-Signals selection, Decisions section and Actions Section
-The sequence of the logic should be left to right
-Input address cannot be used as an output address
-Input devices (Control devices) can be connected Parallel or Series:
-Output or Load device connection must be in proper order.
-Line number & Numerical Cross-Reference as per the order.
-Same input can use in multiple times in a program:
-Output cannot be used multiple times in one program, except in set/reset
and latch/ unlatch functions.
-Outputs address can be used as inputs address
-Input address cannot be used as an output address