Technical data

Downloading and Uploading
19.2 Compiling and Downloading Several Objects from the PG
Programming with STEP 7
428 Manual, 05/2010, A5E02789666-01
Requirements for Downloading the Hardware Configuration
• CPUs must be in STOP mode.
• It must be possible to establish online connections to the CPUs. In the case of the selected
CPU or the selected block folder, password-projected CPUs require an authorized connection
or entry of a password ("Edit" button) before the "Compile and Download Objects" function can
be run.
• The interface of the target system that is being used for downloading must not be reconfigured
to any substantial extent:
- The interface address must not be changed.
- If you change the network settings, this may mean that not all the modules will be able to
be accessed.
• In the case of H-CPUs, you can select the CPU to receive the download (H-CPU 0 or H-CPU
1) before running the "Compile and Download Objects" function (Select the "CPU" object and
then click the "Edit" button).
• The following CPU parameters must not be changed:
- The maximum size for local data and communications resources on the CPU ("Memory"
tab)
- The password protection for the F-CPU ("Protection" tab)
• For each configured module, the following conditions must be fulfilled:
- The order number for the configured module must be identical with the order number of the
module that is actually inserted.
- The firmware version of the configured module must not be higher than the firmware
version of the module that is actually inserted.
- The station name, the name of the module and the plant designation must not have
changed since the last download. However, you can assign a new plant designation.
Tips on the Download Procedure
• All offline SDBs will be downloaded (that is, in addition to the hardware configuration, also the
connection SDBs and SDBs that were created through global data configurations).
• Downloading is only carried out if no errors occurred during the previous compilation process.
• During the download, any error feedback messages are suppressed. For example, if a CPU
memory bottleneck occurs, the data will be compressed automatically without the user being
informed.
• After the download is complete, the downloaded modules will be in STOP mode (except for
those modules that are automatically stopped and restarted without the user being informed).
Tip
If, after the download is completed, a message appears stating that the download of the object was
completed with warnings, then be sure to view the contents of the log. It may be that the object was
either not downloaded or was not downloaded completely.