Hi All,

Looking for some urgent assistance.

I have just installed a CP343-1 Lean to a 319-3PN/DP CPU so that the onboard Port can be dedicated to PN only.

The machine was communicating with 4 other PLC's using PUT/GET, WinCC V7.5 and of course the PG.

Now I am only able to communicate with two PLC's, WinCC and not the PG.

NCM diagnostics shows only 5 connections, and I can swap from one PLC to the other by deleting and recreating the appropriate connection in NetPro. I have never been able to communicate with the PG at all.

See the screenshots for the NCM diagnostics.

Any help much appreciated, don't want to spend New Years here.

Regards

Mark

mpain

Now I am only able to communicate with two PLC's, WinCC and not the PG.

 if now there are only four connections working,.. I am guessing they all over S7 protocol.

CP343-1 Lean communication load is limited by 4 S7 connections.That means 2 Put/ 2 Get jobs simultaneously).

So, try to separate protocols

as follows:

• put all plc connection are over ISO on TCP protocol;
• put other connections over S7 protocol;
• or use full-fledged CP343-1 (not Lean vesion);
  

For its part CP343-1 can handle with 8 Put/8 Get jobs simultaneously. That's the point.

Thanks HCBM,

much appreciated,

Does the PG also consume S7 connections?

Regards

Mark

mpain

Thanks HCBM,

much appreciated,

Does the PG also consume S7 connections?

Regards

Mark

PG with both, older MPI port and Ethernet port onboard communicates over S7 connection.

Please find attached page where it is clearly seen.

Also, the other day made a discovery for yourself.

Still no realized if it is bad to be only server for S7 communications or not. I am about CP343-1 Lean.

For a better understanding see attachment.

asked here.