FM 350-2 direct data access without FC

Hello,

we use the counter FM350-2 in program with direct data access, means without special FCs by Siemens.

We read directly the actual values of the counter from periphery input area (byte 8 - byte 15), but we want to read also some diagnostic data from the counter like status, error, gate open etc. These might be in the beginning of the data interface (byte 0 - byte 7)  but we are not able to find any description of these bits/bytes.

I already found this description for different module type FM350-1, but not for FM350-2.

Does anybody know about this interface description?

Thanks.

Hi,

please check the following Link

https://support.industry.siemens.com/cs/de/en/view/88761721

This link contains also a Link to the FM350-2 manual.

Here you can read, that yo will need FC2. It must called each CPU cycle...

Regards,

Towome