Our SCADA is pulling analog I/O from a InSiteIG instrument for dissolved oxygen and total suspended solids. It is pulling modbus addresses; for example, register 30005 would be the sensor value for D.O. sensor 1. I am looking to improve on the basics of what has already been designed by using the I/O & Calculations, Analog (Calculation box ticked). I'm having somewhat of a difficult time in configuring such a tag. The way I currently have it is I created an analog status tag that looks at address 30005. It pulls up a whole value, but I want it to be displayed as a decimal. I had to create a calculation tag where the expression looks at the analog status tag then divides that by 100. After creating those two tags I created an analog status widget in which it is set to look at the analog status calculation tag and display that decimal value for the operators to see. My ultimate goal is to have only one created tag that both looks at the address for data then takes that value and divides it by a certain number. I then want to point that calculated value to an analog status widget. How do I create such a tag to do all of that.
Electronics/Electrical Technician
Hilliard Fletcher Wastewater Treatment Plant