The Topcon OPUS A3e is a panel-mounted resistive touchscreen HMI terminal built around an NXP i.MX35 ARM processor running a trusted Embedded Linux operating system. Its 4.3″ TFT display (480×272 pixels, 400:1 contrast) supports both landscape and portrait orientation, while the compact 142×98×50mm footprint fits confined control panels and vehicle dashboards.

What makes OPUS A3e suited to mobile machinery applications?

Dual CANbus 2.0B ports compliant with ISO 11898 provide native connectivity to vehicle and off-highway equipment networks — supporting CANopen, CANfreestyle, and SAE J1939 protocols without external gateway modules. The 9–36 VDC supply range accommodates 12V and 24V vehicle electrical systems, including cranking-voltage dips. An integrated light sensor enables automatic display brightness adjustment, and the optional acoustic alarm (up to ~60 dBA) provides audible operator alerts. Programming environments include CODESYS 3.x (IEC 61131-3), OPUS Projektor, ISO-VT, and C/C++ for custom application development.

How does the I/O complement CANbus and Ethernet connectivity?

Four software-configurable analog or digital inputs and three digital outputs allow direct connection of sensors, switches, and indicator lamps without an additional I/O module — reducing component count in simple machine control architectures. Ethernet 10/100 and USB 2.0 Full-Speed (12 Mbps) handle higher-bandwidth communication for firmware updates, data logging, and integration with plant-level networks.