Rockwell-automation T80004 Application Note Field Loop Configuration Manual do Utilizador descarregar pdf (Página 25)

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AN-T80004 Field Loop Configuration

Issue 10 Jun 13 AN-T80004 25

Configuration

T8448 and T8449 inputs may be monitored by the application through either the STATE or the AI

boards on the equipment definition. There is no Boolean point available for digital inputs.

The AI board provides the measured voltage in 500

ths

of a volt (0V = 0, 24V = 12,000 etc.) This can be

changed to engineering units with a conversion table, as for analogue inputs.

The STATE board reports a numerical state according to threshold settings, exactly as for digital input

modules (except the voltage scaling is slightly different). Refer to the section on Digital Input

Thresholds above. The STATE input is an integer and reports 2 for off/open and 4 for on/closed.

Note that the LINE_FLT board will provide the same fault status as for digital inputs above.

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Rockwell-automation T80004 Application Note Field Loop Configuration Manual do Utilizador Página 25