Modbus TCP Comm Error between PP877K and redundant AC902F
I am trying to connect PP877K with redundant AC902F using Modbus TCP. The main point is to maintain connection when toggling the controller. This is my IP config for Modbus TCP:
Primary AC902F controller ETH1: 172.16.1.12.
Secondary AC902F controller ETH1: 172.16.1.7.
In panel builder 800 v6, I configured controller settings like attached pictures. After power on and downloading software, PP877K successfully connected to primary AC902 controller. But after I forcefully toggled the controller, PP877K couldn't connect to secondary AC902, and a "Comm Error Station1" Alarm appeared. The only way to reconnect was to toggle again.
So the question is: What's wrong with my controller settings in Panel Builder? And how do I fix it so that PP877K can connect to secondary AC902?
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