Allen-Bradley PLC-2/30

Block Transfer
Chapter 10
1013
Figure 10.7
Buffering
Data
014
1
4
0
030
050
130
Block Length
Code
R
10
114
R
10
150
152
050
052
 Block T ransfer Data (Buf fer)
 Block T
ransfer Data (V alid) 
Data in the buffer file
050052 will be moved
to 150152 when:
A. Done Bit 1 14/07 is set
(valid transfer)
B.Diagnostic Bit is TRUE
for each word to be
moved in rungs 57
(valid data)
||
00
()
02
010 010
( U )
00
010
||
11
( EN )
07
111 014
BLOCK TRANSFER READ
DAT A ADDR 030
MODULE ADDR 140
BLOCK LENGTH 03
FILE 050052
||
07
( L )
00
014 010
( DN )
07
014
||
02
( PUT )
111
010 150
| G |
111
050
||
02
( PUT )
222
010 151
| G |
222
051
||
02
( PUT )
333
010 152
| G |
333
052
||
07
114
||
||
||
Rung 1
Rung 2
Rung 3
Rung 4
Rung 5
Rung 6
Rung 7
Diagnostic Bit
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