Write MSEC to S7 300 Siemens Controller

[JAG]

I am trying to write just MSEC to S7 300 Controller date/time using OI.SIDIRECT Aveva communication driver?
The old HMI (WINCC) tag is assigned to the address (DB905.DBD98).
New HMI: Wonderware Intouch 2023 Standalone application.
I have tried to use different canonical data types described in the SIDIRECT document to no avail. I have assigned a tag the following addresses:
1. DB905,TREAL98
2. DB905,DTL7,98
3. DB905,DTL98Byte7
** the second option halfway works. It performs the write but with a suffix of nanoseconds. For example when I write 2400, I get 2400.000000
Any suggestions would be greatly appreciated.
Thank you

 

[Lare]

Siemens mseconds on clock is 6th byte and also part of 7th byte.
It can be also little and big endian problem.


https://support.industry.siemens.com/cs/fi/en/view/21222026