| Status | Meaning |
| InLimit | The value from the interval <LL..HL>. |
| VLL | The value is lower than VLL. |
| LL | The value is lower than LL. |
| HL | The value is higher than HL. |
| VHL | The value is higher than VHL. |
| Transient | Transient status - there was executed a command to set the object value, but there has not been verified the setting of value by backward reading yet. |
| Default | Default value. |
| Weak | Weak value - the system does not consider this value as valid because there have not been fulfilled all the conditions of its validity. |
| Weak Cmd | Weak Command. |
| Weak Ans | Weak Answer. |
| Limits Problem | Crossing of the dynamic limits - the condition VLL<LL<HL<VHL has been broken. |
= TestLimit(DDEreference, Stat) |
| DDEreference | DDE reference in the format D_2000|STATUS!objname or D_2000|ARCH_STATUS!blname. |
| Stat | Status: Normal, Undefined, Out of range, Div by zero, Err. |
= TestLimit(D_2000|STATUS!U.Kx_O2_Ref_Plyn,InLimit)