IOMOD HT User Manual.

Copyrights and trademarks

Elseta are UAB Aedilis trademark that identifies of UAB Aedilis manufactured. All of the product and the user manual of the right to ownership of the copyright belongs to "Aedilis. These documents and the product properties can not be changed without company Aedilis' knowledge and written consent. User manual may not be modified without company Aedilis' notice.

Declaration of Conformity

(in accordance with ISO / IEC Guide 22 and EN Section 45014) Manufacturer: UAB Aedilis Address of the manufacturer L. Zamenhofo st. 5 LT Vilnius, Lithuania

We claim that: The device IOMOD HT

Conforms to the following standards: EMC: Radiation EN 55022 (Class A) 1 emitted radiation (30-1000MHz) Second radiation conductors (0.15-30MHz) EN 50082-1 immunity test 1 IEC 801-3: Radio-frequency electromagnetic field 2 IEC 801-2: Electrostatic discharge. 3 IEC 801-4: Quick periodic electrostatic discharges

Additional information: "The device complies with the Low Voltage Directive 73/23 / EEC and EMC Directive 89/336 / EEC. Device assembly complies with the RoHS ROHS Directive.

Manufacturer contact: Equipment quality controller UAB Aedilis Address: L. Zamenhofo g. 5, LT 06332, Vilnius, Lithuania Phone: +370 5 2742707 E-mail. Email: support@elseta.com

Safety Requirements

This equipment Operating notes, which must be met for your personal safety, as well as to avoid damage to the equipment. These notes are marked with a warning triangle symbol and the various degrees of risk of falling within signs. All work related to electronic systems design, installation, commissioning, adjustment and maintenance should be carried out in accordance with the safety requirements.

Equipment's Manual Uses Symbols

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Danger - important notice, which may affect the safety of the user or device.

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Attention - notice on possible problems that may arise in individual cases.

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Information Notice - the information that is useful advice or special places.

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Warning of the danger. The work may be performed only by a qualified professional. Equipment installation, commissioning and maintenance may only be performed by a qualified professional. If the safety notes in this manual, the term refers to persons qualified specialists authorized to perform commissioning, grounding and labeling devices, systems and circuits. The person must: Be aware of occupational safety in the workplace. Need to understand the equipment components. Electrical equipment. Have the knowledge and skills to identify a component beneath the voltage.

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To maintain the equipment necessary to always turn off the power supply before installing or dismantling works. It must be in mind that even though alone equipment, but can have a common ground connection. Always before connecting the power supply, cables and interconnect components must be inspected.

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This product can not be implemented, or resold to install in areas that are high-security as nuclear power plants, aircraft navigation, military equipment, transport traffic in management. In areas where equipment failure can result in of nature and human injury.

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Do not operate the equipment in extreme weather conditions, as they may affect the operation of the equipment.

Introduction - Features - Device working information - Supported MODBUS functions

Introduction


IOMOD HT is used for temperature and humidity data monitoring and relay control over Modbus. Device is also capable of switching relays automatically (thermostat function) as configured.

 

 

Features


• Temperature and humidity sense with ±0,1 % and ±0,1 °C accuracy;
• Temperature sensing range from -10 up to 60 °C;
• Humidity sensing range from 0 to 100%;
• Two Relays which can be configured to turn on automatically on humidity or temperature triggers (only Advanced version);
• Relays automation configuration over USB or Modbus;
• Configurable Modbus settings, such as Slave ID, Baudrate, Parity and stop bits, RS485 terminating resistor, etc.
• Firmware Upgrade over USB;
• Two connectors for power supply and for RS485, for easier device connection on one line;

 

Device working information


IOMOD uses Modbus (RTU) protocol over RS485 connection, which can be used with cable length up to 1500 meters and connect up to 30 devices on one line. Default Modbus settings are: 9600 baudrate, 8N1, Slave address - 1.
To read temperature and humidity, user can use device with default settings without configuring it. To read humidity, send 04 Modbus command (Read Input Registers) with resolution of first register (0). Returned value will be measured in % and will be multiplied by 10, to show one decimal place. To read temperature, send 04 (Read Input Registers) with resolution of second register (1).
Returned value will be measured in °C and will be multiplied by 10. To enable thermostat function, user can configure device over USB or over MODBUS. Configurable options shown in table below.

 

CONFIGURABLE OPTIONS OVER USB OVER MODBUS
Slave Address Yes No
Baudrate Yes No
Data, Stop and Parity bits Yes No
RS485 Terminating Resistor Yes No
1st Relay active mode Yes Yes
1st Relay active range Yes Yes
2nd Relay active mode Yes Yes
2nd Relay active range Yes Yes
Default Settings Yes No

 

Supported MODBUS functions


01 (0x01) Read Coils Status
Reads status of relays (Off or On). IOMOD HT has 2 relays on addresses 6 and 7 (Only for IOMOD
HT Advanced).

03 (0x03) Read Holding Registers
Reads current configuration of relays. Address 2 – Active Mode for 1st relay ( 0 – disabled, 1 - humidity or 2 - temperature); Address 3 – Lower Active value (minimal value for relays to turn on) for 1st relay; Address 4 – Upper Active value (maximum value for relays to keep turned on. If parameter reaches threshold bigger than this value, relay is turned off) for 1st relay. Address 5 – Active Mode for 2nd relay (humidity or temperature); Address 6 – Lower Active value (minimal value for relays to turn on) for 2nd relay; Address 7 – Upper Active value (maximum value for relays to keep turned on. If parameter reaches threshold bigger than this value, relay is turned off) for 2nd relay.

04 (0x04) Read Input Registers
Reads current Humidity and Temperature status. Address 0 – Humidity; Value is multiplied by 10 to show one decimal place. For example: 23.3 °C will be shown as 233; 50.0 % will be shown as 500 in the Registers.

05 (0x05) Write Single Coil
(Only for IOMOD HT Advanced). Sets single relay On or Off. 1 Relay address – 6th register; 2 relay – 7th register.

06 (0x06) Preset Single Register
Sets single configuration (Only for IOMOD HT Advanced). Address 2 – Active Mode for 1 relay: 0- disabled; 1 - humidity or 2 - temperature; Address 3 – Lower Active value (minimal value for relays to turn on) for 1 relay; Address 4 – Upper Active value (maximum value for relays to keep turned on. If parameter reaches threshold bigger than this value, relay is turned off) for 1 relay. Integer; Address 5 – Active Mode for 2 relay: 0- disabled; 1 - humidity or 2 - temperature; Address 6 – Lower Active value (minimal value for relays to turn on) for 2 relay; Address 7 – Upper Active value (maximum value for relays to keep turned on. If parameter reaches threshold bigger than this value, relay is turned off) for 2 relay. 

Technical Information

System

1. Dimensions 26 (H) x 71 (W) x 71 (L), mm
2. Case  ABS, white
3. Working environment Indoors
4. Working temperature -20 ÷ +70°C
5. Recommended operating conditions 5 – 60°C and 20 – 80%RH;
6. Configuration USB or Modbus
7. Firmware upgrade USB – mass storage device

 

  Electrical Characteristics Basic Advanced
8. Termination Resistor Selectable 120Ω Selectable 120Ω
9. Power supply 12-24VDC, 8mA (nominal); 5-33VDC (full range) 24VDC, 25mA (nominal); 18-27VDC (full range)
10. Relays - 2 (Normally Open);
  Relay specifications Basic Advanced
12. Resistive load (cosφ=1) - 5 A at 250 VAC, 5 A at 30 VDC
13. Inductive load (cosφ=0.4, L/R=7ms) - 2 A at 250 VAC, 2 A at 30 VDC
14. Max. switching power - 1,250 VA, 150 W

 

Device connection

IOMOD HT has integrated 120Ω termination resistor which can be enabled or disabled over USB configuration. It is recommended to use termination at each end of the RS485 cable. See typical connection diagram on Fig. 5.1.

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Fig. 5.1.

IOMOD 8DI8DO has 1/8 Unit load receiver which allows to have up to 256 units on line (compared to standard 32 units). To reduce reflections, keep the stubs (cable distance from main RS485 bus line) as short as possible when connecting device. Figure 5.2 shows explanation on device connection.

Screenshot_14.pngFig. 5.2

 

Configuration over USB

a. Driver installation 


Device requires USB drivers to work as virtual com port. First-time connection between device and computer could result in “Device driver software was not successfully installed” error.

image-1623924307494.pngFig. 6.1

User then manually installs drivers by selecting downloaded driver folder:
Go to Control Panel -> Device Manager;
Select failed device;
Press “Update driver software”; following screen should appear:

image-1623924392759.pngFig. 6.2

 

Select “x86” driver for 32bit machine, or x64 for 64bit machine. If not sure, select root folder (folder in which x64 and x86 lays inside).