Rockwell Automation 1771-DA,D17716.5.13 U MNL 1771-DA ASCII I/O MODULE - Manual (Page 175)

ASCII Module
PLC-2 Family Processors
Appendix A
AĆ7
Figure A.3
Example Data Table Locations for Bidirectional Block Transfers
1
R
Block length code
Data Table
1 3 0
010
013
040
Output image table low
byte
Data Addresses contains module
address 130: rack 1, module group 3,
slot 0.
Input image table low byte
R = Read bit
W = Write bit
EN BLOCK XFER READ
DATA ADDR:
MODULE ADDR:
BLOCK LENGTH:
FILE:
040
130
00
300- 347
DN
013
07
113
07
113
1
W
1 3 0
1
R W
1
1
R
1
W
041
3 0 0 140
4 0 0 141
Storage locations of file addresses
300
347
400
447
Read Block Transfer File
Write Block Transfer File
Read block transfer file length set to
00, which allows a 64 word transfer
Write block transfer file length set to
00, which allows a 64 word transfer
EN BLOCK XFER WRITE
DATA ADDR:
MODULE ADDR:
BLOCK LENGTH:
FILE:
041
130
00
400- 447
DN
013
06
113
06
11839
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