TCG140_R1.1 – May 2018
Page 24
7.3.
Services
7.3.1.
Modbus
7.3.1.1.
MODBUS RTU communication setup
TCW210-TH supports MODBUS RTU over RS-485 interface. All sensors connected to this
interface should work with the same communication settings.
By default, TCW210-TH works with the standard for MODBUS RTU settings – 19200, E, 1.
7.3.1.2.
MODBUS RTU sensors
TCG140 supports up to eight sensors. They can be connected to both interfaces in a random
ratio. By default, the number of MODBUS RTU sensors are 8.
The 1-Wire sensors are shown always on top of the table. Their temperature and humidity
register addresses, multipliers, data type and data order can’t be edited.
Before to add MODBUS RTU sensors, the user should take care of their address setting. It is
not allowed to use two sensors with the same address. It is recommended to scan for new
sensors before to make any changes.
TCG140 supports Teracom and third-party MODBUS RTU sensors.
Teracom sensors are with known register addresses and they can’t be edited.
For the third-party sensors, appropriate register addresses should be set. It is possible to
change the multiplier, data order and data type for these sensors. Float and signed integer,
with a multiplier, formats are supported.
Содержание TCG140
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