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How to resolve the "Cannot open connection to PLC" error on an HMI

Issue: The HMI is unable to communicate to the configured PLC over TCP/IP.

Product Line: XBTGT, XBTGK, XBTGH, HMISTO, HMISTU, HMIGTO, HMIGTU, HMIGK, iPC

Resolution: Often times there is more than one reason why this issue occurs. However, the most common causes are the following:

1) The IP address, Subnet Mask, or Default Gateway is setup incorrectly on the HMI or PLC. Ensure the settings are correct for both sides.
2) The wrong ethernet port is used on either the HMI or PLC. Ensure the Ethernet cable is plugged into the correct port on both sides.
3) The Ethernet Switch has a faulty port. Test with a different port on the switch or cycle power to the switch.
4) The Ethernet Cable is damaged. Replace the Ethernet Cable.
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