Conrad 559619 Component 559619 데이터 시트

The temperature logger can be connected to a PC a RS232 cable or the Voltcraft USB programming cable
(Conrad item no. 197339).

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The temperature logger must not be connected to a PC via both interfaces at the same time!

Alternative 1: Connection via a RS232 cable (signals RXD, TXD
& GND)
The connections TXD and RXD form the serial interface to the PC
with GND (data lines must be crossed).
PCB

SubD plug

RXD

Pin 3

TXD

Pin 2

GND

Pin 5

                     Front view

Alternative 2: The temperature logger can be connected to a
USB port directly via the Voltcraft USB programming cable
(Conrad item no. 197339), see figure on the right. as well

Establishing PC connection:
To communicate with the temperature logger, a terminal programme is required. The configuration is
described in these instructions based on the freely available terminal programme „Tera Term“.
Alternatively, other terminal programmes can also be downloaded from the Internet free of charge. It is not
possible to warrant complete function for each and every available terminal programme. Various settings
need to be adjusted as well. There is an installation routine for „Tera Term“. All instructions are displayed
via the installation programme.
Proceed in the following sequence:
1. Starting „Tera Term“ via the installed desktop icon or the entry in the programme start bar.
2. Selection of a new connection (serial) and the COM port number. When using the Voltcraft USB

programming adapter, the connection is displayed in the windows device manager in „Silicon Labs
CP210x USB…“via a RS232 connection in „PCI Serial Port (COM…)“.

3. The following interface parameters must be set in „Settings“ -> „Serial port“:

Baud rate = „19200“, Data = „8 bit“, Parity = „none“, Stop = „1 bit“, flow control = „none“.

4. In „Settings“ -> „Terminal Settings“, you need to pick the option „CR+LF“ (Carriage Return + Line Feed)

in „New line“ and „Transmitting“ for correct display of the menu in the terminal window.

5. When all terminal programme settings are correct, pushing the Enter button in the terminal window

shows the following main menu:

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If the main window does not appear at once, the temperature logger should be restarted by a
reset (briefly disconnect the supply voltage) if required.

The background colour can be adjusted in the menu „Window settings“ in „Settings“.

Up to 12 digital „DS1820“ temperature sensors can be connected to this temperature logger. You can thus
record the temperature in 12 different places at once.
The scope of delivery already includes a sensor. Further temperature sensors are available under order
no. 184024. The technical data of the sensor in the operating instructions can be viewed on the item page
of this order number as well.
Additionally, a voltage can be measured via an analogue input. A voltage divider permits connecting any
devices that provide a voltage signal as measuring output.
The temperature logger can be operated in stand-alone mode (operation independently of a PC system)
and in connection with a PC (PC mode) or in PC mode with logging function.
A maximum of 32768 measured values can be saved in the temperature logger. The data can be read at
a PC later via a RS232 cable or the Voltcraft USB programming cable (Conrad item no. 197339). The
measuring interval can be set freely in the range of 1 s to about 18 h (= 65534 s).
The temperature sensors DS1820 are already calibrated ex works. The sensors are assigned via the
internal ID (serial number) of the sensor, so that the displayed order of the sensors does not change in case
of several measurements. The accuracy of the temperature sensors is ±0.5°C typ. (in the area of
0...+70 °C).

• Temperature logger
• 1 x sensor „DS1820“
• Operating instructions

• Function inspection in the idle condition: LED flashes 1x per second
• Measurement active: LED flashes 1x per second and additionally 2x when recording the measured value
• Logging memory is full: LED flashes 3x per second

UB & GND: Connection terminals for the operating voltage (7 to 14 V/DC).
SEN (input for temperature sensors): Connection of up to 12 temperature sensors type „DS1820“. They
are all switched in parallel via a one-wire bus; see following illustration.

The two outer connections of the DS1820 temperature sensor must be connected to each other and to the
connection „GND“ of the temperature logger.
The middle connection must be connected to the „SEN“ input.

Attention!
The middle connection and the two outer connections must not touch! All live lines must be
insulted with a shrink hose.
In order to safeguard against interferences, a screened cable must be used to connect the
temperature sensors. The screened cable must be connected to the GND connection of the
temperature logger.

ANA: This input is an analogue/ADC input with a resolution of
10bit. This input (see figure on the right, item „1“) permits
measuring a voltage between 0 and 1 V in parallel to the
temperature measurement.
Inserting a voltage divider upstream permits expansion of the
voltage range and adjustment to the respective requirements.
A reconciliation routine is available for this case.
JP1: This jumper is used to switch between PC mode (jumper
removed) and standalone mode (jumper inserted at activation).
TXD /RXD: Connection terminal for a serial RS232 data
transmission (see following chapters)

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