Rules for Branch and Variable Naming

The following rules must be followed when creating branches and variables.

  • A variable name, including its branch, can have between 1 and 255 characters.
  • A full branch, including any full stops used to separate sub-branches, can have between 1 and 253 characters.
  • A branch can have between 1 and 11 sub-branches.
  • A branch must contain at least one variable. Any branch that you configure that does not include at least one variable will not be saved.
  • The characters that may be used are limited to alphanumeric plus the underscore.
  • Variable names may contain upper and lower case characters but they are not case sensitive. (BUILDING.FLOOR_01.AC_01._INFO is the same as Building.Floor_01.AC_01._Info)
  • The names of variables to be used in SCADA Basic must not start with a number.

If you disable syntax checking, variable names can include any printable character. However, this is not recommended as it may result in impaired functionality and is normally only used for compatibility with projects developed with older versions of PcVue.