Ethernet Communications between 2 x S7 315 2PN/DP PLCS

Join Date
Jul 2007
Location
Kiruna
Posts
600
Hi,

I need to exchange some data between 2 S7 315 2PN/DP PLCs. I have 343-1 Lean Modules on each rack also but I'd like to reserve this for communications with upstream PLC communications.

Is this possible with my current hardware? Right now all I use the ethernet port on the PLCs is for SCADA communications (WinCC 7.0)

If so what is the recommeded approach? Which SFCs should I use?

Thanks
 
Just for my information:

Attention:
You cannot use communication blocks of library SIMATIC_NET_CP for CPU317-2PN/DP.

Is this because these blocks are for the 343-1 Modules?
 
You cannot use communication blocks of library SIMATIC_NET_CP for CPU317-2PN/DP.

Is this because these blocks are for the 343-1 Modules?
Yes.

The phrasing is a bit wrong.
It should be: "You cannot use communication blocks of library SIMATIC_NET_CP for the integrated PN port in CPU317-2PN/DP".
If there is a CP in the rack, like you have, then you can use the SIMATIC_NET_CP blocks.
 
To your original question.

For two 315-2PN/DP CPUs to exchange data via the PN ports, there are these methods:
1. Via S7 connections (setup in NetPro) and PUT/GET. This is the easiest way.
2. Vie Send/Receive and the blocks TCON/TSEND/TRECV/TDISCON. This can be a little daunting the first time.
3. Via PN IO. One CPU is PN IO Controller, and the other is a PN IO Device (aka I-Device). Notice that the other CPU can at the same time be a PN IO Controller for its own IO. The fastest most reliable way, but also the least flexible.
 

Similar Topics

I'm sitting here in an office at the customer's factory - all alone, everybody else is out on site :bawling: - and I want to do some testing, but...
Replies
9
Views
9,125
Hello, I've got a project where I need to get information from two ABB ACS880 VFDs onto the plant operator's screen (or alternatively, onto...
Replies
23
Views
2,509
Hey everyone! So I'm trying to get different data from my Eaton DG1 VFD to my studio project. So far my research has led me to something called...
Replies
10
Views
1,478
We have a cell that was done by an integrator. It has lots of intermittent comms issues that sometimes are minor and sometimes doesn't allow you...
Replies
5
Views
1,259
Hey everyone, working with an ABB drive for the first time, and I've found the sample programming that ABB provides for communicating with a...
Replies
11
Views
4,189
Back
Top Bottom