Rockwell Automation 1771-IR Series D RTD Input Module User Manual - Manual (Page 24)

3–2 Module Programming
Publication 1771Ć6.5.129 - March 2000
Note that PLC–2 processors that do not have the block transfer
instruction must use the GET–GET block transfer format which is
outlined in Appendix D.
Figure 3.1
PLC-2 Family Sample Program Structure
EN BLOCK XFER READ
DATA ADDR:
MODULE ADDR:
BLOCK LENGTH:
FILE:
XXX
RGS
XX
XXXX:XXXX
DN
EN FILE TO FILE MOVE
COUNTER ADDR:
POSITION:
FILE LENGTH:
FILE A:
XXX
XXX
XXX
YYYY-XXXX
DN
FILE R:
RATE PER SCAN:
XXX-XXX
XXX
Block Transfer
BTR Done Bit
Power-up
Read Done Bit
Enable
Done
EN BLOCK XFER WRITE
DATA ADDR:
MODULE ADDR:
BLOCK LENGTH:
FILE:
XXX
RGS
XX
XXXX:XXXX
DN
Enable
Done
X7
X7
X6
X6
Bit
Enable
Done
17
15
You can replace the pushbutton with a timer "done" bit to initiate the block transfer
write on a timed basis. You can also use any storage bit in memory.
1
2
3
L
Pushbutton
U
Block Transfer Write
L
Block Transfer Write
Pushbutton
U
Block Transfer Read
Power-up Bit
Done Bit
Done Bit
Done Bit
Power-up Bit
Storage
Bit A
Storage
Bit B
Storage
Bit B
Storage
Bit A
Storage
Bit A
Storage
Bit A
Storage
Bit B
Storage
Bit B
1
1
4
5
6
7
PLC-2 Program Example