User manual

OPERATION MANUAL
Technical changes reserved
0141 0316-155 20.04.2016
Temperature measurement system TLOG20
connections RS232, RS485, USB
• 8 bits (two ASCII characters) Hardware coding (type of the mea-
surement sensor). The Dallas sensors have the code number 10
for 1820 and 28 (HEX) for 18B20.
• 48 bits (twelve ASCII characters) serial number of the sensor:
Here, the serial number of Dallas-sensor is mentioned.
• 8 bits (two ASCII characters) CRC (check sum)
• ´ <CR>´ as line termination
Structure of Measured value Datalines
The measurement value data line contains the current measurements
of the sensor operating on the corresponding channel. All information
are represented in binary and is transferred ASCII coded format wit-
hout separation characters. For the sensor marking 01, the line has
following structure:
• Character ´V´ at the beginning of the line
• 8 bits (two ASCII character) logical channel number
• 2 Bytes (4 ASCII characters) measurement data with 0.01°C re-
solution. The hexadecimal value is to be converted into a decimal
number and to be divided by 100. With this, the temperature
value is obtained in °C with two decimals.
• 8 bits (two ASCII characters) check sum (CRC)
• ´<CR>´ as line termination
Accessories (Optional)
Software “PCLOG“
The software screen are in English and German language. Tempera-
ture values can displayed in °F or °C. Besides data storing on hard
disk, the software offers as most important feature the graphical re-
presentation of all measured and recorded channels in the form of a
temperature Vs time chart (online scriber function). By means of Drag
& Click, the window section can be enlarged and the time or tempe-
rature axis can be scaled as desired. Besides the graphic view, the
representation is also possible in the form of a table. Cut & paste is
used for capturing measured data series into a spreadsheet program
(for example EXCELTM). All tables and graphic representations can
be printed out in colors. In addition, simple monitoring and controlling
functions are also integrated in the software. Limits can be set for each
channel. An acoustic signal (Wave le) is given when the values are
exceeded. Control of up to eight external devices is possible by a relay
card, to be attached at the parallel port or USB connector.
Software Prolab
With this software, professional measurement and control projects can
be realized in a simple, graphics based development platform. You can
simply draw the wiring diagram of the measurement circuit and do the
project design. Without any knowledge of programming, the measure-
ment values of up to 16 temperature sensors can be easily used in the
measurement circuit.
Arithmetic and logical components take care of linking and proces-
sing of the measurements. Modules like impulse generators, timers
and relay cards etc. provide extensive possibilities for control and re-
gulation. Various instruments, scribers and tables serve as the sto-
rage and representation of measured values and you can monitor the
measurement system with display and control elements. The system
is operated through a self designed front panel, on which you can ar-
range switches, potentiometers, displays, LED´s, instruments etc. The
software also enables compilation of the project into an EXE-le, which
can run without Prolab.
B+B Thermo-Technik GmbH | Heinrich-Hertz-Straße 4 | D-78166 Donaueschingen
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