We are planning to implement a SCADA system for a factory
process and would like your guidance regarding the correct architecture and
configuration.
My main question= HMI PCs with a limited tag license- how can they be operated in standalone mode?
System Requirements
The system will operate in a Server–Client architecture
under normal conditions.
During
normal operation, the Servers will read data from the field
devices.
In
case both Servers fail, all Client and HMI PCs must automatically
switch to standalone mode and read data directly from the field
devices.
System Structure
1) Servers (Hot-Standby Redundancy)
2) Operator SCADA Stations (Client PCs)
5
Client PCs: OS1, OS2, OS3, OS4, OS5
Each
should be able to access up to 8000 tags
Unlimited
tag license
Client
PCs have Access to plc and other devices.
3) HMI Client SCADA PCs
7
HMI PCs: DG1, DG2, DG3, DG4, DG5, DG6, DG7
Each
will access up to 1000 tags
Each
HMI has a 1500 tag license
HMI Clients
have Access to plc and other devices.
My main question= HMI PCs with a limited tag license- how can they be operated in standalone mode?