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dvanced
S
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T
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nc. U.S.A.
Website:
www.astisensor.com
IOTRON
TM
Trademark of ASTI
IOTRON
TM
pH / ORP / ISE / DO / Conductivity Measurement Products Lines
“Select Channel” Menu
The select channel is a global setting. Most all tasks
to be performed in the remainder of the menu such
as sensor type & node address, sensor calibration,
setup and scaling of analog output and relays use
the channel that is set in this menu.
You must first desginate whether you are adding or
removing a channel from service. After selecting the
channel you can set the sensor type for that channel
by clicking on the “
Select Sensor Type
” to navigate
directly to this screen.
The working channel can be changed by clicking on
the number shown in blue which will load a screen
where a new channel can be entered. Valid choices
are one to three (1 to 3). You will be asked to
confirm each channel addition or removal.
If adding a new sensor after designating the channel
to which it will be assigned you will then
automatically proceed to “
Sensor Type
” screen for
configuration. The channel number must be
designated before the valid node address for the
particular sensor type can be appropriately assigned.
IMPORTANT NOTE ABOUT BAUDRATE:
The default baudrate for all HiQDT sensors to be used with the six channel controller is 19,200 kbps. Default baudrate for
the HiQDT sensors is 19,200 unless otherwise requested at time of purchase. If the baudrate is changed to 9,600 kbps on
your HiQDT sensor it cannot be used with the ASTI HiQDT touchscreen controller.
ONLY the ASTI HiQDT Windows
software can change the baudrate of the HiQDT smart digital RS-485 MODBUS RTU sensors (see manual for details).
IMPORTANT NOTE ABOUT NODE ADDRESS:
The default node address for HiQDT sensors assumes channel 1. The default node address will be exactly the same as the
sensor type. So for pH the sensor type is 1 and the default node address is 1. Likewise for the standard range ORP the
sensor type is 2 and so the default node address is 2. Similarly for the wide range ORP the sensor type is 3 and the default
node address is 3. Lastly for dissolved oxygen (D.O.) the sensor type is 4 and so the default node address is then also 4.
IMPORTANT NOTE: ONLY the ASTI HiQDT Windows software or the ASTI handheld communicator (HHC) can
change the node address of HiQDT smart digital RS-485 MODBUS RTU sensors (see respective manuals for details).
ORDERING NOTES:
HiQDT sensors can be ordered with node addresses pre-assigned other than the default values shown above. This is
done by adding “-NX” to the end of the part number where X is the node address to be factory assigned. If not special
indication is made then the sensor will come with the standard default node address scheme as detailed above. For cases
where the sensors are purchased together with the controller a logical preset node scheme will be provided so that all
sensors will automatically show up in the home display screen allowing for plug and play operation right out of the box.