What is required for an HMI panel connected to an Ethernet network?

A unique IP address is essential for an HMI (Human Machine Interface) panel connected to an Ethernet network because it allows the device to be individually identified within that network. Each device on an Ethernet network must have a distinct IP address to facilitate communication and data exchange without confusion or conflict. This unique identification ensures that commands or data requests sent from other devices reach the correct HMI panel without interference from other devices on the same network.

Having a unique IP address also plays a crucial role in network management and troubleshooting, making it easier to monitor device status and performance. If two devices share the same IP address, it can lead to communication errors, making it impossible for the network to function effectively.

While a static IP address (the first option) might be beneficial for stability in certain contexts, it is not a requirement for every HMI panel; dynamic addressing can also be utilized in some setups. An external power source (the third option) is typically dependent on the specific panel design rather than being a network requirement. High-speed internet access (the fourth option) may enhance certain functionalities but is not a necessity for basic operation on a local Ethernet network.