Teracom TST300v2 User manual

www.teracomsystems.com
TST300v2
Modbus RTU temperature sensor
Version 1.6 / December 2018
USER MANUAL

Page 2 TST300v2_R1.6 – December 2018
1. Short descripon
TST300v2 (successor of TST300) is a high accuracy temperature sensor with an RS-485
interface. The device doesn’t need external power supply, it is powered through the interface.
The temperature sensor integrates a band-gap temperature sensor element plus signals
processing and provides a fully calibrated digital output. The temperature sensors are factory-
calibrated. The calibraon data is stored in the non-volale memory. This ensures fully
interchangeable of the sensors without any extra eorts.
The sensor is delivered with one meter standard patch cable with RJ45 connectors. A 19” rack
mount kit can be ordered separately.
2. Features
• RS-485 interface carrying up to 32 nods;
• LED indicator for status of communication;
• Changeable bitrate and another communication parameters;
• Firmware update via the interface.
3. Applicaons
• Server room and data centers temperature monitoring and logging.
• High precision temperature monitoring and logging for food and drug storages.
• Environmental quality monitoring and assessment.
• Temperature monitoring in building management systems.
4. Specicaons
The device has following specicaons:
• Physical characteristics
Dimensions: 85 x 35.1 x 23.5 mm
Weight: 40 g
• Environmental limits
Operating temperature range: -20 to 60°C
Operating relative humidity range: 5 to 85% (non-condensing)
Storage temperature range: -20 to 60°C
Storage relative humidity range: 5 to 85% (non-condensing)
Ingress protection: IP20
• Power requirements
Input Voltage: 4 to 5.5 VDC (from the bus)
Input Current: 2 mA
• Temperature measurements
Accuracy (min): ±0.13 °C (in +20 to +60°C range)
Accuracy (max): ±0.25 °C (in -20 to +60°C range)
Resolution: 0.1 °C
• Warranty
Warranty period: 3 years

TST300v2_R1.6 – December 2018 Page 3
5. Pinout
Corresponding
Pin Descripon UTP wires color
1 not connected (most right) Orange/White Tracer
2 not connected Orange
3 not connected Green/White Tracer
4 Line B- Blue
5 Line A+ Blue/White Tracer
6 not connected Green
7 +VDD Brown/White Tracer
8 GND Brown
6. Installaon
A daisy-chained (linear) topology for mulple sensors should be used. UTP/FTP cables with
RJ-45 connectors are used for interconnecon. The popular ANSI/TIA/EIA T568B wiring is used.
Standard patch LAN cables are recommended.
7. Installaon ps
The locaon and the mounng posion of sensors has a direct eect on the accuracy of moni-
toring the room humidity and temperature. The ps below will ensure good measuring results:
• Sensor shall be installed about 1.2-1.4 m above the floor;
• Sensor should not be installed next to windows to avoid solar radiation;
• Sensors shall be installed in a place with sufficient air circulation;
• Sensors shall be wall mounted with vent holes up/down to ensure air circulation.
8. Status indicator
The status of the device is shown by single LED, located on the front panel:
• If the LED blinks on period of 1 second, sensor works properly;
• If the LED blinks on period of 3 seconds, there isn‘t communication with the
controller;
• If LED doesn‘t blink, there isn‘t power supply.
Aenon:
The last sensor in the chain should have a terminator installed on the free RJ45 socket.
TST300v2 TST300v2
TCW210-TH

Page 4 TST300v2_R1.6 – December 2018
9. Factory default sengs
Disconnect the sensor from the bus (switch o the power supply).
Press and hold “cong” buon. Don’t release the buon, connecng the sensor to the bus
(switch on the power supply).
The “status” LED will be ON for 3 seconds and aer this will ash for 7 seconds. Aer the 10-th
second the LED will be ON.
Release the buon. The sensor will restart with factory default sengs.
10. Firmware update
The rmware of the sensor can be updated with Teracom controller which supports
MODBUS RTU or MBRTU-Cong soware. For more details ask your dealer.
11. Modbus address table
Register name R/W FC
PDU
Address
(Decimal)
Logical
address
(Decimal)
Oset
(Decimal Data size Default Valid values
RS-485 address R/W 03/06 10 40011 40001 16-bit Integer 1 1-247
Baud rate * R/W 03/06 11 40012 40001 16-bit Integer 19200 2400, 4800, 9600,
19200, 38400, 57600
Parity, data, stop
bits *
R/W 03/06 12 40013 40001 16-bit Integer 1 1=E81, 2=O81, 3=N81
Bytes order R/W 03/06 13 40014 40001 16-bit Integer 1 1= MSW, LSW
2= LSW, MSW
Temperature
(Measured)
R 03 100 40101 40001 32-bit Float
Temperature
Dimension
R 03 104 40105 40001 4 bytes UTF-8
ID 64-49 bits R 03 108 40109 40001 16-bit Integer
ID 48-33 bits R 03 109 40110 40001 16-bit Integer
ID 32-17 bits R 03 110 40111 40001 16-bit Integer
ID 16-1 bits R 03 111 40112 40001 16-bit Integer
Sub-family number R 03 112 40113 40001 16-bit Integer
FW version R 03 113 40114 40001 16-bit Integer
Vendor URL R 03 300 40301 40001 64 bytes UTF-8 teracomsystems.com
Test value (oang
point, MSW rst)
R 03 332 40333 40001 32-bit Float -9.9(0xC11E6666)
LSW - Least signicant word (bits 15 … 0);
MSW - Most signicant word (bits 31 … 16)
PDU address - Actual address bytes used in a Modbus Protocol Data unit
A “NaN” value is returned for unavailable oang-point values (e.g. in case of measurement error)
* The sengs will take eect aer restart of the sensor by power on reset.
12. Recycling
Recycle all applicable material. Do not dispose of
with regular household refuse.