Reference        : Rf Std FB
Author           : CJ international
Date of creation : 9/2/94
Version number   : 1
Description      : this application shows the use in FBD
                   of standard function blocks

The following function blocks are used:
   SR : bistable (Set dominant)
   RS : bistable (Reset dominant)
   R_TRIG : rising edge detection
   F_TRIG : falling edge detection
   CTU : up-counter
   CTD : down-counter
   CTUD : up/down-counter




