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A human machine interface (HMI) is the screen operators use to run and monitor equipment. A well-chosen HMI shows the right information clearly, makes alarms easy to understand and cuts down on operator errors, from a single machine up to a whole process line.

HMI Options

• Touchscreen operator panels – 4" to 15"+ displays for machine-level control
• Industrial panel PCs – run SCADA and advanced visualization software
• Text displays and keypads – simple, rugged interfaces for basic equipment
• Web-enabled and remote HMIs – view and control machines from a browser or mobile device
• HMI accessories – mounting kits, cables, protective covers and software

Choosing an HMI

Start with communication: make sure the HMI supports your PLC's protocol, such as EtherNet/IP, Modbus or PROFINET. Then size the screen for the information operators need and check the panel cutout, environmental rating and sunlight readability. Software licensing and ease of programming also affect long-term cost.

Centro offers HMIs and accessories from leading automation brands and can help you pick one that works with your existing controls.

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