SAITEL DP - How to set up redundant SCADA servers?

[milica_dukic_]

Hello everyone,

In SAITEL project, we have a two redundant SCADA servers with following IP addresses : 10.2.201.10 and 10.2.201.11 (redundant). Physically this is one FO link. When the primary communication is broken, the SAITEL has to communicate with redundant server. Both servers never run at the same time. Is this a way (attached picture Saitel) how we can get this? Just put two addresses in Channel Setup/Channel/Remote IP List? Or is there more to it?

Thanks in advance.

[Iván_González · Accepted solution]

Hi Milica,

It's mostly OK as you show in your picture. However some important remarks to be considered though:

• The channel should be defined as "CALLED" since we are an IEC104 slave, not master.
• Events already sent to a SCADA server will not be sent to the backjup one if there's a switchover.
• This will only work well if we are sure that only one SCADA will be communicating at any given time. If that's not the case, the CPU will always engage with the last SCADA to send a request (and disconnect from the other one).

[milica_dukic_]

@Iván_González thank you for the answer.

Regards, 
Milica Dukic

[ZakariaRh]

Hi Iván! 

I would like to ask you a question about Saitel too. 

In one of my projects, Saitel is supposed to communicate with two servers, one for a Building Management System, and the second for an Energy Managements System. 
I keep getting communication errors in the BMS Server. the EMS works fine 
From your answer I first recognized that the Saitel is not multimaster capable. 
Did I got it right? 

Thank you! 

[AndreMelo]

HI @ZakariaRh 

SAITEL is multimaster, in your case, you must configure 2 different TCP ports, but it is a TCP thing.

Best Regards