Version 1.1.0 released

This version contains a number of user interface improvements and fixes minor issues with “high DPI” displays.

To prepare for future functions, we renamed the following tabs:

  • Device tab -> Input tab
  • Timer tab -> Control tab
  • File tab -> Output tab

We added an auto-stop function to the Control tab (Plus feature). Data logging is stopped automatically after the set time (10 minutes in the screenshot below):
Control tab: Polling and auto stop

Version 1.0 released

We’re happy to announce the release of version 1.0 of our data logging software for scales and balances (also works with other measuring instruments, bar code readers, etc.).


The basic functionality is free to use for personal, non-commercial purposes. A 30% discount will be applied to all license purchases until October 31st. Trial licenses are available upon request.

Version 0.9.0 – combine multiple lines into one row

With the new features in version 0.9.0, Simple Data Logger takes a big step towards the release of version 1.0 (planned for next Monday).

Combine multiple lines into one row

This is best explained with an example: We’re using a counting scale and it sends the (net) weight, count and average piece weight to the PC (each in a separate line):
Multiple lines received from counting scale

While we want to capture all of these values, we do not want them to appear in individual lines (rows) in our CSV file. Instead, these three values should be written into one row (as three columns).

This is now possible with Simple Data Logger by using the Combine setting in the Process tab:
Process tab

The result is one row containing three values:
3 lines combined into one row
Without this setting, the values would have been written into three separate rows:
3 separate rows

Ignore “empty” lines

In the example above, you may have noticed that the counting scale sent a fourth line containing only the carriage return and line feed characters. By selecting “Ignore received lines consisting only of white-space characters“, we don’t have to consider this row when setting the desired number of columns.

This settings also affects synchronized polling with a delay: “empty” lines are not considered to be an answer from the device and do not prompt SDL to repeat the polling command.

Show sent data in the event log

Until now, only data received form the connected device was shown in the event log even though SDL already had the ability to send commands. This sent data is now shown in green (the screenshot also shows the reply from the scale and the captured weight value):
Event log with sent dataYou can change this behavior in the Settings tab:
Settings tab

Line numbers and custom comments

SDL can add line numbers as well as a custom comment (e.g. the project or sample name) to each row. You’ll find these settings in the File tab:
Add additional informationResult:
Line numbers and comment

Bug fixes and UI improvements

We’ve fixed a bug which caused SDL to stop data collection when a number conversion error occurred. The error is now logged, but SDL does not stop.

We’ve also harmonized the positioning and margins of the user interface elements to make SDL easier and more pleasant to use.

Version 0.8.0

New features and improvements in version 0.8.0 of our data logging software:

Easily set the correct formats for your language and region (locale)

You can set the date, time and CSV formats by simply clicking on a button in the File tab (which shows your current language/region name):
Formats for English (United States)The formatted current date and time are shown to the right of the format boxes as examples.

It is, of course, still possible to manually change the format settings, i.e. to include milliseconds or to use a 24h time format.

Localized day and month names can be used by deselecting the “invariant culture” checkbox:
Formats in French (localized)

Flow control (handshaking)

Simple Data Logger supports XON/XOFF software flow control and RTS/CTS hardware flow control for RS-232 connections (as well as a mode that uses both). You can also enable the “data terminal ready” (DTR) and “request to send” (RTS) control signals by clicking on the corresponding button:
Flow control (handshaking)Some serial devices require one or both of these signals to be set before they will send any data to your PC. Please note that you cannot manually set the RTS signal when using RTS flow control.

A write timeout can be set in the Timer tab (default value: 500 ms). This is important when using flow control (handshaking) to prevent the port being blocked indefinitely on write operations:
Write timeoutTo disable the write timeout, set it to -1 (not recommended).

Additional COM port information shown in the event log

The RS-232 connection parameters, control signals as well as the polling command, timer/delay and write timeout are shown in the event log when opening the COM port:
Event log COM port information

This should simplify troubleshooting when we ask you for a screenshot.

Better display and handling of errors

Errors and important messages are shown in red in the event log:
Error messages

To trigger the errors above, we removed an RS-232 to USB converter while the port was open.

We’ve also fixed a bug which caused the application to exit when certain unusual errors (like the one above) occurred while using a timer to send commands (polling).

Reload user settings

Simple Data Logger saves all settings automatically when the application is closed. If you’ve made changes you want to undo, you can press the Reload button in the Settings tab to restore the last saved settings:
Reload user settingsThe Reset button is also still there and will reset everything to the application default values (as if you were running Simple Data Logger for the first time).

Version 0.7.2 – New device profiles for Adam Equipment scales

Version 0.7.2 of our data logging software includes tested* device profiles for the following scales made by Adam Equipment:

  • CBK, *GBK, GFK (GK indicator): We recommend setting “C8 LAb” to “off” in the menu of your scale, particularly if you’re using continuous transmission mode “Ct StA” oder “Ct AnY”).
  • *CPWplus: Set the scale to “trn 2” for continuous transmission or to “trn 3” to use polling (or the print button on the scale).
  • GBC, GFC (GC counting indicator): You can choose to capture the weight or the number of pieces. *We’ll receive a GBC counting scale later this week for tests.

Adam Equipment Scales

These new profiles make it easy to set the default RS-232 parameters and the command to poll the weight: simply press the “Set default…” buttons (available in the Device and Timer tabs):

Poll weight from Adam Equipment scale using timer

Please note that our software works with most scales and balances even if no pre-defined device profile is available yet: choose “Generic measuring instrument” and set the interface parameters and the polling command manually (your device manual should contain the necessary information). If required, you can also customize the regular expression SDL uses to match and capture data. Further information is available in our documentation.

If you’re a manufacturer and would like us to to include your measuring instruments, please contact us and send us the necessary information (or devices for testing):

  • RS-232 interface parameters and/or default IP port number.
  • Data format, including the terminator/delimiter (data has to be sent as ASCII, but we will need a precise description of the format so that we can can capture the measuring value).
  • Available device modes (e.g. manual transmission, automatic transmission on stability or in intervals, continuous transmission, command mode, etc.).
  • Polling command (which tells the instrument to send the measuring value immediately; weighing instruments should send the net weight).

Version 0.7.1 – Remove characters | Discounted licenses available for beta-version users

The latest version of Simple Data Logger comes with a function to remove unwanted characters from the data received from the connected device. This is particularly useful when dealing with accuracy class I or class II balances with differentiated digits.

We’ve also made several small UI improvements. The timer tab has gained a useful button to set the default polling command for the selected device.

Licenses are now available for purchase

At this point, we’ve implemented the most important functions of Simple Data Logger and have tested the software with multiple devices, high data rates and data acquisition operations running over several days. Even though SDL is still in beta and can be used for free by all users until September 30, 2018, we’ve received multiple requests for license purchases.

Licenses are now available through our partner FastSpring. You’ll receive your license key and invoice immediately once your payment has been processed. To thank the users who have accompanied us through the development of our software, a 30% “beta” discount is applied automatically.

Note: The basic functionality of Simple Data Logger will remain free for personal, non-commercial use.

Version 0.6.0 – Polling

As of version 0.60, Simple Data Logger can send a user-defined command to the connected device to trigger a response (which is then recorded). The command is automatically repeated by a precise timer. Alternatively, SDL can also synchronize the command and the response, either adding a delay or polling the device as fast as possible.


To read more about the new polling functionality available in the timer tab, please consult our documentation.

We’ve also made sure that the list of COM ports in the device tab is now sorted in logical order (COM1, COM2… COM10).

Version 0.5.0

The newest version of Simple Data Logger contains significant performance and usability improvements.

Multicolored event log

The event log shows the data received from your connected device. The parts of this data which were captured to be logged are now highlighted. In the example below, we recorded data sent from an Ohaus STX scale intentionally set to transmit lots of data:
Event log: too many values captured

As you can see, many undesired values were captured. After a simple change to the regular expression which SDL uses to match and capture data, only the net weight was recorded:
Event log: net weight captured

The new multicolored event log is a very useful tool for troubleshooting.

Other improvements:

  • Improved responsiveness of the user interface even when data is received at very high rates.
  • Time for each line of data is now recorded after the first byte has been received (previously: when entire line was written to the file).
  • Program will warn you if you’re trying to exit while data collection is still running and will shut down gracefully if user confirms exit intent.
  • “Closed” message appears in event log after stop button is pressed (when port/socket has been closed).
  • “A&D” name is now shown correctly in start tab (with ampersand).

Version 0.4.8

User interface and usability improvements:

  • “Connected!” message in event log also appears for COM connections.
  • Generic text device is shown in italics in the device list to highlight that alphanumeric text devices (e.g. barcode scanners) are treated differently from numeric devices (e.g. measuring instruments).
  • Relevant settings are validated when switching from COM to TCP/IP and vice-versa:
    Error marks in SDL
  • Relevant settings are validated when pressing the “Set default parameters for device” button.
  • Downward arrows were removed from “Set default parameters for device” button as they would not appear correctly on Windows 7.
  • Tab order improved in license tab and license details dialog.

New features:

If you’ve already installed Simple Data Logger, it should update to version 0.4.78 automatically. Otherwise, click here to install it. Simple Data Logger is currently free to use for testing purposes, paid licenses will be available soon.

Version 0.4.7

  • Licensing functionality has been improved. Try using the following license key (valid for two months):

If you’ve already installed Simple Data Logger, it should update to version 0.4.7 automatically. Otherwise, click here to install it. Simple Data Logger is currently free to use for testing purposes, paid licenses will be available soon.