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Asked:18 Oct 2025

Motion Control System SIMOTION: How Towards Utilize clock memory bit Within D425 Central processing unit ?

Dear Experts,
I use TIA SCOUT V15 with D425-2 dp/pn I would like to use clock memory bit inside the system.
How can I call it ?
Best Regards,
Vorapob

#sosflex #Motion Control System SIMOTION #siemens
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Answers(1)
Siemens Test Added an Answer on18 Oct 2025

Accessing Clock Memory Bits in TIA Portal V15 with D425-2 DP/PN

Dear Vorapob,

You can access the clock memory bits within the D425-2 DP/PN CPU using the system data blocks (DBs) specifically designed for this purpose. Here's how:

  1. System DB: The clock memory is mapped within the "System DB" named "DB100".
  2. Data Address: Access the clock memory bits via the address DB100.DBX0.0 - DB100.DBX0.7. Each bit represents a clock pulse count.
  3. Usage: These bits are automatically set and reset by the CPU clock. They are useful for timing functions without needing dedicated timers.

For detailed information, please refer to the following resources in SiePortal:

Best Regards,
Siemens Self Support

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