Host Engineering Forum

General Category => General Discussion => Topic started by: LauraM on September 20, 2010, 10:41:45 AM

Title: DL 350 communication with C-More Basics
Post by: LauraM on September 20, 2010, 10:41:45 AM

Hi all, I'm a new user here. I'm looking at a project that needs to be up and running pretty fast, so I've been scanning manuals and trying to fit things together. I have a question that you folks of experience can help with.

In the "old days", depending upon the type of PLC & HMI that was used, you had to set-up data reads and writes to communicate. From what I've uncovered so far, it looks like when using C-More, and a 350 CPU, the only requirement is that C-More sets the tagname database information, and then it can read or write to the specified locations. Is it that easy, or did I miss something? (if so, please point me to a manual or user guide location)

Does the PLC logic need to do anything to initialize the com port?

I'm used to grouping data types that are exchanged between HMI and PLC, as much as possible. That still makes sense from a through-put sense, yes?

Thanks for any help!
Laura

Title: Re: DL 350 communication with C-More Basics
Post by: PLCGuy on September 21, 2010, 12:19:35 PM

Yes you can still group R's or other bits together to be used between the PLC and HMI. The beauty in using the C-more is the mapping is done for you. Just use the bits! Set up a test program. Create a button on the HMI, use a bit then watch it come on in the plc. Only thing when using the com port to set the baud and other things correctly for both.

Title: Re: DL 350 communication with C-More Basics
Post by: LauraM on September 21, 2010, 02:22:36 PM

Great! Thanks for your response.
I'll be doing a "live" test later in the week. Everything should be so easy.