Rockwell Automation 1794-IE4XOE2,1794-IE8,1794-OE4,D17946.5.2 FLEX I/O ANALOG MODULE User Manual

Page 49

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5–5

How Communication Takes Place and I/O Image Table Mapping with the DeviceNet Adapter

Publication 1794Ć6.5.2 - May 1996

Definition

Decimal Bit

Word

Read Word 5

Bits 00-14

Channel 4 analog data - 12Ćbit left justified two's complement

number; unused lower bits are zero; 4Ć20mA uses all 16 bits.

Read Word 5

Bits 15

Channel 4 analog data sign bit.

Read Word 6

Bits 00-14

Channel 5 analog data - 12Ćbit left justified two's complement

number; unused lower bits are zero; 4Ć20mA uses all 16 bits.

Read Word 6

Bits 15

Channel 5 analog data sign bit.

Read Word 7

Bits 00-14

Channel 6 analog data - 12Ćbit left justified two's complement

number; unused lower bits are zero; 4Ć20mA uses all 16 bits.

Read Word 7

Bits 15

Channel 6 analog data sign bit.

Read Word 8

Bits 00-14

Channel 7 analog data - 12Ćbit left justified two's complement

number; unused lower bits are zero; 4Ć20mA uses all 16 bits.

Read Word 8

Bits 15

Channel 7 analog data sign bit.

Bits 00-07

Underrange bits (U) for individual channels (4Ć20mA current

input only)- Bit 00 corresponds to input channel 0, bit 01

corresponds to input channel 1, and so on. When set (1),

indicates either a broken or open input wire, or input current at

or below 4mA.

Read Word 9

Bits 08Ć14

Not used - set to 0.

Bit 15

Power Up bit - included in series B modules only. This bit

is always 0 in series A modules. This bit is set to 1 when

all bits in the configuration register (write word 1) are 0

(unconfigured state). The configuration register can be

cleared by either a reset, or by the user writing all zeroes to it.

Write Word 1

Bits 00-07

Full range bits (F) for individual channels - Bit 00 corresponds

to input channel 0, bit 01 corresponds to input channel 1, and

so on. Refer to range selection above.

Write Word 1

Bits 08-15

Configure select bits (C) for individual channels - Bit 08

corresponds to input channel 0, bit 09 corresponds to input

channel 1, and so on. Refer to range selection above.

Write Word 2

Bits 00-15

Not used - set to 0.

Write Word 3

Bits 00-15

Not used - set to 0.

Write Word 4

Bits 00-15

Not used - set to 0.

Write Word 5

Bits 00-15

Not used - set to 0.

Write Word 6

Bits 00-15

Not used - set to 0.

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