Agrowtek SXC User manual

© Agrowtek Inc. | www.agrowtek.com | Technology to Help You Grow™
1© Agrowtek Inc. | www.agrowtek.com | Technology to Help You Grow™
Technology to Help You Grow
AGROWtEK
Power 24Vdc, ~5W
Max Cable Distance 1000ft
Aspirator 6cfm Fan with Foam Filter
Temperature Range -20 - 60°C
Temperature Accuracy ±0.2°C typical
±0.4°C maximum
Humidity Range 0-100% RH (non condensing)
Humidity Accuracy ±2% 0-80% typical
±4% maximum
Light Irradiance Range 0 - 1000W/m2
Light Accuracy ±10%
CO2 Range 0-2000ppm
(10.000ppm Modbus)
CO2 Accuracy ±50ppm + 3% of reading
4-20mA DAC Resolution 12 bit, 0.005mA
Interface GrowNET, MODBUS or WiFi
Specications
Climate Sensor & Data Logger
Contents
Installation Instructions 2
Connection to GrowControl™ GCX 3
GrowNET™ Hubs 3
Connection to USB AgrowLINK 4
Connection to 4-20mA Outputs 4
Connection to MODBUS RTU 5
Serial Speed & Format 5
Supported Commands 6
Register Types 6
Sensor Value Registers 6
Toggle Units Register 6
Calibration Registers 6
MODBUS Holding Registers 7
CO2 ppm Sensor Upgrade 8
Maintenance & Service 9
Cleaning 9
Fan Filter 9
Storage and Disposal 10
Warranty 10
INSTRUCTION MANUAL
SXC

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Techno logy to Help You Grow
AGROWtEK
U.S.A.
MADE IN
© 2 0 1 6 Agrow tek Inc.
w w w .agrow tek .com
GrowControl
DigiClimate Canopy Sensor
TM
TEMP RH LIGHTC O2
if equipped
K EEP
F AN
F ILTER
CLEAN
Intak e F an
& F ilter
Ligh t S ensor
G row N ET/M O D B U S Port
RS - 48 5
Pow er Jack
or M ini- D in
6 - pin Analog
Ex h aust
S lost
S tainless S teel
H anging B rack et
W iF i Antenna
if equipped
W all M ounting
S lots
W iF i AP M ode Reset
Wall mounting slots are provided for installing against a vertical wall surface, or a hanging bracket is avail-
able for conveniently suspending the sensor from a wire or cable in the middle of the environment. Note the
location of the light sensor (top.) Sensor should be installed with the light sensor facing up.
Install in locations with adequate access to the environmental conditions and away from extreme inuences
such as ventilation ducts, doorways, windows or heat generating equipment such as lights and ballasts.
Installation Instructions
Do NOT connect the GrowNET port to Ethernet networks. Disconnect power while making connections to
prevent damage to any components.

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GrowNET™ Hubs
All GrowNET™ devices are connected using standard CAT5 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.
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 bu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.
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
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.
Installation Notes
Refer to the GCX controller manual for details on adding the device to the system.
Connection to GrowControl™ GCX

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LX1 USB AgrowLINK connects Agrowtek’s devices to a computer’s USB port for:
Connection to USB AgrowLINK
• Firmware Updates
• Calibration
• Conguration
• Data Logging Download
• More
24Vdc 0.5A
Power Supply
Option 1: Use the LX3 Analog Bridge with Mini-Din 6 analog sensor port connection and removable terminal
block for wire connections. Terminal block includes 24V power terminals and four terminals for the analog
channels. 4-20mA linear outputs correspond to the ranges in the specications table.
Connection to 4-20mA Outputs
24VDC
4-20mA PLC
ANALOG INPUTS
MINI-DIN 6
Analog Cable
Visit www.agrowtek.com for free software applications.
Standard FTDI drivers automatically install in Windows. GrowNET protocol available for custom software ap-
plications; sample C# code available. See software manual for more information.
LX1
U S BG row N ET™ RJ45

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Connection to MODBUS RTU
Serial Speed & Format
RS-485
Use the LX2 ModLINK to connect MODBUS devices to the GrowNET™ port.
The default serial data format for the LX2 ModLINK interface is: 19,200 baud, 8-N-1.
Alternate speeds and formats between 9,600 - 115,200 baud may be congured with the free AgrowLINK PC
utility using a LX1 USB AgrowLINK and the cross-over adapter supplied with the LX2 ModLINK.
MODBUS Manual
See MODBUS manual for more information.
LX2 ModLINK™LX1 USB AgrowLINK™
G row N ET™
Cross- O v er
7 - 24 Vdc
U S B
Cross- O v er
RJ45/CAT5
7 - 24 Vdc
3.3/5Vdc Serial Bus Compatible.
Include required bus terminating resistors per EIA standard.
TX/RX+
TX/RX-
PLC
RS-485

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Calibration registers are 16-bit signed integers for the purpose of calibrating the sensor values or analog out-
put channels. Calibration may be achieved by writing the desired calibrated value to the associated register.
Writing to the calibration registers automatically invokes the calibration routine for that register.
Oset Calibration
Oset, or zero calibration, is an arithmatic positive or negative correction to the sensor reading and is the
only type of sensor calibration available on climate/environmental sensors.
To perform a sensor oset calibration, simply write the corrected sensor value to the oset calibration reg-
siter (taking into account the integer scale as shown above.)
For example: to set the temperature to a calibrated value of 25°C, write the value “2500.”
Sensor # Type Integer Scale Range
1 Temperature x100 -2000 - 6000 (-20 - 60°C) / -400 - 14000 (-4 - 140°F)
2 Humidity x10 0 - 1000 (0 - 100%)
3 Light x1 0 - 1000 W/m2
4CO2 x1 0 - 10,000 ppm
Sensors with alternate units may toggle the units using the“toggle units”register. To toggle the units, send
the sensor channel number to to the toggle register. This register is write-only.
For example: to toggle between °F and °C, send a “1”to register 1002.
Sensor values are available in integer or oating point formats depending on the register requested (see
map.)
Sensor Value Registers
Calibration Registers
0x03 Read Multiple Registers
0x06 Write Single Register
A request to use a function that is not available will return an illegal function exception.
Supported Commands
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.
Register Types
Toggle Units Register
For example: an integer temperature value of 2417 is equal to a temperature reading of 24.17°C.
The value“9999” is representative of a failed sensor (with the exception of CO2 which will read 0.)

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Analog Calibration
Analog output calibration sends a positive or negative oset to the respective output channel’s digital to
analog converter (DAC.) The DAC has a resolution of 0.005mA/bit.
±1 calibration bit = ±0.005mA adjustment
For example: to shift the analog output up by 0.1mA, set the analog oest value to +20. ( 0.1 / 0.005 = 20)
MODBUS Holding Registers
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
Toggle Units Toggle sensor units 1 - 4 16 bit, unsigned W 41002
Sensor Reading,
Integer
Temperature -2000 - 6000 (-20 - 60°C)
16 bit, signed R
40101
Humidity 0 - 1000 (0 - 100%) 40102
Light 0 - 1000 W/m2 40103
CO2 0 - 10,000ppm 40104
Sensor Reading,
Float
Temperature -20.00- 60.00 °C
32 bit, oating pt R
40201
Humidity 0 - 100.0 % 40203
Light 0 - 1000 W/m2 40205
CO2 0 - 10,000ppm 40207
Calibration Input,
Oset (Zero)
Temperature
See integer ranges above. 16 bit, signed W
41101
Humidity 41102
Light 41103
CO2 41104
Calibration Input,
Analog Output
Temperature
-255 - 255 (bits) 16 bit, signed W
41301
Humidity 41302
Light 41303
CO2 41304
A request to read or write a register that is not available will return an illegal address error (0x02).

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CO2 ppm Sensor Upgrade
The SXC sensor may be upgrade to sense and control CO2 ppm with a precision NDIR type CO2 sensor.
1. Disconnect cables from the sensor.
2. Remove the hanging bracket (1).
3. Take note the orientation of the light sensor on the cover.
4. Remove the two cover screws (2) and lift o the cover.
5. Locate the CO2 headers on the circuit board.
6. Position and install the CO2 sensor module (3) ensuring the sensor is oriented with the correct pin head-
ers. One header is 4-pins and the other is 5-pins.
Installing the sensor backwards will damage the CO2 module.
7. Re-install the top cover and re-connect cables.
Note the light sensor orientation is correct and not backwards.
8. Check to ensure the CO2 reading is now working.
Note correct pin alignment.
1
2
3
5 pins
4 pins
CO2 Sensor
Module
Light
Sensor
CO2 Sensor
Headers

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Exterior and label surfaces may be wiped with a damp cloth wish mild dish detergent, then wiped dry.
Avoid spraying the sensor with chemicals or water spray.
Maintenance & Service
Cleaning
Sensors require periodic maintenance to ensure proper performance.
Fan Filter
2
1
3
The fan air lter should be periodically removed for cleaning.
It is NOT necessary to remove the fan.
1. Pry the retaining grate (1) out of the base (3) using a small at blade eye-glass screwdriver.
2. Remove the foam lter (2) and replace, or clean with mild dish detergent and water, then pat dry.
3. Check for proper fan operation while the lter is removed.
If fan is not spinning or is making noise, replace the fan.
4. Re-install the foam lter (2) and grate (1) into the base (3) gently snapping the grate back into place.

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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 modied, altered, or installed in a manner other than
that which is speci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 hu-
midity or high temperature conditions. The products which have been claimed and comply with the afore-
mentioned 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 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 pro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 specically 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.
Warranty
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 contami-
nants 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.