Ascon Tecnologic - TRH04 - USER MANUAL - PAG. 2
3.3
Connections
General notes on electrical connections
• The probe cables must be kept separated from high
power voltage wiring;
• If shielded cables are used, the protection shield must be
connected to ground at one side only.
3.3.1
Electrical wiring
Colour
Connection
Red
Power supply - Positive pole
Green
Power supply - Negative pole
Yellow
Terminal A+ RS485
Blue
Terminal B- RS485
3.4
Communication protocol
The product uses the standard RS485 MODBUS-RTU proto-
col format, all operating and response commands are made
up of hexadecimal data.
When the sensor is shipped, the RS485 communication set-
tings are:
• Modbus Address: 1;
• Baud rate: 9600
• Data bits: 8;
• Parity: n (no parity);
• Bit di stop: 1.
3.4.1
Variables Map
Address
Descrizione
no. of
decimals
R/W
Dec. Hex.
0
00 Measured Temperature
2
R
1
01 Measured Humidity
2
R
102
066 Modbus Address
0
R/W
103
067
Baud rate
1 2400
2 4800
3 9600
4 19200
5 38400
6 115200
0
R/W
107 06B Temperature offset (-10 ÷ +10)
2
R/W
108 06C Humidity offset (-10 ÷ +10)
2
R/W
4. PROBLEMS AND MAINTENANCE
4.1
Cleaning
We recommend to clean the instrument with a slightly wet
cloth using water and not abrasive cleaners or solvents only.
Should it be necessary to remove the sensor, avoid to me-
chanical stress it and in particular avoid touching the humid-
ity sensor.
4.2
Disposal
The appliance (or the product) must be
disposed of separately in compliance
with the local standards in force on
waste disposal.
5. WARRANTY AND REPAIRS
The instrument is under warranty against manufacturing
flaws or faulty material, that are found within 18 months from
delivery date. The warranty is limited to repairs or to the
replacement of the instrument.
The eventual opening of the housing, the violation of the instru-
ment or the improper use and installation of the product will
bring about the immediate withdrawal of the warranty effects.
In the event of a faulty instrument, either within the period of
warranty, or further to its expiry, please contact our sales de-
partment to obtain authorisation for sending the instrument
to our company.
The faulty product must be shipped to Ascon Tecnologic with
a detailed description of the faults found, without any fees or
charge for Ascon Tecnologic, except in the event of alterna-
tive agreements.
6. TEHNICAL DATA
6.1
Technical characteristics
Temperature range:
-30 ÷ 80°C;
Temperature accuracy:
±0.5°C @ 25°C;
Humidity range:
0 ÷ 100% RH;
Humidity accuracy:
±3% RH @ 25°C;
Communication interface:
RS 485;
Default data format:
9600, 8, n, 1;
Power supply:
6 ÷ 24 VDC;
Operating temperature
-40 ÷ 80°C;
Operating Humidity
5 ÷ 90% RH;
Standard connection cable length:
1 m.
