LOGO! Software

Logic module LOGO!


LOGO! Soft Comfort DVD

LOGO! Software – simply professional

LOGO! Soft Comfort – stands for sensationally easy and quick configuration.
This allows the creation of user programs by selecting the respective functions and their connection via drag-and-drop. This applies to the function block diagram and ladder diagram.

It has been proven useful to program the switching program step-by-step and to simulate and test it on the PC offline. This approach prevents time-consuming troubleshooting in the entire program.
Short configuration times are accomplished by creating your own macro blocks in which frequently recurring program parts are stored in a macro library.

Also possible: An online test during operation.

Last but not least, LOGO! Soft Comfort provides professional documentation with all of the necessary project information such as switching programs, comments, and parameter settings.

The LOGO! Soft Comfort also offers context-related online help that includes details on the individual function blocks and an explanation of the parameters and trends.

The LOGO! offers a comprehensive protection concept for your programs and access to the controller.

You can, of course, use the latest program version to further process and expand all programs that were created with previous versions.
As LOGO! 8 can use larger message texts you are able to update your texts reducing abbreviations and also implement new large sized symbols.
While migrate you should therefore optimize your messages.
At the same time you can activate the integrated web server in the message text.

LOGO! SoftComfort V8 – in new design
Familiar, easy operation in single mode and – brand-new – incredibly simple configuration in network mode (with LOGO! 8 only).
Automatic configuration of communication and display in network view. Up to 16 nodes can be dis-played in the network view.
Up to three programs can be displayed next to each other in single mode as well as network mode.
In network mode, you can easily drag signals from one program to another with drag-and-drop.

The new display of LOGO! 8 now offers twice as many characters per message text. In the external text display (TDE), 2.5 times more characters can be displayed.
This allows more targeted formulation of message texts, without abbreviations, in some cases with additional large-format symbols.
Plus you can activate the integrated web server in the message text of LOGO! 8. Via a WLAN access point you may watch the messages on a mobile device. This makes it rather practical to optimize the text messages during migration.


In combination with the LOGO! Soft Comfort software, the handling of our logic module is child's play: Program creation, project simulation and professional documentation are quite easy using drag-and-drop – for maximum user-friendliness.
This reduces engineering times significantly and facilitates servicing.

Design and functions

The LOGO! Soft Comfort V8 software does it all – create and test switching programs, simulate all 43 functions and, of course, documentation is extremely quick and easy with LOGO! Soft Comfort by using "drag-and-drop" on your PC.
And this is how it works:

Creating the switching program

  • select functions and place them in the drawing area

  • select the start and end point of the connection with the cursor and the software automatically "wires" the connection

  • the parameters of the functions, such as timers, threshold values, setpoints are defined in clearly structured dialog boxes

  • Simulation of the entire switching program with all functions now takes place on the PC while optimizing the parameters

  • Analog signals can be simulated with real values (e.g. temperature – 20 ºC to + 80 ºC)

  • Time-controlled as well as cyclic simulation can be used

  • even time- and date-dependent switching functions can be simulated

  • Realistic representation of the LOGO! display within the simulation

  • Display of states for all functions, parameters and actual values

  • do not forget to save the intermediate steps

  • up to this point, all of this is available with the demo software

Commissioning with LOGO!

  • wire the LOGO! as specified and connect to the PC with Ethernet cable

  • in the tested program, execute the function "Options / Transfer / PC to the LOGO!"

  • if several LOGO!s are connected, select the corresponding LOGO!

  • the software registers whether the PC has a matching IP address for the communication, then suggests an alternative IP address, sets it once it has been confirmed and then transfers the program to the LOGO!

  • Activate online test with display of states and actual values of LOGO! in RUN mode.

Soft Comfort - Documentation

Professional documentation is often quite time-consuming and is therefore frequently neglected.
Gaps will arise after the commissioning phase, if not before. LOGO! Soft Comfort supports you in this endeavor and will print updated and standard-compliant documentation at the push of a button.

  • We recommend naming the inputs and outputs

  • additional comments can be assigned to every function

  • individual placement and formatting of free text in the documentation

  • Clearly structured switching program display across several pages can be set

  • Professional printout with all necessary project information and standard-compliant borders

  • Separate printout of parameters and I/O names is possible

  • Integration in standard Windows applications is possible by saving as .pdf, .gif or .jpg

LOGO! Software

Customized functions for LOGO! (ready to use)

LOGO! offers 43 integrated function blocks

  • 8 basic functions

  • Special functions: 14 timer functions, 3 counter functions, 13 analog functions, 5 miscellaneous

The following five function blocks were added as of LOGO! 7:

  • Astronomical timer (as of LOGO! 8 with ON/OFF delay)

  • Min./Max. function

  • Averaging

  • Analog filter

  • Stop watch

Neue Funktionen

Creating macro blocks with library function

Recurring program parts can be saved separately as complete macro blocks (UDF user defined functions) and used in other programs.
You can build your own block library including version management from frequently used partial applications.
This speeds up testing and programming.
Version management will inform you when opening a program including a UDF about a later version of the UDF and you have the choice to stay with the old version or to update to the new one.
Macro blocks can be protected individually with a password.

Data logging as of LOGO! 7

Data from the application can be saved in the internal memory of the LOGO! or on a standard SD card as csv file.
This data can then be read from the internal memory by a PC or evaluated directly from the SD card.
Logging can be triggered cyclically or event-based, and up to 32 bytes with time stamp can be stored as one record.

Data logging




200 data records

200 data records

externa. standard cards

20.000 data records
on microSD card

2000 data records
on SD card

When data is saved on external cards, LOGO! 7 automatically overwrites existing data records according to the FIFO principle once the limit of 2000 data records has been reached.
A new log file is automatically created in LOGO! 8 when the limit of 20,000 data records has been reached. Up to 30 log files can be managed on one card.

LOGO! 8 Web server

Integrated web server for LOGO! 8 – it couldn’t be easier

The integrated web server in all LOGO! 8 basic modules that is used for monitoring and control with LOGO! via WLAN and/or the Internet does not require any HTML experience.

In addition to the integrated LOGO! display or the external Text Display TDE, the text can now also be released for the web server in the message text block. Check a box for the web server – done!
A router connection of the LOGO! 8 is required for the operation of LOGO! 8 via smartphone, tablet or PC with the same look and feel as on the display of LOGO! 8 or the TDE.
Here you can also use LOGO! hardware configurations without internal or external display.

The access to the web server must be enabled and protected by a separate password.

The web server works with all conventional browsers and has been optimized for display on a smartphone, tablet or PC.

Protection concept and security

A comprehensive and multi-level protection concept protects your know-how!

  • Program password:
    Protects your program from unauthorized access and/or changes.
    The complete program can still be used in multiple LOGO! units.
    In parameter mode, individual parameters can be changed at any time in a program protected by a password. If you want to protect individual parameters, you have to select this option in the respective function block

  • Copy protection (Know-how protection):
    If the program is also copy-protected, it can only be used once at a time. You have to use an external storage medium for this purpose. This means when you pull the storage medium from the LOGO! it goes into STOP. The program can then be used in a second LOGO! but not in multiple units simultaneously

  • For LOGO! 8 - Administrator and Operator mode:
    Specific functions, such as start/stop, time, date, etc. can only be changed in Administrator mode. Released parameters can be manipulated in Operator mode

  • For LOGO! 8 - Access protection:
    Separate passwords must be assigned for access via web server, text display, Internet or network.

Demo software
You can use the free demo software to completely develop, test and document your projects – just as with the full version.
The only restriction here is that communication with the hardware is not possible.

Overview of all function blocks:

LOGO! functions