I need a block that totalizes or simply add up a value from its input in an interval of five minutes. Say for the first five minutes, the flow is 900KPH, then 1000KPH for the next five minutes. This gives a totalized value of 1900KPH (in ten minutes). Basically, the block just adds up any value from its input. You're right, I have used such block in an ABB PLC and its working well. The closest block I found in Siemens PCS7 is the INT_P. But it does not work the way I want it to. There's an integral function in its computation.