Rockwell Automation 1395 Node Adapter Board - Manual (Page 28)

Chapter 3
Functional Description
3-16
Figure 3.9
Example PLC5/40 Controller Block Transfer Rung
10 12
Reset BTX Bits
On First Scan
of This Rung
Block Transfer
Ready Bit
I : 020
Block Transfer Read
Data Available
I : 020
Block Transfer Write
Enable Bit
EN
BT : 30:1
DN
Block Transfer Write
Done Bit
BT : 30:1
Block Transfer
Read Unsolicit
BTR
BLOCK TRANSFER READ
Rack
Group
Module
Control Block
Data file
Length
Continuous
2
0
0
BT30:0
N31.0
40
N
EN
DN
ER
Block Transfer
Write Data
BTW
BLOCK TRANSFER WRITE
Rack
Group
Module
Control Block
Data file
Length
Continuous
2
0
0
BT30:1
N32:0
4
N
EN
DN
ER
11
Block
Transfer Write
in Progress
I : 020
Block
Transfer Read
Data Available
I : 020
12 13 EN
Block Xfer
Wait Bit
I : 020
Block Transfer
Read Enable Bit
BT 30 : 2
Block Transfer
Read Data
BTR
BLOCK TRANSFER READ
Rack
Group
Module
Control Block
Data file
Length
Continuous
2
0
0
BT30:2
N33:0
40
N
EN
DN
ER
DN 12
Block
Transfer Write
Done Bit
BT 30 : 1
Block
Transfer Read
Data Available
I : 020
END OF FILE
Application
Specific Block Transfer for Rack 2 as a 1395 Node Adapter
NOTE: This example is using full rack
or half rack w/starting group 0 configuration
U
Block Xfer
Read Done Bit
BT 30 : 2
U
Block Xfer
Read Error Bit
BT 30 : 2
DN
ER
U
Block Xfer
Write Done Bit
BT 30 : 1
DN
U
Block Xfer
Write Error Bit
BT 30 : 1
ER
1
ONS
B3