6-26Communicating with Remote I/O

Bit Layout Diagrams for the Second Word Allotted to a Remote I/O Rack or an

Extended Local I/O Rack

N15:15

 

 

 

 

Reset Bits

 

 

 

 

 

 

Inhibit Bits

 

15

14

13

12

11

10

09

08

07

06

05

04

03

02

01

00

Not Used

Not Used

This Bit:

Corresponds to:

Inhibit Bits

 

 

 

00

first 1/4 rack

 

starting I/O group 0

 

 

01

second 1/4 rack

 

starting I/O group 2

 

 

02

third 1/4 rack

 

starting I/O group 4

 

 

03

fourth1/4 rack

 

starting I/O group 6

 

 

Reset Bits

08first 1/4 rack starting I/O group 0

09second 1/4 rack starting I/O group 2

10third 1/4 rack starting I/O group 4

11fourth1/4 rack starting I/O group 6

 

 

 

 

When you use a ladder program or the software to

 

ATTENTION

 

inhibit and reset an I/O rack, you must set or clear the

 

 

 

 

 

 

 

 

reset and inhibit bits that correspond to each quarter

 

 

 

 

rack in a given chassis. Failure to set all the appropriate

 

 

 

 

bits could cause unpredictable operation due to

 

 

 

 

 

 

 

 

 

 

 

 

scanning only part of the I/O chassis.

 

 

 

 

 

Publication 1785-UM012D-EN-P - July 2005

Page 98
Image 98
Bradley Smoker PLC-5 When you use a ladder program or the software to, Bits could cause unpredictable operation due to