Rockwell Automation 1771-IFF/A,D17716.5.116 FAST ANALOG INPUT MODULE - Manual (Page 5)

Using This Manual P2–3
Publication1771Ć6.5.116 - May 1996
The 1771-IFF series A module can be used with any 1771 I/O
chassis. Communication between the discrete analog module and the
processor is bidirectional; the processor block-transfers output data
through the output image table to the module and block-transfers
input data from the module through the input image table. The
module also requires an area in the data table to store the read block
transfer data and write block transfer data. I/O image table use is an
important factor in module placement and addressing selection.
Compatibility and data table use is listed below.
Compatibility and Use of Data Table
C
Use of Data Table Compatibility
Catalog
Number
Input
Image
Output
Image
Read
Block
Write
Block
Addressing
Chassis
S i
Image
Bits
Image
Bits
Block
Words
Block
Words 1/2ĆSlot 1ĆSlot 2ĆSlot
Series
1771ĆIFF/A 8 8 24 41 Y Y Y A, B
A = Compatible with 1771ĆA1, ĆA2, ĆA4
B = Compatible with 1771ĆA1B, ĆA2B, ĆA3B, ĆA3B1, ĆA4B
Y = Compatible without restriction.
You can place your input module in any I/O module slot of the I/O
chassis. You can put two input modules in the same module group.
You can put an input and an output module in the same module
group.
Do not put the module in the same module group as a discrete high
density module. Avoid placing analog input modules close to ac
modules or high voltage dc modules.
Do not use this module with a cat. no. 1771-AL PLC-2/20, 2/30
Local Adapter.
For a list of publications with information on Allen-Bradley
programmable controller products, consult our publication index
(SD499).
Product Compatibility
Related Publications