🖥️ Operator Dialogue

Operator Dialogue is Schneider Electric’s term for all human–machine interface equipment, now unified under the Harmony range.
It covers how humans talk to machines(inputs) and how machines talk back(outputs).

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🔵 1. Hardwired Tactile Dialogue — Buttons & Lights

For instance, physical control and direct status indication on machine panels.

• Inputs:
  Pushbuttons, selector switches, emergency stops(Harmony XB4/XB5)
• Outputs:
  Pilot lights, buzzers, tower lights

Used for basic control, machine states, alarms, and safety actions.

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🟣 2. Digital Graphic Dialogue — HMI Touchscreens

For advanced automation, data visibility, and diagnostics.

• HMI Panels:
  From simple text displays to high‑resolution widescreen touch HMIs
  (e.g., Harmony ST6, Harmony GTU)
• Industrial PCs:
  Rugged Windows‑based Harmony IPCs running SCADA, edge control, or supervisory software

Used for recipes, trends, alarms, parameter setting, and deep machine insight.

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⭐ One‑line summary

Operator Dialogue = the complete set of Harmony devices that let humans command machines (buttons/touchscreens) and let machines communicate back (lights/displays).