Functions
5.12 Accelerating startup
PROFINET with STEP 7 V15
Function Manual, 12/2017, A5E03444486-AH
253
The PROFINET functionality "prioritized startup" enables PROFINET IO applications in
which machine parts or tools and their IO devices have been permanently replaced. Waiting
times of several seconds between the scheduled processes of the restart are reduced to a
minimum by this optimization. This accelerates the production process with alternating IO
devices (PROFINET functionality "docking systems"), e.g. in tool changer applications, and
enables a greater throughput in production.
The PROFINET functionality "prioritized startup" also offers a considerable increase in
performance for applications where a quick startup time of the IO devices after "power on" or
after station failure / station return is required, or when activating IO devices.
You can use prioritized startup, for example, for changing tools for robots in the automotive
industry. Typical tools are, for example:
● Welding guns
● Positioning tools for the manufacture of car body parts
Figure 5-96 Example configuration of a tool changer: Tools 1-3 configured with "Prioritized startup".
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