Siemens Programming S7 300 Timer problem...

Hello Guys!


Let me explain what is my problem.

I have two timers T1 and T2, When i detect a metal the M8.0 memory will addressed and start the T1 Timer. T1 counts 2sec after 2sec on the out T1 will adderss the M8.1 what is the activation for T2.
T2 will count 4 sec. and this is one cycle. T1+T2= 6sec

I need to make that when i detected the metal the counter will start to work, but if the transporter stops working i want to pause the counting. and when the transporter start to work counter will start do count down wher it was paused. If it was stopt on 3 sec that means the T2 will start from 3.1 sec till 4 sec.

Sorry for my bad english and i hope that my explanation is clear.

Thanx, and best regards

I realy need a quick answer

Sounds like you need to use a retentive timer. Siemens have them, but I cannot remember which one is which out of the list.