需求
“Create ladder logic for an industrial roll-up door with open and close pushbuttons, limit switches, a safety edge, motor interlocks and an emergency stop.”
接著試試Add a flashing warning light while the door moves.Add a photo-eye that prevents closing.
這張圖裡有什麼
看懂背後的決策。
01
Use seal-in circuits to maintain motor command after button release
02
Interlock contacts prevent simultaneous open and close activation
03
Limit switches stop travel at full open/close positions
04
Emergency stop overrides all operation
Suitable for simple motor-driven sliding or rolling doors, gates, or barriers where manual pushbutton control with limit sensing and safety stop is required.