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T
TT_143969215-Regular Member
5-Regular Member
February 17, 2026
Solved

Logging DTL with OPC UA

  • February 17, 2026
  • 1 reply
  • 61 views

Hello,
I have a PLC program which send the DTL from the PLC, although I can log the timestamp based on the SQL side, is there anyway to log DTL directly from PLC to Kepware with the new/upcomming updates ?

Best answer by MRohilla

Greetings,

Sounds like Siemens.  DT (Date and Time) is supported, but I believe DTL (Date and Time Long) is still not.  I also believe this is true for Siemens TCP as well as Siemens S7 Plus. The workaround would be to switch the data type in the PLC to DT.

Regards,

Mohit 

1 reply

M
MRohillaCommunity Manager
Support
March 6, 2026

Greetings,

Could you please share the PLC model details with us?

Regards,

Mohit

T
TT_143969215-Regular MemberAuthor
5-Regular Member
March 6, 2026

I have problem when try to log the DTL data from PLC 1211DC and also 1511PN, both with the newest firmware

M
MRohillaCommunity ManagerAnswer
Support
March 16, 2026

Greetings,

Sounds like Siemens.  DT (Date and Time) is supported, but I believe DTL (Date and Time Long) is still not.  I also believe this is true for Siemens TCP as well as Siemens S7 Plus. The workaround would be to switch the data type in the PLC to DT.

Regards,

Mohit 

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