HMI CP6xx with two ETHERNET Ports

HMI CP6xx with two ETHERNET ports on HMI with same IP and Layer 2 managed switch:

Recommended high availability connection. Option 2.

ETHERNET redundancy must be done by the application and Layer 2 managed switches.

HA example application program (Example_AC500_HA_CS31_V242.project) provides a sample application program for CP620 HMI. It has the required scripts to read data from the primary PLC. Also it provides an option for the user to select one of the two PLCs to read data. This is done using the IP override functionality. With minor modifications the HMI application program can be made application specific.

Note

Data writing from HMI to PLC is not recommended as it will write data only to the primary CPU.