This case uses “ZRST” to reset many device(for example:traffic lights).Because PLC steps capacity is limited.ZRST can reset many device to save capacity. There is many lights.PLC will control these lights with Y0-Y17.ZRST can close these lights quickly.
2. I/O list
|X6||Set ON Y0–Y17|
|X7||Set OFF Y0–Y17|
|Y0–Y17||Control traffic lights|
This case is a traffic lights control.X6 can set ON Y0–Y17.
Moving 32767 into K4Y0 will set on Y0–Y17.X7 can reset Y0–Y17.If user use RST to set OFF one by one.It will waste many capacity of steps.
Date: Feb 2017