Rockwell Automation 1756-RIO ControlLogix Remote I/O Communication Interface Module User Manual User Manual
Page 151
Publication 1756-UM534B-EN-P - November 2010
151
Adapter Mode I/O Map Appendix B
Block Transfer Write Structure
Block Transfer Write Structure on Monitored or Active Racks
Offset
Bit
Description
0
0…7
BTR update counter (increments each time BTR executes, 0…255)
8…10
BTR error code
11
BTR.ERR, block transfer read error
12…15
Reserved
1
0…7
BTW update counter (increments each time BTW executes, 0…255)
8…10
BTW error code
11
BTW.ERR, block transfer write error
12…15
Reserved
2…n
0…15
BTW data (64 integers, max)
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
44844
Block transfer writes on active and monitored racks are
mapped to ControlLogix inputs.