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Topic starter
Hi,
I did have a question to ask. When PcVue is IEC104 Server, what is the maximum number of clients already requested (or configured) by a customer?
Have you (or any customer) ever configured an architecture with many clients connecting to PcVue, having the role of IEC104 Server?
Afterwards I had the opportunity to discuss with Manu who gave me precious information. Here they are:
First of all, he posted in another thread (Guinness Book) an existing project with 400 IEC104 devices (PcVue as IEC104 client) which will be extended to 600.
It is for information because is it not the main subject here.
We should also recommend to split real-time servers for each set of 500 devices.
Then one customer wanted the confirmation about the value 10 which is the maximum that can be input in IEC104 Server settings.
It is correct but what you should know is:
1/ The default value is 5 and if you set a value greater than 10, the value 10 will be kept (maximum authorized)
2/ This maximum value applies on each outstation
3/ This maximum value only applies for option 'Accept connection from any clients'
4/ Again, this maximum value doesn't apply for option 'Accept only connections from these clients'
*Don't get me wrong* 😉 It does not mean unlimited!!
Unfortunately, we have no use case of the maximum yet. If you have any, please share.
Regards
Edouard
Posted : 17/03/2021 10:01 pm
"Don't put words in my mouth" in direct translation in our language is to say don't make me scold you with bad words. 😉
Anyway thanks for the write up and the information Edouard. If I understand from your article :
In outstation property - allowed clients, if we choose "Accept connection from any client", the limit is the same as what is configured in max connections.
If we choose "Accept only connections from these clients", then we can set as many as we like.
Correct?
Posted : 17/03/2021 11:31 pm
Topic starter
Correct Kantha, when we select 'Accept only connections from these clients' we can set as many clients as we like.
Posted : 18/03/2021 9:11 am
Thank you Edouard
Once your customer will implement his clients you will be able to add a new post in the Guiness Book
Nico
Posted : 22/03/2021 4:51 pm
While important in T&D systems, and lots of data could be monitored and control, there is no reason why such interface would see many clients connected.
I would be interesting in knowing the expected number of IEC 104 clients connected on PcVue in the project Edouard is talking about.
(I know of a customer project where this number was much larger than it should have been, but it was a corner case, someone who replaced the built-in networking mechanism by IEC 104 interfaces, so all PcVue clients were connected to servers using IEC 104. Was before we had IEC 104 at all, they used a 3rd party product on top of PcVue).
Posted : 22/03/2021 7:39 pm
One another real case looking like yours: I remember the IT of one of our customer had a simple rule: No no-standard protocol allowed on the network. Due to this strict rule we had to use OPC-DA instead PcVue networking....
And I agree, Edouard, it should be good for us to know the customer's case
nico
Posted : 22/03/2021 7:59 pm
Topic starter
I did not confirm with a meeting but here is what the customer asked for:
National dispatch with 10 clients, only 1 client connected to PcVue at a time.
Region dispatch with 6 Clients, only 1 client connected to PcVue at a time. 3 dispatches in total.
Operations centre with 2 Clients, only 1 client connected to PcVue at a time.
Thus 3 Outstations are going to be declared in PcVue
1 configured with a list of 10 clients but only 1 should connect at a time
1 configured with a list of 18 clients (6 x 3) but only 3 should connect at a time
1 configured with a list of 2 clients but only 1 should connect at a time
Concurrent IEC104 client connections = 5
Posted : 23/03/2021 11:46 am
Thank you Edouard, these figures are very much in line with what I was expecting.
Posted : 23/03/2021 1:14 pm
Hi Kantha
Yes you sump it up correctly.
Regarding the maximum number of client connected to our 104 server I don't have any used case giving me this number.
As Edouard said it would be good to have some return from our customers.
Have all a good day
Posted : 23/03/2021 6:11 pm