Peripheral connections expand the functionality of an HMI by allowing it to interface with external devices beyond the core control system. These connections enable the HMI to interact with hardware such as scanners, printers, cameras, and communication devices, turning it into a more versatile and integrated part of the overall system.
Through peripheral connections, HMIs can capture input data, provide additional output options, and support real-world interactions that go beyond standard screen-based control. Devices like barcode scanners and RFID readers allow for fast and accurate data entry, while printers and storage devices enable reporting and data export. Cameras can provide visual monitoring, and communication interfaces such as Wi-Fi or cellular connectivity extend access to remote systems.
These features are typically implemented through standard interfaces such as USB, Ethernet, or serial connections, making integration straightforward across a wide range of devices. Once connected, peripheral devices interact with the HMI through configured objects or system features, allowing their data and functionality to be incorporated into the application.
Overall, peripheral connections enhance the HMI’s role by bridging the gap between digital control and physical interaction, enabling more efficient workflows, improved data handling, and expanded system capabilities.
Barcode Scanner
Barcode scanners can be connected to an HMI to input data quickly and accurately by scanning codes. The scanned data is typically written to HMI or PLC registers, enabling functions such as product identification, tracking, or automated data entry.
Cellular Data Connectivity
Cellular data connectivity allows an HMI to access a network using a mobile data connection, typically through USB tethering or a cellular modem. This enables remote access, monitoring, and communication in locations where wired or Wi-Fi networks are not available.
Printing from an HMI
Printing from an HMI allows system data, logs, reports, or screens to be sent to a connected or network printer. This is commonly used for generating hard copies of production data, receipts, or operational records.
RFID Reader
RFID readers can be integrated with an HMI to read tag data for identification and access control. This is often used for user authentication, tracking items, or triggering actions based on scanned RFID tags.
Web Streaming (USB Camera)
Web Streaming with a USB camera allows an HMI to display live video from a directly connected camera. This provides real-time visual monitoring of equipment or processes without requiring a network-based camera.
Wi-Fi
Wi-Fi enables an HMI to connect to a wireless network, providing flexibility in installation and communication. It supports functions such as PLC communication, remote access, and data exchange without the need for physical Ethernet connections.