iSMA CONTROLLI BACnet iSMA-B-MINI User manual

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DMP261en | 1st Issue rev. 8 | 05/2022
iSMA-B-MINI/MIX
User Manual
BACnet
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Table of Contents
1 Introduction ............................................................................................................................. 6
1.1 Revision History................................................................................................................................7
2 Safety Rules............................................................................................................................ 10
2.1 Wiring............................................................................................................................................... 11
2.2 EN 60730-1 Power Supply Considerations ............................................................................ 11
2.3 FCC Compliance Note.................................................................................................................. 11
3 Technical Specification ........................................................................................................ 13
3.1 Summary Table for All Modules................................................................................................ 16
4 Hardware Specification ....................................................................................................... 18
4.1 Dimensions .................................................................................................................................... 18
4.1.1 MINI Series Dimensions........................................................................................................ 18
4.1.2 MIX18 Series Dimensions..................................................................................................... 18
4.1.3 MIX38 Series Dimensions..................................................................................................... 18
4.2 Power Supply Connection .......................................................................................................... 19
4.3 LED Indicators ............................................................................................................................... 19
4.3.1 MIX Series Front Panels ........................................................................................................ 19
4.3.2 MINI Series Front Panels....................................................................................................... 20
4.4 RS485 Port ..................................................................................................................................... 23
4.4.1 RS485 Communication Bus Connection........................................................................... 23
4.4.2 RS485 Network Termination................................................................................................ 23
4.5 Setting Module Address.............................................................................................................. 23
4.5.1 Setting MAC Address in BACnet Protocol......................................................................... 23
4.5.2 Setting Device ID in BACnet Protocol ................................................................................ 24
4.6 Baud Rate ....................................................................................................................................... 24
4.7 Protocol........................................................................................................................................... 25
4.8 Default Settings............................................................................................................................. 25
4.8.1 Restoring Default Settings.................................................................................................... 27
5 Inputs and Outputs.............................................................................................................. 28
5.1 Local I/O.......................................................................................................................................... 28
5.2 Universal Inputs ............................................................................................................................ 28
5.2.1 Universal Input Voltage Connection .................................................................................. 29
5.2.2 Universal Input Current Connection.................................................................................. 29
5.2.3 Universal Input Resistance Connection ............................................................................ 30
5.2.4 Universal Input Dry Contact Connection .......................................................................... 30
5.3 Digital Inputs.................................................................................................................................. 30

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5.3.1 Digital Input Counter ............................................................................................................. 31
5.4 Analog Outputs ............................................................................................................................. 31
5.4.1 Analog Output Voltage Connection ................................................................................... 31
5.4.2 Analog Output Relay Connection ....................................................................................... 32
5.4.3 Analog Output Actuator Connection ................................................................................. 32
5.5 Digital Outputs .............................................................................................................................. 32
5.5.1 Digital Output Solenoid Valve Connection ....................................................................... 33
5.5.2 Digital Output Resistive Load Connection........................................................................ 33
5.5.3 Digital Output Inductive Load Connection....................................................................... 33
5.6 Triac Outputs................................................................................................................................. 34
6 Conformance Statement .................................................................................................... 35
6.1 Conformance Statement Regarding Implementation of BACnet Protocol .................... 35
6.1.1 BACnet Standardized Device Profile.................................................................................. 35
6.1.2 Supported BACnet Interoperability Building Blocks ...................................................... 36
6.1.3 Supported BACnet Standard Object Types...................................................................... 36
6.1.4 Data Link Layer Option.......................................................................................................... 37
6.1.5 Supported Character Sets.................................................................................................... 37
6.1.6 Supported Application Services.......................................................................................... 37
6.1.7 About COV................................................................................................................................ 37
7 Device Objects....................................................................................................................... 38
7.1 Device BACnet Object Description........................................................................................... 38
7.2 VALID_FRAMES_FOR_US_CNT Property 5101 ........................................................................ 40
7.3 VALID_FRAMES_FOR_NOT_US_CNT Property 5102.............................................................. 40
7.4 ERROR_FRAMES_CNT Property 5103....................................................................................... 40
7.5 TRANSMITTED_FRAMES_CNT Property 5104......................................................................... 40
7.6 UP_TIME Object (Analog Value: 0)............................................................................................. 40
7.7 WATCHDOG Object (Analog Value: 1)...................................................................................... 40
7.8 FIRMWARE VERSION AND MODULE TYPE Property 3030.................................................. 40
7.9 RS485_BIASING Property 3045 ................................................................................................. 42
8 LocalIO Objects ..................................................................................................................... 43
8.1 Universal Input BACnet Objects................................................................................................ 43
8.1.1 UI - Universal Input Object Description (Analog Input: 0-7)......................................... 43
8.1.2 UI CONFIGURATION Object (Multistate Value: 1-8)........................................................ 44
8.1.3 UI RESOLUTION Object (Multistate Value: 9-16)............................................................. 45
8.1.4 UI FILTER Object (Analog Value: 14-21)............................................................................. 46
8.1.5 UI DRY_CONTACT Object (Binary Value: 0-7) ................................................................... 46
8.2 Digital Input BACnet Objects ..................................................................................................... 46

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8.2.1 BI - Digital Input Object Description (Binary Input: 0-11).............................................. 46
8.2.2 BIA COUNTER Object (Accumulator: 0-12)....................................................................... 47
8.2.3 BI COUNTER Object (Analog Value: 2-13) ......................................................................... 47
8.3 Analog Output BACnet Objects................................................................................................. 48
8.3.1 AO - Analog Output Object Description (Analog Output: 0-5)..................................... 48
8.3.2 AO CONFIGURATION Object (Multistate Value: 17-22) ................................................. 49
8.3.3 AO HAND_STATUS Object (Multistate Value: 23-26)...................................................... 50
8.3.4 AO HAND_VALUE Object (Analog Value: 22-25).............................................................. 50
8.4 Digital Output BACnet Objects.................................................................................................. 50
8.4.1 BO - Digital Output Object Description............................................................................. 50
8.4.2 HAND_STATUS Object (Multistate Value: 23-26)............................................................. 52
8.5 Triac Output BACnet Objects .................................................................................................... 52
8.5.1 TO - Triac Output Object Description (Binary Output: 0-3).......................................... 52
8.5.2 TO PWM VALUE - Triac PWM Object Description (Analog Output: 0-3) .................... 54
8.5.3 HAND_STATUS Object (Multistate Value: 23-26)............................................................. 56
8.5.4 TO CONFIGURATION Object (Multistate Value: 17-22) ................................................. 56
8.6 Special Application Modes ......................................................................................................... 57
8.6.1 Special Application Modes for 4I4O-H, 4I4O-H-IP, 4U4O-H, and 4U4O-H-IP .......... 57
8.6.2 INPUT MODE Object (Multistate Value: 27-30)................................................................ 57
8.6.3 MODE TIME Object (Analog Value: 26-29)........................................................................ 61
8.6.4 COMMAND Object (Binary Value: 12-15).......................................................................... 61
8.6.5 BLOCKING Object (Binary Value: 8-11).............................................................................. 61
8.6.6 SETPOINT Object (Analog Value: 30-33)............................................................................ 61
8.6.7 DIFFERENTIAL Object (Analog Value: 34-37).................................................................... 62
9 Web Configuration ............................................................................................................... 63
9.1 Web Server Access....................................................................................................................... 63
9.2 Device Page.................................................................................................................................... 63
9.3 Local I/O Status and Configuration .......................................................................................... 64
9.3.1 Universal Inputs ...................................................................................................................... 64
9.3.2 Digital Inputs............................................................................................................................ 66
9.3.3 Digital Outputs ........................................................................................................................ 66
9.3.4 Analog Outputs ....................................................................................................................... 67
9.4 RS485 Configuration.................................................................................................................... 68
9.5 IP Configuration ............................................................................................................................ 68
9.6 Device Management .................................................................................................................... 71
9.7 Contact............................................................................................................................................ 72
10 List of BACnet Objects.........................................................................................................73

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11 List of Supported Temperature Sensors ........................................................................ 80

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1 Introduction
The MINI and MIX series of I/O modules with RS485 and IP (2 Ethernet) have been
designed for building distributed control systems using MAC36, AAC20, or another
controller. Each module is equipped with the most commonly used types of I/O in
building automation. Depending on the version, the device has 18 or 38 inputs and
outputs, a mix of all types of I/O in one unit. All I/O modules haveBTLandULcertificates.
The modules with RS485 and IP (2 Ethernet) are factory-equipped with the two most
popular open communication protocols: Modbus (ASCII, RTU, TCP/IP) and BACnet (MS/TP,
IP), which are selected using DIP switches. Rotary switches are used to set the module
address, which facilitates and accelerates the process of commissioning the system. Built-
in mini USB allows for the initial configuration of the unit without external power supply.
Built-in Modbus gateway TCP/IP to Modbus ASCII/RTU enables to connect additional
modules/devices that communicate via Modbus RS485.
Thanks to supporting open communication standards I/O modules can be installed in
both new and completed installations, as part of existing BMS. This versatile device will fit
any BMS perfectly.
Figure 1. The MINI and MIX IO modules
This user manual outlines all information specific to using I/O modules in the BACnet
protocol.

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1.1 Revision History
Rev. Date Description
1.0 28 Aug 2015 First edition
1.1 1 Feb 2016 Information about the capacitive load relay added to the
technical specifications.
Information about load triac outputs added to the technical
specifications.
Information about COV added.
New BACnet objects UP_TIME and WATCHDOG.
Universal Inputs: COV support and new feature of flag
OUT_OF_SERVICE added.
Universal Inputs: new objects added: UI_CONFIGRATION,
UI_RESOLUTION, UI_FILTER and UI_DRY CONTACT.
Digital Inputs: COV support and new feature of flag
OUT_OF_SERVICE added.
Digital Inputs: new objects added: BIA_COUNTER, and
BI_COUNTER.
Analog Outputs: COV support and new feature of flags
OUT_OF_SERVICE and STATUS_FLAG added.
Analog Outputs: new objects added: AO_CONFIGURATION,
AO_HAND_STATUS, and AO_HAND_VALUE.
Digital Outputs: COV support and new feature of flag
OUT_OF_SERVICE and STATUS_FLAG added.
Digital Outputs: new object added: HAND_STATUS.
Description of the new MINI module 4x Triac Outputs
added: 4TO-H and 4TO-H-IP.
MINI - 4I40-H and 4I40-H-IP module built-in application:
Change of logic in the Time relay mode. Now the timer
counts from the falling edge (is used to do it from the rising
edge).
MINI - 4I40-H and 4I40-H-IP Module built-in application:
new objects added MODE_TIME, COMMAND, and
BLOCKING.
Shortlist of BACnet objects added.
Tables with PT1000 and NI1000 updated with more
accurate data, due to new FW measuring the temperature
at these sensors with 0.1°C accuracy.
1.2 4 Jan 2017 New HVAC functions Heating and Cooling in 4U4O based
on output thermostatic control with a setpoint and
differential value setting;
New input mode added for 4I4O: Time Relay NC [ms], Time
Relay NO and NC in seconds, Input Forwarding;
New input mode added for 4U4O: Ordinary IO, Monostable
Relay, Bistable Relay, Time Relay NO and NC [ms], Time
Relay NO and NC in seconds, Input Forwarding, Heating,
Cooling with corresponding BACnet objects and Modbus
registers;
Output for resetting to default after input mode change in
4U4O and 4I4O;
Improved BACnet COV Increment now can have values with
the resolution of 0.1;
BACnet COV Increment access (read/write) through USB
added;
Power Led added, flashing when the I/O watchdog is
triggered;

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Rev. Date Description
I/O watchdog reset after read/write registers through USB
modified;
Sensors added for the immediate detection of short circuit
and disconnection, regardless of filter settings on universal
inputs;
Fixed bug with Stop bits, it was always 1.
1.3 16 May 2017 Hardware Version info added on the main tab on the web
page and in the Modbus register
new action in the Modbus register no 0 – enter the
bootloader
RS485 biasing control added for MINI IP modules with
hardware version >= 2.0
new Device Object properties added: Version type, Baud
rate, User Baud rate, IP address, Subnet mask, Default
Gateway, HTTP port, and UDP port
www page: RS485 Biasing Resistors activating option
(appears only in MINI modules with hardware >= 2.0)
www page fixed: COV increment always in a format with one
decimal place
module names on the web page the corrected (added -H
for all modules with hand operation switches)
1.4 7 Dec 2017 Firmware Version 6.0 released with BACnet certification
fixed out of service flags in AO, BO and TO
fixed overridden flags in AO, BO and TO
fixed bug with number of counters for Binary input object
(now variable is 32 bit)
changed AO-1, BO-1, TO-1 HAND_STATUS Access to read-
only
changed resistance table for 2.2K3A1 sensor
1.5 5 Oct 2018 Corrections of typing errors in the text
Added imperial unit of measure
MINI and MIX modules earned UL recognized component
mark
1.6 19 Feb 2020 New temperature sensors implemented in Celsius and
Fahrenheit degrees
Improved filtering on UI
Device Name (Object Name) in BACnet is saved in EEPROM
memory
Fixed one record in sensor 30k6A1 table –resistance 60713
to 80713 (5°C)
“Send I Am” message is not sent if BACnet is turned off
1.7 13 Oct 2020 Improved functionality of the BBMD: new default IP
address, registering to the BBMD server is disabled if the
BBMD IP address is left default;
Introduced an option to disable web server access by
changing the HTTP port to 0;
Corrected summary table for all modules;
Updated information about biasing resistors in MIX
modules;
General improvements and bugfixes.

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Rev. Date Description
1.8 25 May 2022 Rebranded
Table 1. Revision history

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2 Safety Rules
Improper wiring of the product can damage it and lead to other hazards. Make sure
that the product has been correctly wired before turning the power on.
Before wiring or removing/mounting the product, make 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 only within the operating ranges recommended in the specification
(temperature, humidity, voltage, shock, mounting direction, atmosphere, etc.). Failure
to do so might cause a fire or faulty operation.
Firmly tighten the wires to the terminal. Failure to do so might cause a fire.
Avoid installing the product in close proximity to high-power electrical devices and
cables, inductive loads, and switching devices. Proximity of such objects may cause an
uncontrolled interference, resulting in an instable operation of the product.
Proper arrangement of the power and signal cabling affects the operation of the entire
control system. Avoid laying the power and signal wiring in parallel cable trays. It can
cause interferences in monitored and control signals.
It is recommended to power controllers/modules with AC/DC power suppliers. They
provide better and more stable insulation for devices compared to AC/AC transformer
systems, which transmit disturbances and transient phenomena like surges and bursts
to devices. They also isolate products from inductive phenomena from other
transformers and loads.
Power supply systems for the product should be protected by external devices limiting
overvoltage and effects of lightning discharges.
Avoid powering the product and its controlled/monitored devices, especially high
power and inductive loads, from a single power source. Powering devices from a single
power source causes a risk of introducing disturbances from the loads to the control
devices.
If an AC/AC transformer is used to supply control devices, it is strongly recommended
to use a maximum 100 VA Class 2 transformer to avoid unwanted inductive effects,
which are dangerous for devices.
Long monitoring and control lines may cause loops in connection with the shared
power supply, causing disturbances in the operation of devices, including external
communication. It is recommended to use galvanic separators.
To protect signal and communication lines against external electromagnetic
interferences, use properly grounded shielded cables and ferrite beads.
Switching the digital output relays of large (exceeding specification) inductive loads can
cause interference pulses to the electronics installed inside the product. Therefore, it
is recommended to use external relays/contactors, etc. to switch such loads. The use
of controllers with triac outputs also limits similar overvoltage phenomena.
Many cases of disturbances and overvoltage in control systems are generated by
switched, inductive loads supplied by alternating mains voltage (AC 120/230 V). If they
do not have appropriate built-in noise reduction circuits, it is recommended to use
external circuits such as snubbers, varistors, or protection diodes to limit these effects.

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2.1 Wiring
In most cases, I/O modules will be installed in an enclosure along with the other devices,
which generate electromagnetic radiation. Relays, contactors, transformers, motor
invertors, etc., are examples of such devices. Radiation can induce electrical noise into
both power and signal lines, as well as direct radiation into the module. Whether or not
the iSMA modules are immune to such effects, the interferences must be suppressed at
their source if possible to ensure the proper functioning of the entire system.
Appropriate grounding, shielding and other protective steps should be taken at the
installation stage to prevent these effects. It is recommended to at least follow the rules
below:
Line power cables must be routed with spatial separation from signal and data
transmission cables.
Analog and digital signal cables should also be separated.
It is recommended to use shielded cables for analog signals, cable shields should not
be interrupted by intermediate terminals.
The shielding should be earthed directly after the cable enters the cabinet.
It is recommended to install interference suppressors when switching inductive loads
(e.g., coils of contactors, relays, solenoid valves). RC snubbers or varistors are suitable for
AC voltage and freewheeling diodes for DC voltage loads. The suppressing elements must
be connected as close to the coil as possible.
2.2 EN 60730-1 Power Supply Considerations
Electrical safety in the building automation and control systems is essentially based on
the use of extra-low voltage which is strictly separated from the mains voltage. This low
voltage is either SELV or PELV according to EN 60730-1.
Protection against electric shock is ensured by the following measures:
Limitation of voltage (low voltage AC/DC 24V supply, either SELV or PELV)
Protective-separation of the SELV-system from all circuits other than SELV and
PELV
Simple-separation of the SELV-system from other SELV-systems, from PELV-
systems and earth
Field devices such as sensors, status contacts, and actuators connected to the low-
voltage inputs and outputs of I/O modules must comply with the requirements for
SELV or PELV. The interfaces of field devices and other systems must also satisfy SELV
or PELV requirements.
If the supply of SELV or PELV circuits is obtained from supply mains of higher voltages,
it shall be provided by safety transformer or a converter designed for continuous
operation to supply SELV or PELV circuits.
2.3 FCC Compliance Note
Note: This equipment has been tested and found to comply with the limits for a Class B
digital device, pursuant to part 15 of the FCC Rules. These limits are designed to provide
reasonable protection against harmful interference in a residential installation. This
equipment generates, uses and can radiate radio frequency energy and, if not installed
and used in accordance with the instructions, may cause harmful interference to radio
communications. However, there is no guarantee that interference will not occur in a

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particular installation. If this equipment does cause harmful interference to radio or
television reception, which can be determined by turning the equipment off and on, the
user is encouraged to try to correct the interference by one or more of the following
measures:
Reorient or relocate the receiving antenna;
Increase the separation between the equipment and receiver;
Connect the equipment into an outlet on a circuit different from that to which the
receiver is connected;
Consult the dealer or an experienced radio/TV technician for help.

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3 Technical Specification
Power supply Voltage 24 V AC/DC ± 20%
Power consumption
Module type At 24 V DC At 24 V AC
8I 0.4 W 0.6 VA
8I-IP 1.4 W 2.1 VA
8U 0.5 W 0.8 VA
8U-IP 1.5 W 2.3 VA
4I4O-H 1.2 W 1.8 VA
4I4O-H-IP 2.2 W 3.3 VA
4U4O-H 1.2 W 1.8 VA
4U4O-H-IP 2.2 W 3.3 VA
4U4A-H 2.2 W 3.3 VA
4U4A-H-IP 3.2 W 4.8 VA
4O-H 1.6 W 2.4 VA
4O-H-IP 2.6 W 3.9 VA
4TO-H 1.0 W 1.5 VA
4TO-H-IP 2.0 W 3.0 VA
MIX18 3.0 W 4.5 VA
MIX18-IP 4.4 W 6.6 VA
MIX38 5.0 W 7.5 VA
MIX38-IP 7.4 W 11.1 VA
Universal Inputs Temperature input Measurement with RTDS attached
Accuracy ± 0.1˚C
For PT1000 and NI1000 sensors use 16-bit resolution
Voltage input Voltage measurement in 0-10 V DC range
Input impedance 100 kΩ
Measurement accuracy ±0.1%
Measurement resolution 3 mV at 12-bit and 1 mV at 16-
bit

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Current input Current measurement in 0 - 20 mA range
Required external resistor 200 Ω
Measurement accuracy ±1.1%
Measurement resolution 15 µA at 12-bit and 5 µA at 16-
bit
Resistive input Measurement of resistance in 0 to 1000 kΩ range
Measurement resolution for 20 kΩ load 20 Ω at 12-bit
and 1 Ω at 16-bit
Measurement resolution for PT1000 and NI1000 0.1 Ω at
16-bit
Resistance measurement
method
Voltage divider
Dry contact input Output current ~1 mA
Measurement resolution 12-bit (default) or 16-bits
Processing time 10 ms/channel at 12-bits
140 ms/channel at 16-bits
Digital Inputs Type Dry contact
Max. input frequency 100 Hz saved in EEPROM memory
Analog Outputs Voltage range 0-10 V DC
Max. load current 20 mA, total 60 mA load current for all outputs for MIX18,
MIX18-IP, MIX38, MIX38-IP modules
Resolution 12-bit
Accuracy ± 0.5%
Digital Outputs
(relays)
Contact material AgSnO2
UL compliant ratings Maximum ratings
Resistive load AC1 3 A at 24 V AC
3 A at 30 V DC
3 A at 230 V AC
3 A at 30 V DC
Inductive load AC3 8 VA at 24 V AC
30 W at 30 V DC
75 VA at 230 V AC
30 W at 30 V DC
Capacitive load 50 W at LED + PS 230 VAC
100 W at fluorescent lamps
with electronic ballast
75 W at CFL Compact
fluorescent lamp

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Digital Outputs
(relays)
4O-H and 4O-H-IP
Contact material AgSnO2
UL compliant ratings Maximum ratings
Resistive load AC1 8 A at 230 V AC
8 A at 30 V DC
8 A at 230 V AC
8 A at 30 V DC
Inductive load AC3 37 VA at 230 V AC
90 W at 30 V DC
360 VA at 230 V AC
90 W at 30 V DC
Capacitive load 180 W at CFL Compact
fluorescent lamp
120 W at LED + PS 230 V AC
240 W at fluorescent lamps
with electronic ballast
Triac Outputs Continuous load per channel 0.5 A at 20 V AC up to max. 250 V AC
Peak load per channel 1.5 A at 20 V AC up to max. 250 V AC (30 s)
Gate Control Zero crossing turn ON
Frequency Range 47 to 63 Hz
Snubber Snubberless triac
RS485 Interface RS485 Up to 128 devices
Communication protocols Modbus RTU, Modbus ASCII,
or BACnet set by switch
Baud rate From 2400 to 115200 set by switch
Address 0 to 99 set by switch
Ethernet MIX18-IP, MIX38-IP
2 Fast Ethernet Switch mode
Baud rate 10/100 Mb/s
8I-IP, 8U-IP, 4I4O-H-IP, 4U4O-H-IP, 4U4A-H-IP, 4O-H-IP, TO-H-IP
Fast Ethernet IP interface
Baud rate 10/100 Mb/s
USB USB Mini USB 2.0
Ingress protection IP IP40
Temperature Storage -40˚C to +85˚C (-40°F to 185°F)
Operating -10˚C to +50˚C (14°F to 122°F)

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Humidity Relative 5% to 95%
Connectors Type Removable
Maximum cable size 2.5 mm2 (18–12 AWG)
Maximum tightening torque 0.35 Nm
Dimensions MIX18, MIX18-IP
Width 110 mm (4.331 in)
Length 88 mm (3.4646 in)
Height 62 mm (2.441 in)
MIX38, MIX38-IP
Width 110 mm (4.331 in)
Length 160 mm (6.2993 in)
Height 62 mm (2.441 in)
MINI Series
Width 110 mm (4.331 in)
Length 37 mm (1.457 in)
Height 62 mm (2.441 in)
Table 2. Technical specification
3.1 Summary Table for All Modules
Module
Type
UI DI A
O
DO T
O
Modbus
RTU /
ASCII
Modbus
TCP/IP
BACnet
MS/TP
BACnet IP
4I4O-H 4 4   
4I4O-H-IP 4 4   
4O-H 4 (NC/NO-8A) 
4O-H-IP 4 (NC/NO-8A)   
4U4A-H 4 4 
4U4A-H-IP 4 4     

iSMA-B-MINI/MIX BACnet User Manual
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DMP261en | 1st Issue rev. 8 | 05/2022
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4U4O-H 4 4   
4U4O-H-
IP
4 4   
8I 8
8I-IP 8
8U 8
8U-IP 8
4TO-H 4
4TO-H-IP 4
MIX18 5 5 4 4 
MIX18-IP 5 5 4 4 
MIX38 8 12 6 12 
MIX38-IP 8 12 6 12   
RS485
slave
Modbus
gateway IP/
RS485
(works only
as a master
on RS485
network)
RS485
master
slave
Modbus
gateway IP/
RS485
(works only
as a master
on RS485
network)
Table 3. Summary table for all modules

iSMA-B-MINI/MIX BACnet User Manual
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DMP261en | 1st Issue rev. 8 | 05/2022
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4 Hardware Specification
4.1 Dimensions
4.1.1 MINI Series Dimensions
Figure 2. The MINI series dimensions
4.1.2 MIX18 Series Dimensions
Figure 3. The MIX18 series dimensions
4.1.3 MIX38 Series Dimensions
Figure 4. The MIX38 series dimensions

iSMA-B-MINI/MIX BACnet User Manual
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DMP261en | 1st Issue rev. 8 | 05/2022
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4.2 Power Supply Connection
Figure 5. AC power supply connection
Figure 6. DC power supply connection
4.3 LED Indicators
4.3.1 MIX Series Front Panels
MIX18 Top Panels
Figure 7. The MIX18 top panel
Figure 8. The MIX18-IP top panel

iSMA-B-MINI/MIX BACnet User Manual
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DMP261en | 1st Issue rev. 8 | 05/2022
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MIX38 Top Panels
Figure 9. The MIX38 top panel
Figure 10. The MIX38-IP top panel
4.3.2 MINI Series Front Panels
MINI 8I and 8I-IP Top Panels
Figure 11. The 8I top panel
Figure 12. The 8I-IP top panel
The MINI 8U and 8U-IP Top Panels
Figure 13. The 8U top panel
Figure 14. The 8U-IP top panel