Rockwell-automation 1794-ASB/E Remote I/O Adapter Module User Manual Instrukcja Użytkownika Pobierz pdf (Strona 37)

3–3Communicating with FLEX I/O Modules

Publication 1794ĆUM009D-EN-P - April 2004

Complementary •you  need full FLEX I/O module

functionality, including combination

modules (1794ĆIB10XOB6), settable

input delay times on input modules

(1794ĆIB16, ĆIB8S), and fuse blown

indication (1794ĆOB8EP), for

example.

•you can locate equal numbers of

input and output modules in

separate chassis

•Eight 8 point modules in each chassis

equal 1/2 logical rack (when input

modules are installed in 1 chassis, and

output modules are installed in the

complementary chassis).

•Eight 16 point modules in each chassis

equal 1 logical rack (when input modules

are installed in 1 chassis, and output

modules are installed in the

complementary chassis).

•Provides maximum use of I/O image table

in 2 FLEX chassis (when input modules

are installed in 1 chassis, and output

modules are installed in the

complementary chassis).

•You must configure all modules

in both chassis as either 8Ćpoint

or 16Ćpoint.

•No combination modules

allowed

•Configuration/status data is not

accessible to user

Standard - 32 •you need full FLEX I/O module

functionality, including 32 point

modules, combination modules

(1794ĆIB10XOB6), settable input

delay times on input modules

(1794ĆIB16, ĆIB8S), and fuse blown

indication (1794ĆOB8EP) for

example.

•User has access to 2 words of input, 2

words of output for each digital module.

•Four modules equal 1 logical rack.

•No restrictions on module placement

•Maximum use of configuration/status and

combination modules

•Inefficient I/O image table

utilization

Complementary - 32 •you  need full FLEX I/O module

functionality, including combination

modules (1794ĆIB10XOB6), settable

input delay times on input modules

(1794ĆIB16, ĆIB8S), and fuse blown

indication (1794ĆOB8EP), for

example.

•you can locate equal numbers of

input and output modules in

separate chassis

•Eight modules in each chassis equal 2

logical racks

•Provides maximum use of I/O image table

in 2 FLEX chassis (when input modules

are installed in 1 chassis, and output

modules are installed in the

complementary chassis).

•All digital I/O modules are

configured as 32Ćpoint.

•No combination modules

allowed

•Configuration/status data may

not be accessible to user

(depending on module type).

The amount of data accessible to the processor in the 5 addressing

modes is illustrated below. Note that the shaded areas represent data

not accessible by the processor.

1 2 ... 32 33 34 35 36 37 38 39 40 41 42 ... 71 72

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