Rockwell Automation 1771-PD PID MODULE (+DU) User Manual
Page 165
Application Example 1, Continuous Block
Transfer
Appendix B
BĆ6
113
06
EN
BLOCK XFER WRITE
DATA ADDR:
MODULE ADDR:
BLOCK LENGTH:
FILE:
031
130
00
257 - 356
DN
013
06
113
06
Write Block
Transfer Done Bit
23*
113
06
TON
044
0.1
24
044
15
END 00329
012
00
Output Indicator
25
PR 030
AC 030
WRITE BLOCK TRANSFER
WATCHDOG TIMER AND
INDICATOR
11149
Program Rung Descriptions
rung 1*
Display run. It allows the words pertaining to the module’s
operating characteristics and parameters to be monitored or
changed using the data monitor mode of the industrial
terminal. Because the words are stored in consecutive
files, the position numbers in the data monitor mode will
match the module word numbers.
rungs 2
thru 4*
When pushbutton 111/00 is closed, storage bit 050/00 is
latched. This bit is subsequently used in rung 10 to latch
the load bit and initialize a load/enter sequence. A
load/enter sequence can be initiated at any time. Bit
050/00 is unlatched in rung 14 by the ready bit.
rung 5*
Zeros are loaded into timer/counter address 032 8. The
boundary tells the processor not to look beyond word 0328
for data addresses associated with block transfer
instructions.
rung 6*
The read block transfer instruction reads the next status
block of data set by the module and transfers it to the input