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Why is my M580 Hot Standby EIO intermittent?

Published date: 22 July 2019

Upon setup of the M580 Hot Standby system with EIO, the drop health seems to come and go.

Product line
Modicon M580

One common reason for this is that the service ports of the CPU are connected to each other. This is usually done using a switch. With an M580 Hot Standby pair, it is not allowed to put the native CPU service ports on the same network.


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