SIEMENS LOGO! logic module LOGO! Software

LOGO! Software Overview

  • The user-friendly software for generating switching programs on the PC for single-user mode and network mode
  • Generation of switching programs in a function block diagram (FBD) or ladder logic (LAD)
  • Furthermore, testing, simulation, online testing and archiving of the switching programs
  • Professional documentation due to manifold comment and print functions

LOGO! Software Application

LOGO!Soft Comfort is the multilingual software for creating control programs for LOGO! on the PC. Every component of the LOGO! family can be programmed using LOGO!Soft Comfort.

LOGO! Software Design

The connection between LOGO! and the PC is made using the LOGO! PC cable (serial interface) or the LOGO! USB PC cable (USB interface).

For LOGO! 0BA7 and LOGO! 8, the connection is established via the integrated Ethernet interface.

Minimum system requirements

Windows XP (32-bit), 7 (32/64-bit) or 8 (32/64-bit)

  • PC Pentium IV.
  • 150 MB free disk capacity.
  • 256 MB RAM.
  • SVGA graphics card with minimum resolution 800 x 600 (256 colors).

Mac OS X

  • Mac OS X 10.4


  • Tested with SUSE Linux 11.3 SP2, kernel 3.0.76
  • Runs on all Linux distributions on which Java 2 runs.
  • Please refer to your relevant Linux distribution for the necessary hardware requirements.

LOGO! Software Function

  • Generation of control programs in the FBD and LAD languages (selectable). The functions are largely self-explanatory, and can be positioned on the drawing area using Drag&Drop.
  • Comprehensive documentation functions:
    Versatile printing options permit professional documentation.
  • Program simulation (offline):
    For pretesting of switching programs on the PC.
  • Program test (online):
    The current values of LOGO! are displayed on the screen.
  • Comprehensive, context-sensitive online help function.
  • Analog modem communication:
    for remote maintenance of LOGO!, with program upload and download as well as online test.
  • Network configuration incl. simulation
  • Diagnostics functions
  • Communication using the drag & drop function between several LOGO!
  • Graphic representation of references
  • Network mode for applications with data transfer between multiple LOGO!, but also between LOGO! and SIMATIC Controllers or SIMATIC HMI.
  • Import and export of I/O names, e.g. to Microsoft Excel
  • configurations for remote access via teleservice, app, Web server
  • Macros (user-defined functions) including comments, I/O name, password and parameter transfer
  • Status chart including saving on PC
  • Virtual keyboard for message texts
  • Message text display in online test

The following functions are available:

  • Basic functions (AND, OR, NOT, NAND, NOR, XOR, positive edge evaluation, negative edge evaluation)
  • ON delay
  • OFF delay
  • Current impulse
  • Latching
  • Retentive ON delay
  • Operating hours counter
  • Interval time-delay relay/pulse output
  • Up/down counter
  • Threshold switch
  • Pulse encoder
  • Year time switch
  • Time switch
  • On/off delay
  • Random generator
  • Edge-triggered interval time-delay relay
  • Analog trigger
  • Analog comparator
  • Analog delta trigger
  • Analog watchdog
  • Analog amplifier
  • Staircase lighting timer
  • Convenience switch
  • Message texts
  • Shift register
  • Softkey.
  • PI controller
  • Ramp function
  • Analog multiplexer
  • PWM function
  • Analog arithmetic function
  • Function for fault detection in the case of the analog arithmetic function
  • Astronomical clock
  • Analog filter
  • Mean value calculation
  • Min/max value
  • Stop watch