Dear All,

In my project I need to read / write data with SQL DBs with user specific queries. Queries can be from Simple Insert / Update to complex codes. Write Now I use WinCC Flexible where I write codes in VBS & then trigger it. It works perfect for me but I'm getting problem with communication speed as the minimum update time for tag is 100ms so I can't trigger scripts with frequency of less than 100ms & neither tag will be updates at frequency of less than 100ms.

Regards,

plcbug

Dear Experts,

Is there anyone who can guide me. Thanks

.

Dear Rusil,

Thanks for reply but couldn't get you. Can you please elaborate.

Regards,

plcbug

hii,

on plc side you need to trigger one bit on exact time that you need ( look for cyclic interrupt ob, other than ob1 )

on hmi side :

you define this bit as discrete alarm, and when this discrete alarm activate, you just call your code from this alarm on activate event. after you execute your code just reset this bit.

br

rusli

hii,

i'm sorry i not read your problem correctly, hmi update tag limitation was 100ms you can't get lower than that. 

why not you logging your data temporary on plc, and later on this log will fetch by hmi.

br

rusli