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NodeOPCUA reference documentation - public API
NodeOPCUA reference documentation - public API
node-opcua
timestampHasChanged
Function timestampHasChanged
timestamp
Has
Changed
(
dataValue1
,
dataValue2
,
timestampsToReturn
?
)
:
boolean
return if the timestamps of the two dataValue are different
if timestampsToReturn is not specified, both sourceTimestamp are compared
if timestampsToReturn is
Neither
, the function returns false
if timestampsToReturn is
Both
, both sourceTimestamp and serverTimestamp are compared
if timestampsToReturn is
Source
, only sourceTimestamp are compared
if timestampsToReturn is
Server
, only serverTimestamp are compared
Parameters
dataValue1
:
DataValue
dataValue2
:
DataValue
Optional
timestampsToReturn
:
TimestampsToReturn
Returns
boolean
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NodeOPCUA reference documentation - public API
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return if the timestamps of the two dataValue are different