Rockwell-automation 1794-IJ2XT FLEX I/O Frequency Input Modules User M Instrukcja Użytkownika Pobierz pdf (Strona 14)

Publication 1794-6.5.11 - September 2011

4 Overview of the Frequency Input Module

Typical Communication between a FLEX I/O Module and an Adapter

FREQ

GATE

FREQUENCY INPUT 2 CHANNEL

1794-IJ2

F0F

FREQ

GATE

OUT

45339

The adapter transfers your configuration data

to the module using a BTW.

FlexBus

Your ladder program instructs the

adapter to perform a BTR of the

values and stores them in a

data table.

The adapter module determines that the

transfer was made without error and

input values are within specified range.

Your ladder program can use and/or

transmit the data (if valid) before it is

overwritten by the transfer of new data in

a subsequent transfer.

Your ladder program performs BTWs to

the module when you power it up, and

any time you wish to reconfigure the

module.

External devices

transmit frequency

signals to the module.

The module converts

frequency signals into

integer format and stores

these values until the

adapter requests their

transfer.

1794-ACN15

1794-ACNR15

1794-ACNR15K

1794-ADN

1794-AENT

1794-APBDPV1

1794-ASB

1794-APB

Adapter

1794-AENT shown

1 2 ... 9 10 11 12 13 14 15 16 17 18 19 ... 86 87

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