I have some temperature analog inputs that I want to change the scaling from using C to F. I am able to adjust the scaling value and get the correct temp output, but the OUT_HI_LIM setting in the LIM block is set to low so it shows a fault for that sensor since the value is > the HI_LIM. Looking at the block offline and it has a default value of 100, but when I go online the default value is 129.6. Changing the default value (I tried changing to 250) doesn't change anything when online. I haven't been able to find where/how I can change this parameter or where it is getting it's online value from.
I only have experience with my one emerson system so I am not sure if this is a standard soft_ai block or something that was made for just my application. I suspect the answer is probably something really simple that I don't know.
Maybe a bit more complicated question would be is there an easy way to change a group of AI from being scaled from one set of units to another and back again. For example placing a button on one of the pictures that will convert the AI and their associated pictures / scaling from using kpa to psi, C to F and m to ft? Only thing I can think of is to make a set of blocks for each set of units and a set of pictures for each set of units and having the push button change you from using one set to the other set and back.
In reply to AggieRalph: