Rockwell-automation T8480 Trusted TMR Analogue Output Module - 40 Chan Manual de usuario descargar pdf (Pagina 21)

Trusted

Module T8480

Issue 13 Apr 10 PD-T8480 21

alue

escription

7 Channel fault

6 Current demand cannot be met

5 Unused

4 Output energised (0+mA)

3 Open circuit in field wiring or load

2 Output de-energised (demand < 0mA)

1 No field supply voltage

0 Unused

Table 8 Rack 2: STATE value descriptions

3.2.3. Rack 3: AI

The AI board returns the field loop voltage at the output.

Channel Description

1 Field output channel 1 voltage

2 Field output channel 2 voltage

40 Field output channel 40 voltage

Table 9 Rack 3: AI descriptions

The voltage is the median value taken from the triplicated module. The voltage level is reported as an

integer, with the units being

1000

V. This may be used directly, scaled arithmetically or scaled using the

IEC1131 TOOLSET conversion tables.

To scale the value arithmetically simply divide the returned ‘integer’ by 1000 to return the voltage as

either a REAL or INTEGER as required.

The IEC1131 TOOLSET conversion tables may be used to convert the value to engineering units, in

this case voltage. The full-scale range for this number format is decimal ±32, corresponding to

physical range –32000 to +32000.

1 2 ... 16 17 18 19 20 21 22 23 24 25 26 ... 33 34

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Rockwell-automation T8480 Trusted TMR Analogue Output Module - 40 Chan Manual de usuario Pagina 21