HI

I am using a CPU317 and want to implement the BT_LT function, I do not understand how to create the DB for the rules. Does anyone have a DB created for the rules DB that they can post.  The example has the rules in a form that I done recognize as a data block?

Scott

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Split from Daylight Saving Time on CPU 315.

Have a look at the online help (marking FC61, then press F1),

you will find a detailed description for control-DB / UDT60.

I see the rules in help but do not understand how to enter it into the data block format in step 7.

scottbuda

I am trying to create the DB for use with the BT_LT, I am using step 7 and ladder.

I dont understand how to enter the rules in the db editor window, does anyone have a DB created that I could look at or download  Rule DB / UDT60.

Thank You,

Scott

 Hello scottbuda,

Your problem is summer/winter time changeover? I use this function block (FB) (below) it's easy to do, you can use a panel also, and change automaticly summer to winter and viceversa: 

Please have a look:

How do you do the summer/winter time switchover with WinCC

I use this FB with S7 300 and panel (OP/MP 177/277) but I think it's possible to use without panel also never tried.

Perhaps the attached example is helpfull

Import AWL source, generate UDT60 and build a DB from type UDT60.

I was able to figure out how to implement the rules DB and create a DST for use in my HMI's.

However is this correct, if I am synchronizing a CP343 with a NTP time server and then forwarding the time to a 317 CPU as a slave, the CPU time is always going to be GMT?

IBN-Service

Perhaps the attached example is helpfull

Import AWL source, generate UDT60 and build a DB from type UDT60.

This was indeed extra helpful. I've taken the liberty of converting your source code to English comments. You have two options:

1. Download attached AWL, import to "sources" folder inside PLC Program folder (Menu Insert->External Source...)
2. Create a new STL Source file (Menu Insert->S7 Software -> STL Source) and Copy-paste the below code.

In either option, you have to open the source and compile it (Menu File->Compile). UDT60 will "magically" show up in the "Blocks" folder.

BTW, do not forget you have to import std blocks that FC61 (BT_LT) is calling: