Article - CS291338

How to scale data from a PLC in PTC Kepware Products

Modified: 09-Jun-2025   


Applies To

  • Kepware Server (formerly KEPServerEX) 5.20.396.0 to 6.17
  • ThingWorx Kepware Server (legacy) 8.0 to 6.17

Description

  • How to scale data from a PLC in KEPServerEX (KSE) / ThingWorx Kepware Server (TKS)
  • I created an OPC channel and I want to scale a tag.
    • However, the scale option is blank.
      • I set the tag to float (it's a raw 4-20mA signal)
      • Is this possible? If so, what did I do wrong
  • We have Temperature data coming in as integer with engineering range -43 to 1000
    • We need to divide the value by 10 to get the actual value in one decimal point. How can we achieve this?
  • If a tag value is varying between 1-500, User would like to make a separate tag that would only show values between 190 and 250
  • Tag Scaling is not returning the expected values, User want 87 to show as 0.87 
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