Rockwell Automation 1793-OE2S FLEX INTEGRA ANALOG MOD - Manual (Page 11)

Publication 1793-6.5.1 - April 1999
Overview of FLEX Integra and your Analog Modules 1-3
Figure 1.1
An Example of Communication Between an Adapter and an
Analog Input Module
ADAPTER
ACTIVE FAULT
LOCAL
FAULT
24VDC
POWER SUPPLY
RIO ADAPTER
1794-ASB
Allen-Bradley
1
Flexbus
2
3
4
5
6
7
The adapter transfers your configuration data
to the module using a BTW.
Your ladder program instructs the
adapter to perform a BTR of the values
and stores them in a data table.
The adapter and module determine
that the transfer was made without error
and input values are within specified
range.
Your ladder program can use and/or move the data
(if valid) before it is written over 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.
The module converts analog signals
into binary format and stores these
values until the adapter requests their
transfer.
External devices transmit
analog signals to the module.
Allen-Bradley