The Software Loader supports the following modes:
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Full-Download: This mode automatically stops the PLC as the first step, similar to the behavior of
sldbefore version 1.0. -
Delta-Download in Stop: In this mode, the PLC needs to be manually stopped before initiating the delta-download. This ensures a secure state before the download.
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Delta-Download in Run: This mode allows for delta-downloads even when the PLC is in the RUN state. It provides quicker updates without having to stop the PLC. However, it is important to note that delta-download in run carries additional safety risks and must be used with caution.
DANGER
When the PLC is in the RUN state, it is actively controlling the process of the machine. Downloading a program change that does not align with the current processing state can potentially damage the machine. Siemens AG cannot be held accountable for such damage.
It is recommended to bring the machine into a safe state before downloading a program change to avoid accidental damage. The safe state might be an idle state in your machine process or setting the PLC into the state STOPPED.