Good day,

Is there a safety block that can calculate the rate of change from a standard "F_CH_AI" channel driver? I have PCS7 V9.1 with SIMATIC F Systems V6.3 installed and F Systems library V1.3. I wrote some logic that calculates the change every minute. This works fine, but seems a bit sloppy is there a single "F" block that can do this for me or a simple way to implement this code wit safety blocks?

Please see attached picture of logic tested. 

HI, 

You can also use F_DEADTM FB320 from F Library to achieve rate of change logic. Try it. 

JazTai

HI, 

You can also use F_DEADTM FB320 from F Library to achieve rate of change logic. Try it. 

 Thanks JazTai,

This block is exactly what I was looking for. Attached is a picture of the test we did with this block. I will definitely use this block in our project.