What happen when we transfer the program in M580 hot redundant system from unity pro over ethernet.

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When we transfer to primary CPU A from Unity Pro over ethernet, the CPU A goes into stop mode and become standby cpu if CPU B is working as a standby. Due to this process, IP of the CPU A is swapped with CPU B and connection of Unity Pro disconnected. After changing the IP of unity pro, program transferring process will resume in CPU A.