Cortex - M0+
Housing
•Construction: plastic, self-extinguishing
(PC/ABS)
•Wall mounting (standard electric box)
•Cooling: internal air circulation

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Dimension
Width
100 mm
Length
27 mm
Height
123 mm
Table 2 Technical specification
1.4 Room Panel versions
There are four different sensors’configuration options with which the Room Panel can be
equipped. According to presence of particular sensors, different parameters and settings
are available.
All possible sensors’configuration versions are shown in the Table 3 below.
Ordering
Temperature
Humidity
CO2
iSMA-B-LP(-1)*
✓
iSMA-B-LP-H(-1)*
✓
✓
iSMA-B-LP-C(-1)*
✓
✓
iSMA-B-LP-HC(-1)*
✓
✓
✓
Table 3 Room Panel Sensor Configuration versions
*There are two versions of keypad icons set available: standard and optional.
The ordering code for a standard keypad icons set panel version is iSMA-B-LP(-XX), and for
the optional icons set is iSMA-B-LP(-XX)-1.
iSMA-B-LP(-XX) iSMA-B-LP(-XX)-1

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1.5 Dimensions
Figure 1 Room Panel iSMA-B-LP dimensions

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2Power supply and Communication
The Room Panel iSMA-B-LP can be powered with 24 V AC/DC. Power consumption
depends on power supply voltage type used and CO2sensor presence (see Technical
specification table). There are two RJ12 sockets mounted on the back side of the Room
Panel (Figure 2). Each RJ12 socket has the same internal connection and functionality.
Two RJ12 sockets allow for using in and out connections for other devices in the network.
Power supply can be connected through the RJ12 connector as shown in Figure 3 below.
Figure 2 RJ12 sockets in the back side of the Room Panel
There are two pairs of pins for 24 V AC/DC power supply connection (+24 V DC pins 5 and
6, -24 V DC pins 1 and 4). These pin pairs can be used freely. It is especially useful when
different types of connection cables are used (4 or 6 core). It is possible to use single
cable with RJ12 connectors for power supply and RS485 communication. Pins no. 2 and
3 are dedicated for RS485 communication connection. Communication bus should be
connected as shown in Figure 6.
The Room Panel exchanges data with other devices through Modbus protocol
(RTU/ASCII) and BACnet MS/TP.
Figure 3 RJ12 socket pin configuration
WARNING! With RS485 pay attention to standard polarization. Connect RS485+ to pin no. 3
and RS485- to pin no. 2 as shown in Figure 3 above.

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2.1 DC power connection
Figure 4 DC power supply connection
2.2 AC power connection
Figure 5 AC power supply connection
2.3 Connecting the communication bus (RS485)
Figure 6 RS485 connection

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2.4 Connecting more Room Panels in the network
It is possible to connect more Room Panels into the one network in a very simple way.
Additional RJ12 socket can be used to connect another Room Panel by using one single
cable. Every panel can exchange information within the network. The solution can be
applied in large areas when more than one Room Panels are needed. Maximal number of
devices connected in one network is 128.
WARNING! First and last device in the network need to have termination activated (see
RS485 network termination)
Max. 128
RJ12 *** RJ12
First Room Panel in the network Last Room Panel in the network
Figure 7 Several Room Panels connection
2.5 RS485 network termination
The transmission line effects often present a problem on data communication networks.
These problems include reflections and signal attenuation.
To eliminate the presence of reflections from cable ends, the cable must be terminated at
both ends with a resistor across the line equal to its characteristic impedance. Both ends
must be terminated since the direction of propagation is bidirectional. In case of a RS485
twisted pair cable this termination is typically 120 Ω.
Each panel has in-built termination resistor which can be added to the network by setting
switch no. 2 in the DIP-switch to ON position. The last and first Room Panels in the
network need to have termination activated.
Figure 8 Connecting termination resistor by Switch no. 2

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2.6 Connection by USB
USB connection is dedicated for maintenance and settings.
USB port (mini type B) is located at the bottom of the device (Figure 9).
Figure 9 Mini-USB port
USB connection provides Power Supply for the Room Panel (+5 V DC) so there is no need
for additional power supply in this connection type.
Figure 10 Mini-USB port pinout

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3Restoring the default settings
To restore the default configuration of all registers, follow the below steps:
1. Turn power supply OFF
2. Set switch no. 1 on the DIP-switch to ON position.
Figure 11 Switch no. 1 position for default setting restore procedure
3. Turn power supply ON, LCD display starts blinking.
4. Set switch no. 1 on the DIP-switch to OFF to restore the default settings. To cancel
the reset, turn the power off and set switch no. 1 on the DIP-switch to OFF.
Default communication settings:
Register Name
Default Value
BAUD RATE
11520 (115200 bps)
STOP BITS
1
DATA BITS
8
PARITY BITS
0
ADDRESS
1
PROTOCOL
0 (Modbus RTU)
Table 4 Default communication settings.

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4Main parameters
iSMA-B-LP is a wall panel with 2.3” LCD display and four function buttons. Additionally, the
panel has the in-built temperature sensor and optionally the humidity and CO2sensors.
iSMA-B-LP is powered with 24 V AC/DC and has the in-built RS485 port (Modbus
RTU/ASCII) and BACnet MS/TP. Use of open communication protocol allows to connect
the panel with any controller which supports Modbus RTU/ASCII or BACnet MS/TP.
Together with iSMA-B-FCU controller, the panel allows to change the basic parameters
such as: temperature setpoint, fan speed, FCU mode and other. Thanks to in-built USB
port, there is possibility of updating firmware and panel configuration without the
necessity of power supply. iSMA-B-LP has modern design and is available in different
colours (white is basic), on client’s request.
4.1 PANEL_PASSWORD (40028)
The register has password which is necessary to enter submenus and configuration
menus locally from the Room Panel (PIN code). Default password is 1000.
4.2 SUBMENU_PROTECTION (40228)
After activation of the particular bit of the register set, a password protects access to
different Submenu Editions (see table below).
The function allows for block changing of parameters inside each Submenu. It can be
useful especially in areas where Room Panel is vulnerable and subject to unauthorized
interaction (common areas).
In default setting all bits are inactive (access to each submenu unprotected).
Register bit
number
Name
Inactive state
Active state
Submenu
protection
0
Temperature
OFF(def)
ON
Temperature
Submenu
1
Fan
OFF(def)
ON
Fan Submenu
2
Light
OFF(def)
ON
Light Submenu
3
Blind
OFF(def)
ON
Blind Submenu
4
Alarms
OFF(def)
ON
Alarms Submenu
5
Occupancy
OFF(def)
ON
Settings Submenu
Table 5 Submenu Protection register structure

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4.3 Communication parameters
4.3.1 COUNTER_OF_RECEIVED_MESSAGES (30004)
32-bit register with the number of valid Modbus messages received by the Room Panel
from the time of the last power-up. The value is reset after power cycle or after changing
of transmission parameters (speed, stop bits, parity, etc.).
4.3.2 COUNTER_OF ERROR_MESSAGES (30006)
32-bit register with the number of error Modbus messages received by the Room Panel
from the time of the last power-up. The value is reset after power cycle or after changing
of transmission parameters (speed, stop bits, parity, etc.).
4.3.3 COUNTER_OF_SENT_MESSAGES (30008)
32-bit register with the number of Modbus messages sent by the Room Panel from the
time of the last power-up. The value is reset after power cycle or after changing
transmission of parameters (speed, stop bits, parity, etc.).
4.3.4 BAUD_RATE (40017)
Actual baud rate in bps divided by 10. By default: 11520 (115200bps).
Table 6 Baud rate
4.3.5 STOP_BITS (40018)
Number of stop bits is determined on the basis of this register in accordance with the
following table:
Value
No of stop bits
1
1(default)
2
2
Table 7 Stop bits
Value
Baud rate
480
4800
960
9600
1920
19200
3840
38400
5760
57600
11520
115200(def)

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4.3.6 PARITY_BIT (40020)
Each byte of data being transferred may have additional protection as a parity bit added
before stop bit (bits).
The method of calculating parity bit determines the below table:
Register value
Type of parity bit
0
None(def)
1
Odd (number of all ones in a byte is odd)
2
Even (number of all ones in a byte is even)
Table 8 Parity bit
Figure 12 Modbus message frame
4.3.7 RESPONSE_DELAY_TIME (40021)
The value of this 16-bit register determines the number of milliseconds to wait before the
unit answers the question. This time is used to extend the interval between the question
and the answer.
The default value of 0 means no delay (the answer is sent once during the 3.5 character
required by the protocol Modbus RTU).
4.3.8 PANEL_ADDRESS (40023)
This register contains information about the Modbus address of the Room Panel.
Default address is 1.
4.3.9 PROTOCOL (40024)
The register is responsible for protocol selection. Protocol is determined according to the
register value as shown in the following table:
Value
Action
0
Modbus RTU(def)
1
Modbus ASCII
2
BACnet MS/TP
Table 9 Protocol selectio

iSMA-B-LP Room Panel/Modbus
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4.4 Time configuration
The time (if activated) is displayed on the 14-segment display block. After restart of the
device clock is not displayed. It starts to be visible after the Room Panel receives first
message with correct time value.
Figure 13 14-segment displays block for time displaying
4.4.1 HOURS (40203)
The register contains actual hour value in time displaying mode. 12h/24h mode is
determined by DEVICE_CONFIGURATION register (in default 24 h). When the clock is set
in 12h format, icons AM and PM are displayed automatically. A semicolon which
separates hours and minutes section flashes with 1 Hz frequency.
4.4.2 MINUTES (40204)
The register contains actual minute value in time displaying mode.
4.4.3 TIME_VISIBILITY (Register 40218, bit 0)
Bit 0 of the 40218 register determines the time visibility. If bit 0 is true, clock is visible in
Main Menu (it starts to be visible when the Room Panel receives first message with
correct time value after panel restart or connection of power supply). The clock is
displayed on 14-segment display block when the name of active parameter (visible) is
empty (each character in the parameter name is NULL). Default value is „true” (visible).
4.4.4 ENTER_MENU_TIME (40223).
When the Menu button is pushed longer than time value stored in the ENTER_MENU_TIME
register the user enters Submenu Edit Mode.
When the Menu button is pushed together with OK button longer than time value stored in
the ENTER_MENU_TIME register the user enters Settings Submenu Edit Mode. This
register has min. value 1 min. Default value is 2 sec.
4.4.5 EXIT_EDIT_TIME (40224)
The register contains the time after which edition of any editable parameter is finished.
Time starts after the last Key Pad activation (pushing any button during Edit Mode). This
register has min. value 1 min. Default value is 5 sec.
Hours section
Minutes section

iSMA-B-LP Room Panel/Modbus
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4.4.6 EXIT_MENU_TIME (40225)
The register contains the time value after which Submenu Edit mode and Settings
Submenu Edit mode is finished and the device leads the user back to the Main Menu
displaying. Time starts after the last Key Pad activation (pushing any button). This
register has min. value 1 min. Default value is 10 sec.
4.5 Device Configuration
4.5.1 VERSION_TYPE (30001)
In this register are encoded type and firmware version of module.
High byte contains information about the type (Room Panel has a version 11110(0x6F16)
or 23910(0xEF16) when the device stays in bootloader).
Low byte contains the module firmware version multiplied by 10 (0x0A16 = 1010 means
firmware in version 1.0).
An example:
In register 30001 is number 267110 = 0x0A6F16.This means that it is a Room Panel with
firmware in version 1.0 (0x0A16 = 1010).
4.5.2 LIVE_TIME (30012)
This 32-bits register contains information in seconds about “UP time”. After power supply
failure or the Panel restart Live time register value resets and the “UP time ” counts again.
4.5.3 SENSORS (Register 30029, bits 0 - 2)
The s ensors configuration which are already built-in in the Room Panel is encoded in the
3 first bits of the register Particular bit activity indicate which sensor is in-built (see table
below).
Register bit
number
Inactive state
Active state
Submenu
protection
0
No sensor
Built-in
Temperature Sensor
1
No sensor
Built-in
CO2sensor
2
No sensor
Built-in
Humidity sensor
Table 10 Sensors configuration

iSMA-B-LP Room Panel/Modbus
version 1.3 www.gc5.pl Page 19 / 121
4.5.4 DEVICE_ACTIONS (40001)
Setting register 40001 according to the table below enables 1 of 4 available actions: reset
device, reload settings, reset settings or enter bootloader.
Register
value decimal
Register value
hexadecimal
Action
511
0x01FF
Reset
767
0x02FF
Reload settings
1023
0x03FF
Reset settings
1279
0x04FF
Enter bootloader
Table 11 Device actions
4.6 DEVICE CONFIGURATION REGISTER (40205)
4.6.1 BEEPER (Register 40205, bit 0)
Bit 0 of register 40205 activates/deactivates the Beeper. When the beeper is active any
single pushing any button is signalized by the beeper sound. In addition, the beeper can
be also used for CO2 Alarm signalization. By default the beeper is active (bit 1 is „true”).
4.6.2 TIME_FORMAT (Register 40205, bit 1)
Bit 1 of register 40205 defines time format display. When bit is „true”, time is set in 12h
format. Otherwise time is displayed in 24h format (default).
When the clock is set in 12h format and it receives hours value in 24h format, icons AM
and PM are displayed according to calculation. A semicolon which separates hours and
minutes section in the clock flashes with 1 Hz frequency.
4.6.3 BACKGROUND_ILLUMINATION_ LCD_ACTIVE (Register 40205, bit 3)
Bit 3 of register 40205 switches on LCD background illumination. When bit is „true”, LCD
display is illuminated with intensity according to values stored in registers dedicated for
particular Room Panel modes. When the bit is “false” LCD display is not illuminated in any
mode. By default bit is “true”.
4.6.4 BACKGROUND_ILLUMINATION_KEY_PAD_ACTIVE
(Register 40205, bit 4)
Bit 4 of register 40205 switch on key pad background illumination When bit is „true” Key
Pad is illuminated with intensity according to values stored in registers dedicated for
particular Room Panel modes. When the bit is “false” Key Pad is not illuminated in any
mode. By default bit is “false” (Key Pad not illuminated).
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