Rockwell Automation 1785-LTx,D17856.2.1 Classic PLC-5 Programmable Controllers Users Manual - Manual (Page 108)

Transferring Discrete and BlockĆTransfer Data
Chapter 8
8-13
Figure 8.8
Example Block Transfer in PLCĆ5 Supervisory Processor
EN
BTR
BLOCK TRANSFER READ
RACK
GROUP
MODULE
CONTROL BLOCK
2
0
0
N7:10
DN
DATA FILE
LENGTH
N7:100
0
ER
PLCĆ5 adapterĆmode processor in rack 2
U
N7:15
12
N7:15
15
U
N7:10
12
N7:10
15
CONTINUOUS N
EN
BTW
BLOCK TRANSFER WRITE
RACK
GROUP
MODULE
CONTROL BLOCK
2
0
0
N7:15
DN
DATA FILE
LENGTH
N7:200
0
ER
CONTINUOUS N
BTR Error Bit
BTW Error Bit
BTR Enable Bit
BTW Enable Bit
COP
COPY FILE
SOURCE
DEST
LENGTH
#N7:100
#N7:300
64
13
BTR Done Bit Data Not Valid Bit
N7:10 I:020
10
BTR and BTW enable bits
N7:10
15
N7:15
15
BTR and BTW enable bits
N7:10
15
N7:15
15
READ DATA FROM ADAPTERĆMODE PROCESSOR
SEND DATA TO ADAPTERĆMODE PROCESSOR
BUFFER READ
DATA FROM
ADAPTERĆMODE
PROC TO
WORK AREA