Rockwell-automation FactoryTalk Historian SE DataLink 4.2 User Guide Manual do Utilizador descarregar pdf (Página 42)

●

FactoryTalk Historian DataLink User Guide

Example:

To see the current value of the sinusoid tag, the following arguments are

set for the Current Value function:

Tagname = sinusoid

time at left

The resulting function array appears as:

Archive Value

Retrieves a FactoryTalk Historian point value, or evaluates an expression

corresponding to a specified time stamp.

Required

Arguments

Tagname or Expression

Timestamp

The time reference used to retrieve the archive value from

FactoryTalk Historian, which can be a fixed

time value

(page 21) or

expressed relative to the current time.

1 2 ... 37 38 39 40 41 42 43 44 45 46 47 ... 163 164

Sem comentários

Rockwell-automation FactoryTalk Historian SE DataLink 4.2 User Guide Manual do Utilizador Página 42