Rockwell Automation 1771-PD PID MODULE (+DU) - Manual (Page 99)

Programming
Chapter 3
3Ć56
Figure 3.17
Example Data Table Locations for Bidirectional Block Transfer
EN ąBLOCK TRANSFER READ
DATA ADDR:
MODULE ADDR:
BLOCK LENGTH:
FILE:
040
130
00
233Ć 332
DN
013
07
013
07
EN ąBLOCK TRANSFER WRITE
DATA ADDR:
MODULE ADDR:
BLOCK LENGTH:
FILE:
041
130
00
257Ć 356
DN
013
07
113
07
013
1
1
R W
Data Table
BLOCK LENGTHCODE
1
1
1 3
3 0
0
1
2
2 3
5 3
7
1
R W
1
R W
Read Block Transfer
File
(Input Buffer)
Write Block Transfer
File
010
040
041
113
140
141
233
256
257
356
Output image table low byte
Data Addresses contains the module
address 130: rack 1, module group 3, slot 0.
Input image table low byte
ąR=Read bit
ąW=Write bit
Storage locations of file addresses
By setting the block length to default, 00,
the module will determine the number of words
up to 64 to be read to the PC processor.
By setting the block length to default, 00,
the module will determine the number of words
up to 64 to be written from the PC processor
to the module.
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