In Logic Manager Programming Tool, apart from configuring and using physical terminals and ports in programs, you can also set virtual points for data transmission during program operation.

  1. On the Device Configurator page, click "Virtual Points". The virtual point setting pane appears on the screen.
  1. Specify a name and type (boolean or float) for the virtual point, and then click to create a virtual point. The added virtual point is listed in the pane.
  1. Select the newly added virtual point to configure additional properties such as Data Point Name, Value, Unit, Description and Persistent.
  • Data Point Name: Set the name of the virtual point.
  • Value: Set the default value of the virtual point.
  • Unit: Set the measurement unit of the virtual point.
  • Description: Describe the virtual point.
  • Persistent: When checked, the virtual point value is retained after power failure.
  1. A virtual point name allows max. 24 characters (12 Chinese characters). Only supports English words, Chinese characters, numbers and underscores. Spaces within a name and identical names are not allowed.
  1. Max. 200 virtual points are allowed.
  1. All analog virtual points are of the float type. Only the first five numbers are valid if a virtual point value contains multiple digits.
  1. "Persistent" determines whether the virtual point value needs to be saved during power failure. Max. 50 such virtual points are allowed. Typically, setpoints of temperature, humidification and dehumidification need to be saved during power failure. For a virtual point of this type, after double-clicking the name in the list to add it to the programming page, you must not drag or use its Virtual Point Set function unconditionally in the main loop, as it may cause permanent flash damage. Instead, add necessary conditions in the main loop or use it in a loop with a longer time cycle.