Rockwell-automation 1771-IFF/A,D17716.5.116 FAST ANALOG INPUT MODULE Manual de usuario descargar pdf (Pagina 66)

7-4

Publication 1771Ć6.5.116 - May 1996

When bits 9 and 10 in block transfer write word 3 are set for “two’s

complement – data first configuration,” the block transfer read will

have the channel data first in the transfer.

Figure 7.2

Block Transfer Read in Two's Complement - Data First Configuration, SingleĆended

Inputs

Dec. Bits 15 14 13 12 11 10 09 08 07 06 05 04 03 02 01 00

Description

Octal Bits 17 16 15 14 13 12 11 10 07 06 05 04 03 02 01 00

Description

Word 1 Channel 1 Input Channel 1 Input

2 Channel 2 Input Channel 2 Input

3 Channel 3 Input Channel 3 Input

4 Channel 4 Input Channel 4 Input

⇓⇓⇓⇓

16 Channel 16 Input Channel 16 Input

17 HF EE CS RTS IS OR PU Diagnostics

18 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 Data underrange for channels 1-16

19 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 Data overrange for channels 1-16

20 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 Data polarity for channels 1-16

21 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 Offset Calibration Results

22 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 Gain Calibration Results

23 15Ćbit rolling counter - binary, 1ms resolution Time Stamp

24 Update rate - binary, to 1υs, with +4µs resolution Scan Time

Where: PU = Power up bit

OR = Out of range bit

IS = Invalid scaling bit

RTS = Real time sampling bit

HF = Hardware Fault

EE = EEPROM status bits

CS = Calibration status bits

These bits are set (1) at approximately the input range limits selected (Table NO TAG).

Data First Configuration

1 2 ... 61 62 63 64 65 66 67 68 69 70 71 ... 93 94

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Rockwell-automation 1771-IFF/A,D17716.5.116 FAST ANALOG INPUT MODULE Manual de usuario Pagina 66