Rockwell-automation FactoryTalk Historian SE 3.0 Live Data Interface U Uživatelský manuál stáhnout pdf (Strana 33)

5 ● Point Configuration

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Sample Tag Configurations

See the following sample tag configurations:

 Scan Classes (page 27)

 Polled Tags (page 27)

 Advise Tags (page 28)

 Event Tags (page 28)

Scan Classes

Scan classes are defined in the startup file. Each /F= parameter defines a

scan class, which is numbered in order.

For example, if the .bat file reads

/F=2 /F=1:00 /F=1:30:00 /F=00:00:05,00:00:01

then these scan classes have been defined:

 Scan Class 1 has a scan period of 2 seconds.

 Scan Class 2 has a scan period of 60 seconds.

 Scan Class 3 has a scan period of 5400 seconds (90 minutes).

 Scan Class 4 has a scan period of 5 seconds, with an offset of 1

second.

Polled Tags

Polled tags are read once every scan period. To set up a polled tag, set

Location1 to match the /ID parameter, Location3=0, and

Location4=scanclass#.

For example:

Tag

InstrumentTag

Loc1

Loc2

Loc3

Loc4

Loc5

FiveSec.PV

ItemID1

1 2 ... 28 29 30 31 32 33 34 35 36 37 38 ... 61 62

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Rockwell-automation FactoryTalk Historian SE 3.0 Live Data Interface U Uživatelský manuál Strana 33