S7-300 PLC in stop using PQW or PIW

[mulderm]

see:
https://support.automation.siemens....objaction=csview&extranet=standard&viewreg=WW

 

[JRW]

No
You don't need another CPU
Lets figure out what's wrong with your dp reads and writes sfc14 and 15

What error do you get?

 

[mulderm]

No error.
But happens nothing.
See also supported link by siemens

 

[TurpoUrpo]

You need to use sfc 14 and sfc 15 for 10 pd.

sew has example on their site if that is too difficult otherwise.

 

[JRW]

But you need to adjust your addresses up. So start with 256 in your sew address range and use the sfc's
Try it

 

[JRW]

Get it working?

 

[mulderm]

IT IS WORKING!!!!!!!!!
Thank you for all the help.
Range adress from 256 is not working, but range from 88 dec is working.
The SFC14 and SFC15 is also working (didn't expected).
See attachment!
Again: Thank you guys for the help!

Greetings,

mulderm

 

[TurpoUrpo]

In siemens you need to use sfc's for other than 1,2,4 byte lenghts of consistent data. I wonder how is 256 not working but 88 is..

 

[JRW]

Good
Now make a nice reusable function block out of it.

I also wonder why 256 doesn't work unless his analog module uses that address

 

[KalleOlsen]

It should also have worked with IW/QW access (without using SFCs) since it now lays in the process image area.

Must be blocked by the ghost of the Flying Dutchman?

 

[TurpoUrpo]

It should also have worked with IW/QW access (without using SFCs) since it now lays in the process image area.

Must be blocked by the ghost of the Flying Dutchman?

Yes, that is true indeed. There is some fish in the pond i think.