Hi all,
I have Problem with read and write to a tags, I used ET200SP cpu and the Connection is done, but I still can’t read or write to a tags that connected to the unoptimised global DB, by the way the put and get also checkd by cpu configuration, so have any one idea About a solution for this Problem??
regards
Hey Sarmad,
Have you tried checking the protection level?
I’m guessing you are using the S7 protocol, although that is not a bad choice, I would check if that CPU isn’t capable of running an embedded OPC-UA Server, that would make things smoother and safer for you.
Hi Sarmad,
up till now I didn’t have such troubles to R/W to ET200SP.
There are I guess two possibilities you can try:
Try to check both.
Radim
HMMM, strange.
If i know there is possible to use “S7-1200” and “S7-1500” CPU.
Do you use correct Ignition driver? I have no idea where is a difference but two different driver were issued.
Another thing is Firewall. Did you kill it? Or at least open port for Profinet?
I don’t remember port number… 
I have faced the simillar problem.
I used existing tag names connected in past to Schneider CPU with the same Device name just with different driver.
I have used A1_N1FX with Schneider PLC,
deleted this device,
created new one A1_N1FX with Siemens S7-1200,
changed Device name in Tag OPC configuration
but
it didn’t work
after I changed device name to A1_N1FX_SIE (other than former one) and changed it
in Tag OPC configuratin it start work well.
It looks strange but this way helped me to get working app.
