Just in case i posted in the wrong forum section. :)

[Salty]

Greetings...

I have an exsisting setup of 6 Easy plc's networked. + 1 expansion on the 4th easy...

Easy 820 dc -rcx :net id 1 - Inlet & controll
Easy 820 dc -rcx :net id 2 - Filtering & Backwash control
Easy 820 dc -rcx :net id 3 - Cyclic and redundancy for the Waste Filters
Easy 820 dc -rcx :net id 4 - Waste discharge and clean up.
Easy 618 dc -re :net id 4.1
MFD-8B + CP8-NT + Display :net id 5 - General information and statistics
MFD-8B + CP8-NT + Display :net id 6 - Alarm's , fault's and trip's

It is for a waste water treatment plant, in a cement factory.
I have spanned the program over all 6 easy's, becuase we found that the easy would delay some functions ect when crammed into the first 3.

Now, after the job has been done and running for more than a year, the client expressed interest in intergrating the system with thier internal SCADA systems, via profibus DP, or even ethernet.

What i want to know is... "first time for me doing this" what would be the best practice, most cost effective procedure, without having to change the program *if possible.. how do i accomidate my clients needs?

He requires that all possible information, inputs, outputs, analog, totalizers, ect be availible to him via his internal structure...

Feel free to ask any questions should you require more info...

Note: they already have an exsisting SCADA provider, which is not OPC server.....

Thank you for any and all info in advance..

Kind Regards
Salty

[Shandley]

Man, oh man.

Ok, let me save you a tonne of trouble and suggest you buy all of the equipment first, hook it all up with dummy indicators, including motors if you are using timers and make sure it works. Even if you get it that far, it will be one heck of an integration. I am willing to bet my last cent that even after the program is perfected, there will be something not right. I would present all of this to the customer as worst case. IE: Implementation would mean a shutdown of the plant until testing is done.

This is something you don't want to have mistakes on.

It seems you have the knowledge, as you knew to separate several easys in order to get a faster response time but I don't know how far that knowledge of yours has taken you.

Good luck. I hope this forum picks up some day.