ValueStatus enum

The ValueStatus enum is recommended as the means for using descriptive names when testing condition bits in a RtValue object's .Status value. The following code shows the descriptive name and corresponding bit numbers for each possible status. The ValueStatus enum includes the following values: 
enum ValueStatus {
    Good        =   0x0000000,  
    Uncertain   =   0x0000001,  // .ST field indicates Uncertain
    Bad         =   0x0000002,  // .ST field indicates Bad
    Comm        =   0x0000004,  //  not communicating
    Unknown     =   0x0000008,  //  cannot find
    Locating    =   0x0000010,  //  (usually temporary)
    NotSet      =   0x4000000,  
    QualityMask =   0xFFFFFFC,
    NoValueMask =   0xFFFFFFE,
}

Examples

Example Result 
if (valueRead.Status == ValueStatus.Uncertain) {
}
 Uses the value while indicating "uncertain" status. 
let cstat = v1.Status | v2.Status | v3.Status;
if (cstat && ValueStatus.NoValueMask) {
}
 At least one needed value is unusable; therefore, the total cannot be shown.