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Rockwell Automation 1791P-XXXX CompactBlock Distributed I/O on PROFIBUS DP Series D I.I. User Manual

Page 19

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CompactBlock Distributed I/O on PROFIBUS DP Series D 19

Publication

1791P-IN002B-EN-P - October 2003

The following table is an example of the word/bit definitions for an
8 in/8 out combination module.

The following table is an example of the word/bit definitions for an
8 in/8 out combination module that uses a 16 input expansion module.

The following table describes input and output bits used in both the example
tables above.

The PROFIBUS configuration tools require a GSD file in order to configure
the module’s parameters. The GSD file can be found at the Web site
www.ab.com/networks/gsd/.

Bit

07

06

05

04

03

02

01

00

Produces

I7

I6

I5

I4

I3

I2

I1

I0

Consumes

O7

O6

O5

O4

O3

O2

O1

O0

Bit

07

06

05

04

03

02

01

00

Produces 0

I7

I6

I5

I4

I3

I2

I1

I0

Produces1

I15

I14

I13

I12

I11

I10

I9

I8

Produces 2

I23

I22

I21

I20

I19

I18

I17

I16

Consumes 0

O7

O6

O5

O4

O3

O2

O1

O0

Byte

Bit

Description

Produces 0-2 00-07

Input Status bits - when the bit is set (1), the input is on.

Bit 00 corresponds to input I0, bit 01 corresponds to

input I1, bit 02 corresponds to input I2, and so forth.

Consumes 0

00-07

Output bits - when the bit is set (1), the output will be

turned on. Bit 00 corresponds to output O0, bit 01

corresponds to output O1, bit 02 to output O2, and so

forth.