Scanner mode block transfer i/o – Rockwell Automation 1756-RIO ControlLogix Remote I/O Communication Interface Module User Manual User Manual
Page 139
Publication 1756-UM534B-EN-P - November 2010
139
Scanner Mode I/O Map Appendix A
Scanner Mode Block Transfer I/O
BT Read Structure - Input
0 1 2 3 4 5 6 7 8 9
BTR
Returned Read Data
1st
16-bit
Word
BTW
Block Transfer Control Read Structure
BT Read
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
Returned Read Data
Offset 2…n
Read Data Returned by the Block Transfer
BT Write
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
BTR Error
BTR Update Counter
Block T
ransf
er
Read Err
o
r
Read Done
M
anual M
ode Only
BTW Update Counter
BTW Error
Block T
ransf
er
W
rite Err
or
W
rit
e Done
M
anual M
ode Only
Reserved
Block Transfer Control Write Structure
BT Read
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
Write Data Container
for BTW Module
Offset 2…n
Write Data Container
BT Write
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
BT Read Length
BT Write Length
B
T W
rit
e
Enabled
M
anual M
ode Only
C
ontinuous M
ode
M
anual M
ode Only
Reserved
Res
Res
B
T Read Enabled
M
anual M
ode Only
C
ontinuous Read /
B
T I
nhibit
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
BT Write Structure - Output
0 1 2 3 4 5 6 7 8 9
BTR
Write Data Container for BTW Module
1st
16-bit
Word
BTW
I/O Rack
Scanner Mode
Block Transfer I/O
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