I am trying to set a timer in S7 for 30 seconds. i have blocks that nead to read this accumulated value as it timing, and perform some other functions. any way to do this? also how can I program the value of the setting time. I ma using ths SFB4 "TON" function bblock. It has addresss for these variables but they are of the "time" data type. how can I read or modify these?