Technical data

Editing Projects with Different Versions of STEP 7
7.5 Displaying Modules Configured with Later STEP 7 Versions or Optional Packages
Programming with STEP 7
190 Manual, 05/2010, A5E02789666-01
7.5 Displaying Modules Configured with Later STEP 7 Versions or
Optional Packages
As of STEP 7 V5.1 Service Pack 3, all modules are displayed, even those that were configured
with a later STEP 7 version and are thus unknown to the "older" STEP 7. Modules configured with
an optional package are also displayed, even if the required corresponding optional package is not
installed on the programming device (PG) used to open the given project.
In previous STEP 7 versions, such modules and their subordinate objects were not displayed. In
the current version, these objects are visible and can be edited to certain extent. For example, you
can use this function to also change user programs, even if the project was created on another
computer running a newer version of STEP 7 and the module (such as a CPU) cannot be
configured with the existing earlier STEP 7 version because this module has new properties and
new parameters.
The module "unknown" to STEP 7 is displayed as a generic, dummy module with the following
icon:
If you open the project with the appropriate STEP 7 version or with a compatible optional package,
all modules are displayed their standard way and there are no restrictions on editing.
PG with latest STEP 7 / with
optional package
PG with older STEP 7 / without
optional package
>>>---Project data--->>>
Represented by "known", latest
module
Represents the latest module as an
"unknown" module