2. Counter Design Examples 2.1 Product Mass Packaging X0 Y0 X1 Control Purpose: z Once the photoelectric sensor detects 10 products, the robotic arm will begin to pack up. When the action is completed, the robotic arm and the counter will be reset. Devices: Control Program: X0 C0 Y0 X1 Program Description: z Once the photoelectric sensor detects a product, X0 will go from OFF to ON once, and C0 will count for one time. z When the present value in C0 reaches 10, the Normally Open contact C0 will be closed. Y0 = ON, and the robotic arm will begin to pack. z When the packing is completed, the robotic arm action completed sensor will be enabled.
X1 will go from OFF to ON and RST instruction will be executed. Y0 and C0 will be reset for the next packing task. DVP-PLC Application Examples 2-1 Device Function X0 Photoelectric sensor for counting products. X0 = ON when products are detected. X1 Robotic arm action completed sensor. X1 = ON when packing is completed. C0 Counter: 16-bit counting up (general purpose) Y0 Robotic arm for packing CNT C0 K10 RST Y0 RST C0