322 Rockwell Automation Publication 1756-RM006K-EN-P - November 2018
RTSMissed (Status.28) BOOL Only used in real time sampling mode. Set to
true when
ABS (DeltaT - RTSTime) > 1 millisecond.
RTSTimeInv (Status.29) BOOL Invalid RTSTime value.
RTSTimeStampInv
(Status.30)
BOOL Invalid RTSTimeStamp value.
DeltaTInv (Status.31) BOOL Invalid DeltaT value.
Structured Text
Operand Type Format Description
DERV tag DERIVATIVE structure DERV structure
See Structured Text Syntax for more information on the syntax of expressions
within structured text.
Description
The DERV instruction supports a bypass input that lets you stop calculating the
derivative and pass the signal directly to the output.
When Bypass is The instruction uses this equation
Cleared and DeltaT > 0
where DeltaT is in seconds
Set
Affects Math Status Flags
No
Major/Minor Faults
None specific to this instruction. See Common Attributes for operand-related
faults.
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