AGROWTEK HXT SDI Sensor Hub Instruction Manual
- October 30, 2023
- AGROWTEK
Table of Contents
INSTRUCTION MANUAL
HXT
SDI Sensor Hub for Teros 12 Sensors
Specifications
| Input Power | W @ 12-24Vdc Class II / Limited Energy Power Supply |
|---|---|
| Compatible Sensors | Teros 12 |
| Protocols | SDI-12 |
| Number of Sensors | 8 |
| Sensor Addressing | Automatic |
| Controller Interface | RJ-45 GrowNET™, MODBUS |
| Sensor Connection | 3.5mm TRS |
KEEP THESE INSTRUCTIONS
Introduction
HXT sensor hubs connect Teros 12 moisture sensors manufacturer by Aroya to
Aggrotech GrowControl™ GCX control systems or to industrial PLC systems via
MODBUS RTU.
The HXT
hub recieves power from the RJ-45 connection to operate the sensors and hub.
Sensors are automatically detected when they are connected and no special
addressing is required on the moisture sensors.
Any Teros 12 sensor with 3.5mm stereo connection can be connected to the HXT
sensor hub.
Installation Instructions
Recommended installation location is above plants and benches to avoid water damage to the hub connectors and circuit board. Locate the hub centrally to where sensors will be installed. Consider rolling bench locations and sensor cable extensions (available from Aggrotech) if necessary.
- Do not install below misters, foggers, humidifi ers and other water equipment.
- Avoid locations with condensation.
- Prevent condensation from entering the housing; locate the hub above cable runs.
**NOTICE
GrowNET™ ports use standard RJ-45 connections but are NOT compatible the
Ethernet network equipment.
Do not connect GrowNET™ ports to Ethernet ports or network switch gear.
DIELECTRIC GREASE**
Dielectric grease is recommended on RJ-45 GrowNET™ connections when used in
humid environments.
Place a small amount of grease onto the RJ-45 plug contacts before inserting
into the GrowNET™ port.
Non-conductive grease is designed to prevent corrosion from moisture in
electrical connectors.
- Loctite LB 8423
- Dupont Molykote 4/5
- CRC 05105 Di-Electric Grease
- Super Lube 91016 Silicone Dielectric Grease
- Other Silicone or Lithium based insulating grease
External Features
- GrowNET™ Port RJ-45 connector port for power & data.
- TRS Port 3.5mm TRS (stereo) connector port for Teros 12 SDI sensors.
- Mounting Flange For wall mounting.
- Power LED Red LED indicates the HXT hub has power from the GrowNET™ connection.
Dimensions
Mounting holes: dia. 0.201”
Connections
Teros 12 sensors can be supplied with either a TRS (3.5mm stereo) connection
from
Aggrotech or a M8 (circular 4-pin) connection from Aroya.
If the Teros 12 sensors have M8 connectors, an adapter cable is required to
convert from the M8 connection to TRS.
TRS Connection
TRS type connectors simply plug into the TRS jacks on the HXT hub. If longer
leads are required, simply connect in TRS extension cables for the length
required (available from Agrowtek.)
M8 Connection
M8 connections are round with four pins. To connect M8 type sensors to the HXT
hub, an adapter cable is required. Agrowtek manufactures the CAB-T12-M8 cable
or the Aroya Solus adapter cable can also be used.
Connection to GrowControl™ GCX
All GrowNET™ devices are connected using standard CAT5 or CAT6 Ethernet cable
with RJ-45 connections.
Devices can be connected directly to the GrowNET™ ports on the bottom of the
controller, or through HX8 GrowNET™ hubs. It is typical to simplify cabling by
locating hubs centrally in hall ways and rooms allowing single runs from an
8-port device hub back to a central hub or back to the controller.
Refer to the GCX controller manual for details on adding the device to the
system.
GrowNET™ Hubs
HX8 GrowNET ™ hubs expand a single port into eight more ports.
Hubs can be daisy-chained to form a network of up to 100 devices per GrowNET™
bus. Individually buff ered port transcievers provide excellent signal
integrity and extended communication strength and range.
Hubs provide up to 1A of power for operating sensors and most relays directly
over the CAT5 cable. A DC jack on the hub provides 24Vdc power to the ports
from the included wall power supply. A terminal block power option is also
available.
Connection to USB AgrowLINK
Agrowtek’s HXT sensor hub may be connected to the LX1 USB AgrowLINK for firmware updates, communication protocol configuration, addressing and manual operation. Standard drivers automatically install in Windows for the LX1 USB AgrowLINK.
Connection to MODBUS RTU
Use the LX2 ModLINK to connect MODBUS devices to the GrowNET™ port.
HX8 GrowNET ™ hubs are compatible with LX2 ModLINK™ and MODBUS.
Connect multiple devices to a single LX2 and benefi t from the superior buff
ered communication of the HX8 hub.
Supported Commands
0x03 Read Multiple Registers 0x06 Write Single Register
A request to use a function that is not available will return an illegal
function error (0x01).
Register Types
Data registers are 16 bits wide with addresses using the standard MODICON
protocol. Floating point values use the standard IEEE 32-bit format occupying
two contiguous 16 bit registers. ASCII values are stored with two characters
(bytes) per register in hexadecimal format. Coil registers are single bit
values which control and indicate the status of a relay; 1 = on, 0 = off .
MODBUS Holding Registers
A request to read or write a register that is not available will return an
illegal address error (0x02).
Parameter| Description| Range| Type| Access|
Address
---|---|---|---|---|---
Address| Device Slave Address| 1 – 247| 8 bit| R/W| 40001
Serial#| Device Serial Number| ASCII| 8 char| R| 40004
DOM| Date of Manufacture| ASCII| 8 char| R| 40008
HW Version| Hardware Version| ASCII| 8 char| R| 40012
FW Version| Firmware Version| ASCII| 8 char| R| 40016
VWC RAW Count, Integer| | —| 16 bit, unsigned| R| 40101 – 40108
Electrical Conductivity| | 0 – 20,000 uS| 16 bit, unsigned| R| 40109 – 40116
Temperature| | -40° – 60°C x10| 16 bit, unsigned| R| 40117 – 40124
Technical Information
This device uses 5Vdc to operate SDI sensors with TRS cable connections.
Compatible Sensors:
- Aroya Teros 12
Maintenance & Service
Exterior Cleaning
Exterior may be wiped with a damp cloth wish mild dish detergent, then wiped
dry. Disconnect power before cleaning the enclosure to prevent damage to
equipment.
Storage and Disposal
Storage
Store equipment in a clean, dry environment with ambient temperature
between10-50°C.
Disposal
This indsutrial control equipment may contain traces of lead or other metals
and environmental contaminants and must not be discarded as unsorted municipal
waste, but must be collected separately for the purpose of treatment, recovery
and environmentally sound disposal. Wash hands after handling internal
components or PCB’s.
Warranty
Agrowtek Inc. warrants that all manufactured products are, to the best of its knowledge, free of defective material and workmanship and warrants this product for 1 year from the date of purchase. This warranty is extended to the original purchaser from the date of receipt. This warranty does not cover damages from abuse, accidental breakage, or units that have been modifi ed, altered, or installed in a manner other than that which is specifi ed in the installation instructions. Agrowtek Inc. must be contacted prior to return ship- ment for a return authorization. No returns will be accepted without a return authorization. This warranty is applicable only to products that have been properly stored, installed, and maintained per the installation and operation manual and used for their intended purpose. This limited warranty does not cover products installed in or operated under unusual conditions or environments including, but not limited to, high humidity or high temperature conditions. The products which have been claimed and comply with the aforementioned restrictions shall be replaced or repaired at the sole discretion of the Agrowtek Inc. at no charge. This warranty is provided in lieu of all other warranty provisions, express or implied. It is including but not limited to any implied warranty of fi tness or merchantability for a particular purpose and is limited to the Warranty Period. In no event or circumstance shall Agrowtek Inc. be liable to any third party or the claimant for damages in excess of the price paid for the product, or for any loss of use, inconvenience, commercial loss, loss of time, lost profi ts or savings or any other incidental, consequential or special damages arising out of the use of, or inability to use, the product. This disclaimer is made to the fullest extent allowed by law or regulation and is specifically made to specify that the liability of Agrowtek Inc. under this limited warranty, or any claimed extension thereof, shall be to replace or repair the Product or refund the price paid for the Product.
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