PLC Safety Signature and Date/Time to show in WinCC-OA from Siemens PLC

[yeshwarya]

Dear Team,

I am using Siemens PLC S7-400 and want to show PLC time and Safety Signature in SCADA. But in WinCC-OA i am unable to receive data in proper format.


Data from PLC :: Date and Time in DTE format In SCADA- Data format available is Int 32/Float 32... But no Date and Time Format

For Character

Data from PLC :: Safety Signature in Character format In SCADA, Character format is not available.


Please provide the solution on above 2 queries.

[Gertjan van Schijndel]

The PLC time can be read from the '.Time.Value' if the [s7] config entry 'ReadPLCTime = "Y"' has been set.
For other DATE_AND_TIME values the transformation 'dateTime' is available. This information can be found in the help under: Drivers -> S7 -> Defining the peripheral address -> Possible S7 data types

For the safety signature reading it in a blob should be sufficient to get it a hexadecimal format. As transformation uint32 (or perhaps also blob) could be used. But by using the 'sprintf' function every value could be displayed in the hexadecimal format.

[yeshwarya]

Thanks for the reply,

I gone through the help provided by you, but was unable to find the proper solution.

For Diver connection, i am using S7-connection to connect S7-400 PLC to WinCC-OA. While creating the Structure, I define address type as date/time.

But While defining the Periphery address, there is no such data type to show date and type (int,bool,Float,Timer,Counter &symbloic address only).

Is there any example available for reference.


Please provide the solution, i stuck on site.....

[Gertjan van Schijndel]

Under address use a byte (or symbolic) type to be able to select the dateTime transformation.

[yeshwarya]

Thanks Gertjan van Schijndel,


As per your suggestion, I done the setting and its working fine. Now i am able to receive the data and time from PLC.


Also I raise the second query regarding the Character receive from PLC. In PLC my data type is Character and same i want to display in Wincc. This also resolved.

In Wincc-OA i define as "INT" and in transformation i select "int32" and for display in Text Field, i used Decimal to Hex converter script which i found in Google and its working fine.


Eg. 9AE1 in plc same i display in Wincc.

[Gertjan van Schijndel]

Yeshwarya Thakur wrote:

for display in Text Field, i used Decimal to Hex converter script which i found in Google and its working fine.

As I wrote earlier to display a value in the hexadecimal format, you can use the 'sprintf' function:

Code: Select all

sprintf(hexString, "%X", value);