Rockwell Automation 1772-LS_LSP,D17726.8.6 PROG/OPER MANUAL-MINI PLC-2/05 - Manual (Page 169)

Block Transfer
Chapter 14
14-14
Keystrokes: Now enter the block transfer write instruction.
[BLOCK
XFER]
The screen does not change
EN
Block Xfer Write
Data Addr:
Module Addr:
Block Length:
File: 030
100
01
110 DN
010
06
110
06
110Ć
0
Note that the words BLOCK TRANSFER WRITE are flashing.
Insert the following values. The cursor moves automatically through the
block transfer write instruction. The values are:
DATA ADDRESS 041
MODULE ADDRESS 130
BLOCK LENGTH 05
FILE
060-064
The completed bidirectional instruction should look like this:
EN
Block Xfer Read
Data Addr:
Module Addr:
Block Length:
File: 040
130
05
074 DN
013
07
113
07
070Ć
EN
Block Xfer Write
Data Addr:
Module Addr:
Block Length:
File: 041
130
05
064 DN
013
06
113
06
060Ć
Under certain conditions, it may be desirable to transfer part of a file rather
than the entire file. For example, a processor could be programmed to read
the first two or three channels of an analog input module periodically but
read all channels less frequently. To do this, use two or more block
transfer read instructions: one for each desired transfer length starting at
the same first word. The read instructions would have the same module
address, data address and file address but different block lengths. The size
of the file would equal the largest transfer.
Multiple Reads of
Different Block Lengths from
One Module