Rockwell Automation 1772-LS_LSP,D17726.8.6 PROG/OPER MANUAL-MINI PLC-2/05 - Manual (Page 166)

Block Transfer
Chapter 14
14-11
Keystrokes: In this example, you enter a 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 instruction. The values are:
DATA ADDRESS 041
MODULE ADDRESS 130
BLOCK LENGTH 05
FILE 060-064
The instruction should look like this:
EN
Block Xfer Write
Data Addr:
Module Addr:
Block Length:
File: 041
130
05
064 DN
013
06
113
06
060Ć
Purpose: Bidirectional block transfer is the sequential performance of both
operations. The order of operation is generally determined by the module.
Two rungs of user program are required, one containing the block transfer
read instruction, the other containing the block transfer write instruction.
When both instructions are given the same module address, the pair are
considered as bidirectional block transfer instructions. Figure 14.6 shows
an example rung containing a bidirectional block transfer instruction and
the data table areas used by the instruction.
Bidirectional Block Transfer