i have ladder logic of a sysmac scym5r cpu85 omron plc. i have to convert the program for use with other plc. there are few elements in the ladder logic which i cannot understand.please help me on the same 1. There are elements named kr (kr000,kr001,kr002...) can you explain the function of these elements. 2. how to know the type of timer. i.e. on delay,off delay,pulse and also the resolution of the timers. 3. function of ilc block.