TOIP Pty TBS02A4 User manual

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User Manual
TBS02A4
Analogue to SDI-12
Converter
Version 1.3
January 2020
Copyright TOIP Pty Ltd
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Table of Contents
1 TBS02A Introduction................................................................................3
2 Specifications.............................................................................................
3 Setup and Configuration............................................................................5
3.1 Hardware Configuration......................................................................6
3.2 Firmware Configuration......................................................................6
3.2.1 Configuration with SDI Commander and TBS03.........................6
3.2.2 Change Address <old add>A<new add>!...................................6
3.2.3 Measurement Commands <add>Mn! <add>C>n!.......................6
3.2. Get / Set Serial Number..............................................................7
3.2.5 To Get the Current Input Type Selection.....................................7
3.2.6 To Set the Input Type..................................................................7
3.2.7 To Set the Response Time..........................................................7
3.2.8 To Set the Turn off Delay...........................................................8
3.2.9 Sensor Scaling............................................................................8
3.2.10 Temperature Calibration...........................................................8
3.2.11 Rest to Factory Defaults...........................................................8
Warranty..................................................................................................10
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1 TBS02A4 Introduct on
This manual is written for the TBS02A , an interface unit designed to allow
up to analogue sensors to be connected to SDI-12 telemetry units.
The inputs may be programmed for any of three modes: Analogue 0-1V,
Analogue 0-2.5V and -20mA.
The TBS02A is configured using extended SDI-12 commands and is
supplied as a bare PCB which users must mount in an enclosure of their
choosing.
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2 Spec f cat ons
Parameter Value / Range Comment
Dimensions 120 x 80 x 57 mm PCB Only
Environmental rating IP67
Analogue Inputs
AN 0 to AN3 Mode 0 0 – 1V
Mode 1 0 – 2.5V
Mode 2 -20mA
Analogue channel
Resolution
12 Bit 2.5V voltage
reference +/- 2.5 mV,
5ppm/
o
C
Temperature - 0 to +85
o
C +/- 0.25
o
C at 25
o
C
Max error +/- 1
o
C
Resolution 0.1
o
C
Power Supply 6 to 16 V DC
Supply Current Read typ 10mA
Sleep 30uA

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3 Setup and Conf gurat on
Before using the TBS02A you need to choose the operating mode for the
inputs and set the hardware and firmware configuration to suit.
You will need to mount the TBS02A inside a suitable enclosure. Cable
glands are the easiest way to route sensor cables to the unit. Strip the ends
of the wires back and tin them, before cutting them back to a length of
6mm. The wires can then be inserted into the Cage Clamps on the PCB:
depress the white level on the end of the clamp with a screwdriver and
push the wire into the hole.
Connect the wires as follows:
Term nal Funct on
VCC_CHn Switched sensor supply for
channel 0 to 3
INPUT CHn Input signal (output from sensor)
GROUND Ground line for voltage sensors
(not used with -20mA sensors)
SHIELD Sensor shield / screen
The sensors are connected as follows:
Analogue sensors
◦the sensor power is connected to VCC
◦sensor ground wire to GND
◦sensor output is connected to INPUT
2 wire (loop powered) -20mA sensors
◦ connect sensor + lead to VCC
◦connect sensor – to INPUT
◦GND – not used
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3 wire (externally powered ) -20mA sensors
◦connect sensor Power to VCC
◦connect sensor Ground to GND
◦connect Sensor Out to INPUT.
3.1 Hardware Configuration
The inputs of the TBS02A may be used in any of 3 modes: 0-1V, 0-2.5V,
-20mA. The selection of which mode to use is made using sets of jumpers
on the PCB. Each input has its own set of jumpers :
Mode Jumpers
0-1V A
0-2.5V B
-20mA B and C
3.2 Firmware Configuration
3.2.1 Conf gurat on w th SDI Commander and TBS03
Install the SDI Commander software on your PC. Connect the TBS03 to a
USB port on your PC and open SDI Commander. Use SDI Commander to
send the configuration commands to the TBS02A .
3.2.2 Change Address <old add>A<new add>!
The address of the interface can be changed using the standard SDI-12
address change command.
e.g. to change the address from 0 to 0A !
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3.2.3 Measurement Commands <add>Mn!
<add>C>n!
Use the SDI-12 Measure (M) or Concurrent Measure (C) commands to
read the sensor values.
Command Funct on
<add>M! <add>C! Read Analogue 0
<add>M1! <add>C2! Read Analogue 1
<add>M2! <add>C2! Read Analogue 2
<add>M3! <add>C3! Read Analogue 3
<add>M8! <add>C8! Read on chip
temperature
3.2.4 Get / Set Ser al Number
To read the Serial Number use the I command <add>I!
To set the Serial Number <add>XNssssss!
e.g to set the Serial number to 52130 0XN 52130!
3.2.5 To Get the Current Input Type Select on
To read which mode an input is set to <add>XGICn!
e.g To read the mode of sensor 2 0XGIC2!
3.2.6 To Set the Input Type
To set the mode of an input <add>XSICn,m
where n = Channel number (0 to 3)
m = input type 0 = 0-1V
1 = 0 – 2.5V
2 = -20mA
e.g to set channel 3 to -20mA 0XSIC3,2!
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3.2.7 To Set the Response T me
Refer to the sensor manual for details on any required warm up time. The
default setting is 1 second.
To set the response time <add>XRTMn,xxx!
where n = Channel number (0 to 3)
xxx = warm up time in seconds
3.2.8 To Set the Turn off Delay
The turn off delay can be set for each sensor <add>XDTn,xxx!
where n = Channel number (0 to 3)
xxx = turn off delay in seconds
3.2.9 Sensor Scal ng
The scaling of the analogue channels can be set using a 3
rd
order
polynomial equation:
Y = a*x
3
+ b*x
2
+ c*x + d
The constants a to d can be a floating point value containing up to 7 digits
(including the decimal point)
The default is a linear expression (a =0, b = 0, c = 1, d = 0)
To set the Scaling <add>XSCn,aa.aa,bb.bb,cc.cc,dd.dd!
3.2.10 Temperature Cal brat on
The TBS02A includes an on board temperature sensor which may be used
to return the current board temperature. You can calibrate the sensor
against a reference temperature sensor.
To set the temperature to a reference value <add>XCT,ttt.ttt!
Where ttt.ttt = current reference temperature
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3.2.11 Rest to Factory Defaults
Should it ever be necessary, you can reset the board to the factory default
settings <add>XGD!
The default settings are as follows:
Sensor address : 0
ADC Scale: a = 0, b = 0, c= 1; d = 0
Response Time is 001(second)
Time for turn off ADC : all 0(second)
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4 Warranty
The TBS02A is covered by a one (1) year warranty.
Warranty is available on a return to base basis only. End users must pay
for return shipment of faulty products either TOIP Pty Ltd or their local
distributor. If the unit is assessed by TOIP Pty Ltd and found to be a
warranty failure, it will be replaced free of charge TOIP Pty Ltd will pay the
return shipment to the owner.
The warranty does not cover mechanical damage, damage inflicted during
installation or removal or damage caused by animals.
Prior to using the product, please ensure that you read, understand and
accept the Warranty Statement. If you do not accept the conditions of the
Warranty Statement, please return the probe for a refund.
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