Elseta IOMOD HT, Руководство пользователя

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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
1
st
Relay active mode Yes Yes
1
st
Relay active range Yes Yes
2
nd
Relay active mode Yes Yes
2
nd
Relay active range Yes Yes
Default Settings Yes No
Introduction - Features - Device
working information - Supported
MODBUS functions