PowerLogic T300 - transfer between IEC 101 and IEC 104 communication links

[milica_dukic_]

Hello everyone,

In my current T300 project, if the IEC 104 channel is broken then the IEC 101 one should start running.

• Is there any setting that could be done in T300 in order to make this automatic (if IEC 104 link is down then IEC 101 should come up)?
• Or this transfer between communication links should be SCADAs and/or modems' responsibility?
  
  Any suggestion would be helpful.
  
  Thank you in advance.
  
  
  

[manuellison]

Hi Milica,

In T300 catalogue, page 29 you can find:

Channel association - Links
Some control centers or IEDs support double channels. The functionality can be
different for each protocol. The links are associations of two channels and they are
used to identify a double channel. Two modes of channels switching are possible:
• AutoSwitch: used with slave protocols. When the active channel stops receiving,
it switches to the other channel, which becomes active
• SwitchByMaster: used with the master protocol, the HU250 controls the channel
switching. A periodic switching between channels can be defined in order to
verify channel state TIME_FORCE_SWITCH

[JYPOC]

Hello Milica,

Like always, the devil is in the details so please provide the following a drawing of your communication architecture (from remote SCADA/DMS/ADMS to Easergy T300), including what modems are used (on the IEC 101 and on the IEC 104 links).

Thank you

[milica_dukic_]

@manuellison @JYPOC thank you  for your answers.

@JYPOC in attached pictures you can see the project of radio-link. I hope it would be helpful. 

Thank you in advance.

[JYPOC]

Thank you Milica,

What I was looking for in reality, is the logical communication architecture between the remote SCADA and the T300. 

In addition I don't see what is the IEC 101 link here (is it over TCP?).

Regards,

Jean-Yves

[jean-luc_batard · Accepted solution]

Hi Milica

Would be very useful to know your real application case as requested by Jean-Yves

Is there any legacy habit there?

Generally speaking, it is SCADA/Client responsibility to switch from one channel to another: therefore there is no automatic switching for IEC104/ 101 at T300 level.

The link notion referred by Manuel is applicable to DNP3 protocol

Best Regards

[milica_dukic_]

@JYPOC  Yes it is IEC101 over TCP/IP.

@jean-luc_batard  Thanks for this the information.

This is old SCADA system at it is still not clear what are the intentions of end customer with IEC101/104. We are still trying to clarify with them what is behind with "transfer link" part. All we know that they want to have two links main and backup: IEC101 serial, and IEC101 over TCP if we understood correctly.

Best regards and thank you very much for help.

Milica Dukic