PLC Case Study: Essential for Payment Collection! 4 Steps to Control a Timed Lock Machine with Dynamic Passwords
The timed lock machine is a “payment collection trick” in PLCs—it seems like just reading the time and calculating a password, but it actually sets a “time alarm” for the device: when the agreed date arrives, the machine locks automatically, and after the final payment is made, entering a password unlocks it, which is very … Read more