Red Lion Controls GL350 Graphical Operator Terminal

Red Lion Controls GL350 Graphical Operator Terminal is an LCD‑based HMI designed to provide compact, on‑site graphical control for simple industrial processes. The unit features a monochrome display with 256 x 128 pixel resolution and CCFL backlighting for straightforward visualization in factory environments. Onboard processing includes a 32‑bit floating‑point math engine and expression evaluation, enabling basic data manipulation and on‑board calculations without a separate PLC. The GL350 also ships with an alarm log capable of recording up to 500 alarm events, a real‑time clock with battery‑backed backup, and unlimited password protection to secure access to configuration and trends. Networking and protocol options support direct and network connections to PLCs and controllers and accommodate multiple communication protocols, facilitating integration into existing control architectures. Variants in the GL350 family include the GL350 LCD version and GL350VF, with historical bulletins noting GL350‑E references that describe function‑key configurations. Use cases span small to mid‑size machine visualization, alarm monitoring, trend capture, and operator interaction on packaging, mixing, and other process lines where a simple graphical interface is required.