Rockwell Automation 1771-QA Stepper Positioning Assembly User Manual - Manual (Page 51)

3–29 Programming and Operation
Publication 1771-UM002A–EN–P – May 2000
Figure 3.17
Example Bidirectional Block Transfer
1
R
Block length code
Data Table
1 3 0
010
013
040
Output image table low byte
Data Addresses store the module
address, rack 1, module group 3, slot 0.
Input image table low byte
EN BLOCK TRANSFER READ
DATA ADDR:
MODULE ADDR:
BLOCK LENGTH:
FILE:
040
130
00
200–277
DN
013
07
113
07
113
1
W
1 3 0
1
R W
1
1
R
1
W
041
2 0 0 140
3 0 0 141
Storage locations of file addresses
200
300
377
Block Transfer Read File
Block Transfer Write File
Up to 10 words of data are read from the
module and located into the data table starting
at word 200
8
when default block length is
programmed.
EN BLOCK TRANSFER WRITE
DATA ADDR:
MODULE ADDR:
BLOCK LENGTH:
FILE:
041
130
00
300–377
DN
013
06
113
06
10529
10 Words, Max.
Addresses Available
for Storage
64 Words, Max.
211
212
277
Up to 64 words of data are written to the
bi-directional block transfer module starting
from word 300
8
when default block length is
programmed.
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