Adapter mode block transfer i/o – Rockwell Automation 1756-RIO ControlLogix Remote I/O Communication Interface Module User Manual User Manual
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Publication 1756-UM534B-EN-P - November 2010
Appendix B Adapter Mode I/O Map
Adapter Mode Block Transfer I/O
Offset Word 0
BT Read
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
Offset Words 2-
n
BTW Data
BTW Data (64 integers, max)
Offset Word 1
BT Write
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
BTR Error
BTR Update Counter
Block T
ransf
er
Read Err
o
r
BTW Update Counter
BTW Error
Block T
ransf
er
W
rit
e Err
o
r
Reserved
Reserved
I/O Rack
BT Read Structure - Input
0 1 2 3 4 5 6 7 8 9...
BTR
Block Transfer Write Data
1st
16-bit
Word
BTW
BT Write Structure - Output
0 1 2 3 4 5 6 7 8 9...
Reserved
Block Transfer Read Data Up To 64 Words
1st
16-bit
Word
I
O
I
I
I
I
I
I
I
O
O
O
O
O
O
O
0 1 2 3 4 5 6 7
Group
Group
Group
Group
1/4
Partial Rack
1/4
Partial Rack
1/4
Partial Rack
1/4
Partial Rack
Offset 0
Reserved Word
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
Offset 2-
n
BTR Data
BTR Data (64 integers, max)
Offset 1
Reserved Word
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
Reserved
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
Reserved
Mapped as ControlLogix input data for active and monitored racks.
Mapped as ControlLogix input data for monitored racks.
Mapped as ControlLogix output data for active racks.