Reference        : blinker
Author           : CJ International
Date of creation : 08/07/98
Version number   : ISaGRAF 3.30
Description      : Sequence between 4 leds

This example shows how to make a sequence between 4 states,
represented by 4 boolean outputs.
Sequencing is time based, implemented using BLINK function block.
This application shows how to implement that in LD, IL, ST or FBD.
