Hello!

I am trying to figure out acyclic communication with WRRWC and RDREC. In this example I am trying to read p1082 parameter (floating point, format should say  16#08.. it says 16#44 meaning error). I think problem is with RDREC not  WRREC.

More info should be in attachment, which is snaped few second after running the program. WRREC is finished and RDREC has some problems.

Using v90 pn, plc s7-1200, tia v13

thank you. I hope I can sort this out with your help.

EDIT: everything WRREC has W beside and everythig RDREC has R

hi,

there is no Error in the WRREC/RDREC-instructions, that you can see in the screenshot.

The information in the Status is only valid for one cycle.

To catch an error you need to save the Status-output when the Error-bit is true.

regards,

Thank you for reply. This is the error.

EDIT: Also which HW_ID should I use. I tried v90pn~Drive_1~Module_Access_Point and it works the same as v90pn~Drive_1~SIEMENS_telegram_111__PZD-1,,,

EDIT2: meaning of error

state conflict

DP slave or module not ready

What exactly does this mean?

Hello,

For the ID parameter you should use the Modul Acces Point HW- ID. It is also possible to use the HW-ID of the cyclic telegram of the drive object.

Have a look here:

https://support.industry.siemens.com/cs/ww/en/view/109743977

theres an example, which seems perfect for you. Title:

"SINAMICS V: Acyclic communication between SIMATIC S7-1500 and SINAMICS V90 via PROFINET"

hi,

are you using the WRREC and RDREC at the same time?

What is if you only program one of the two blocks?

Can you show us a screenshot where we can see how the blocks are programmed?

regards,

Pls know me how define the index number?

SimenH

suresh peddinti

Pls know me how define the index number?

 hi,

have a look in the manual of the SFC/SFB:

System Software for S7-300/400 System and Standard Functions Volume 1 and Volume 2

Chapter 8.1 and 8.2 are describing how the blocks work.

You find the structure of the Records in the relating manual of the module you want to read/write.

for example, the S7-300 modules, you find it in the manual, chapter A

hope this helps,

regards,