We are installing Ignition with Clustering on-top of an existing Redundant PLC System.
PLC 1 and PLC 2 functionality.
Both PLC’s are evaluating each other and decide based on numerous aspects which one will be the MASTER.
The Master PLC is the one with the up to date DATA, the Slave’s Data gets updated from the Master periodically and on Changeover. As a result Data on both PLC’s is not always the same, therefore the Masters Data has to be used.
We can detect in the Code which one is Active.
The OPC Server is tagged up for both PLC1 and PLC2.
Now my questions:
In order to Use the Correct data The Tags of the Master get Copied into Internal Tags. These are then used in Ignition.
Please note that there is more then 3000 tags per PLC involved.
Is there an easy way of doing this? Or any other ideas would be great.
Alarm Messages created in the PLC are particularly annoying me here.
Is there a way to swap the Master and Member in Ignition?
PC1 = Master & PC2 = Member.
Command to change over
PC1 = Member & PC2 = Master.