Program Changes - Siemens SIMATIC PCS 7 Operation And Maintenance

AS and OS expansions

7.2 Program changes

Deleting a connection
Once a connection has been deleted, you need to highlight the corresponding station and
run the "Download Connections and Gateways" function. This downloads the entire
connection configuration to the AS.
This function can also be performed when the CPU is in the RUN(P) operating mode. Check
the effects on the process in advance and change the charts associated with the connection
prior to the deletion.
Note
Loading the network configuration using the "Selected Stations", "Selected Station and
Partner Station", and " Stations on the Subnet" menu commands can only be performed
when the AS is in STOP because the HW configuration must be loaded as well.
7.2 Program changes
This section provides guidelines for making program changes to a standard process.
Additional regulations and procedural guidelines apply to F/FH systems in safety mode;
these are described in the section titled "Changes to the safety program or F signal modules"
(Page 92).
After you have completed compilation without any faults, you can download the user
program to test and run it on the target system. After you have compiled but not yet
downloaded the program, SIMATIC Manager will display an additional symbol at the lower
left corner of the closed chart folder in the component view.
The basics for program changes, especially the rules regarding maintaining delta download
capability, are described in the section titled "Download" in the "SIMATIC Process Control
System PCS 7 CFC for SIMATIC S7"
(https://support.industry.siemens.com/cs/ww/en/view/109748700) manual.
Requirements
You can download program changes when the CPU is in RUN-P mode. It is generally
possible to download changes if the following conditions are met:
● At least one complete download has been performed successfully.
● The download is performed with the program structure used most recently.
As soon as delta download capability is lost, the "Delta Download" selection is grayed out
and only a complete download can be performed.
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Compendium Part D - Operation and Maintenance (V9.0)
Operating Manual, 02/2018, A5E43228948-AA