8. Rotation and Shift Design Examples 8.2 SFTL - Defective Product Detect Photoelectric sensor for detecting defective product X0 RESET X6 Y0 Electromagnetic valve pushing pole P for detecting the falling of defective products hotoelectric sensor 5 X X4 P for monitoring the cam hotoelectric sensor Recycle box for defective product Control Purpose: z Detecting the defective products (taller than normal dimension) on the conveyor belt by photoelectric sensor and pushing them into the recycle box at the 5 th position. The pushing pole will be reset when the falling of defective product is detected.
When errors occur, the disorder memory can be cleared and the system can be restarted by pressing RESET. Devices: Control Program: DVP-PLC Application Examples 8-3 Device Function X0 Photoelectric sensor for detecting defective products X4 Photoelectric sensor for monitoring the cam X5 Photoelectric sensor for detecting the falling of defective products X6 RESET Y0 Electromagnetic valve pushing pole X4 SFTL X0 M0 K5 K1 M4 SET Y0 X5 RST Y0 RST M4 X6 ZRST M0 M4 ZRST M0 M4 SFTL X0 M0 K5 K1 SET Y0 RST Y0 RST M4