800xA, two CS, two CN, communication between controllers in different CN
I need use 60 controllers.
I can not connect more then 48 controllers to one connectivity server.
If I use 2 connectivity servers with 2 control networks, how I can communicate between two controllers which are in different CN.
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The communication beweet controllers on different control network is still possible using IAC and MMS. The connectivity servers will act as routers provided TCP/IP forwarding is enabled in RNRP.
You may refer to "3bse034463-510_e_en_system_800xa_5.1_network_configuration" manual for more details on building large network configurations.
Below is the screen show from above manual.
With MMS (or IAC) as usual. The size of the network doesnt matter. RNRP handles all the routing between networks.
See the System 800xA Network Configuration Manual Section 2 for a description of how RNRP does the routing and Section 8 for how to configure Ethernet and Network equipment.
As an aside, I assume when you say "two CS" you mean two pairs of redundant connectivity servers ie. 4 CS in total.
Method1:Using separate control networks
If you use two separate control networks like area 20 & area 21 with redundant Connectivity servers then you can still able to communicatre between the controllers in the deffrent control networks by using RNRP routing method in both sets of connectivity servers(Area 20 & Area 21 Connecivity servers ex:
Area 20 Red.CS:172.16.80.21/172.17.80.21,172.16.80.22/172.17.80.22
then the MMS/IAC traffic will go via Control netowork-Client/Server Network & then back to router-control network here the main important thing is ensure that any one Connectivity server should be running else if both the connectivity of any control network fails means you will loose both live OPC DA/AE & MMS/IAC communication as well.
Method2:Using Common control network for both sets of connectivity servers.
Here by using single Area like only Area 20 for both sets of connectivity servers, you can achieve the MMS/IAC communication even in the loss of both connectivity servers of any sets of controllers(routers are not required)
means:controller set1(1to 30) connected to one set of connectivity servers
Controller set2(31 to 60) connected to second set of connectivity servers
here after establishing a IAC/MMS communication between set1 & set2 even if set2 both connectivity servers fails still data is available in set1 since same control network.
Always i prefer to go with the method2 if all controllers are sitting in the same control room.