+E84 is a critical [Interlock](/wiki/interlock) state, frequently encountered in [Automated Systems](/wiki/automated_systems) for material transfer. It signifies a secure handshake between equipment, ensuring safe, synchronized movement and preventing potential conflicts.
+## See also
+- [Process Control](/wiki/process_control)
+- [State Machine](/wiki/state_machine)
+- [Industrial Automation](/wiki/industrial_automation)
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