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For Quantum Hotstandby: How can I know the status of the primary & secondary controller? Which is primary & which is secondary & which is in offline mode?

There is a system word %SW61, it is a readable register & is used to monitor the current machine status of the Primary & Standby.

This word consists of 16 bits, According to their status (0 or 1), we can determine the following:

1- First PLC is offline, primary or secondary
2- Second PLC is offline, primary or secondary
3- PLCs having matching logic or not
4- Hot standby is active or not

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