Manual

Using This Manual
Preface
P-2
Appendix Title Topics Covered
A Specifications
B Configuration Example
C Data Formats
Information on BCD, 2s complement binary, signed
magnitude
D
Block transfer with Mini-PLC-2
and PLC-2/20 processors
How to use GET-GET instructions
You can install your input module in any system that uses Allen-Bradley
programmable controllers with block transfer capability and the 1771 I/O
structure.
Contact your nearest Allen-Bradley office for more information about your
programmable controllers.
The 1771-IL series B module can be used with any 1771 I/O chassis.
Communication between the 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 and write block. I/O image table use is an
important factor in module placement and addressing selection. The
module’s data table use is listed in Table P.A.
T able P .A
Compatibility and Use of Data T able
Use of Data Table Compatibility
Catalog
Number
Input
m
Output
m
Read-
ck
Write-
ck
Addressing
Chassis
mb
I
m
age
Bits
I
m
age
Bits
Blo
ck
s
Words
Blo
ck
Words
1/2-Slot 1-Slot 2-slot
Chassis
Series
1771-IL/B 8 8 15 37 Y Y Y A, B
A = Compatible with 1771-A1, -A2, -A4
B = Compatible with 1771-A1B, -A2B, -A3B, -A4B
Y = Compatible without restriction.
Related Products
Product Compatibility