How to find out PKW/PZD on profibus?

Dear experts,

I am trying to understand PPO(Pkw,pzd) in SIMOREG DC master.please guide me 

Thanks you sir

Thanks you sir,

How to read & identify 4PKW ,10 PZD in program.

Thanks you sir

Hello RmnChowdary;

You can use the adresses for each module ( 4PKW; 4PZD; 4 PZD; 2PZD) as shown in HWConfig.

The PKW words will be used by SFC 14 and SFC 15, because they must be read and written as a single telegram ("consistent data"). So search for SFC 14 and 15 in your program, that use PIW 800 /PQW 800 to read/write the parameters of the drive, as ANY pointers.

The PZD words can be accessed individually, by address, so search for PIW 808, PWQ 808.... to PIW 826, PQW 826 for the use your program makes if all 10 PZD words.

Hope this helps, 

Daniel Chartier 

Thanks you sir.

How do you determine  (800-808) belongs to PKW, (808-827) belongs to PZD ?

Please explain this logic

Thanks you sir

Hello RmnChowdary;

Look at your own screenshot, reproduced below.

The first line reserves 4 words (8 bytes) for PKW.

The second line reserves 4 words (8 bytes) for the first block of 4 PZD. PZD1 starts at PQW 808...

The third line reserves 4 words (8 bytes for the second block of 4 PZD.

The fourth line reserves 2 words (4 bytes) for the last 2 words of PZD.

In all, you have 4 PKW + 10 PZD ( 4 +4 +2 words PZD), to structure the contents of your PPO5 telegram.

Locating in your Step 7 program and analyzing SFC 14 and SFC 15 will contribute to your understanding, I think. If you still have doubts, I can suggest this short document; it is designed for MM4 and Sinamics drives, but the basis of Profidrive telegrams remain the same.

https://support.industry.siemens.com/cs/ww/en/view/8894584

Hope this helps,

Daniel Chartier 

Sir,

Thanksfor your help.

I checked this project it help to me but in our project  we used "DP PKW"

In that "AK_I,PNU_I,INDEX_I,START_PKW"

If possible explain this 

Thanks you sir

Hello RmnChowdary;

I do not recognize this DP PKW block, it looks like part of the parameters for a function block. I am not familiar with it at all. Where did you find it, and what is it used for (are there any comments attached to this block)?

Could you at least provide a screenshot or a file showing the complete block?

Hope this helps,

Daniel Chartier