Scaling 4-20ma for mb read out - Step 7

Hello all,

Think my brain has stopped working as I just keep going round in circles and just cant seem to figure out how to do this for some reason!! Basically I have a pressure transmitter reading from -1 to 1 bar giving a 4-20ma signal back to an AI card (Siemens S7 400). Basically I want to scale this to give an actual positive and negative mb reading so I can put it onto SCADA, but for I think my brain has already decided its having an Easter break as I just can't get my head round it. Any pointers would be good!

Thanks for any help.

Use FC105 (Scale) from the library and put in 1 and -1 in hi and lo input respectively. Or -1000..1000 to get mBar.

or am I getting your question wrong?