Rockwell Automation 1771-PD PID MODULE (+DU) - Manual (Page 168)

Application Example 1, Continuous Block
Transfer
Appendix B
BĆ9
rung 23* The block transfer write instruction will write block data
from the file location loaded into word 1318 to the module
(the file location is determined by rungs 21 and 22). This
instruction is conditioned by the write block transfer done
bit.
rung 24 Timer 0448 is the write block transfer watchdog timer. It
will increment whenever the write block transfer done bit
113/06 is low. Upon completion of a valid write block
transfer, the done bit goes high and resets the timer. The
preset of this timer is user-selectable.
rung 25 Annunicator lamp 012/00 will illuminate when the write
block transfer watchdog timer times out.
*minimum required rungs to program the module
Descriptive Figures and Tables
Refer to the following figures and tables which describe the PLC-2 family
program:
data table information showing the storage and instruction address
(Table B.A)
functional bit/word addresses and descriptions (Table B.B)
data table map showing the dynamic block, loop blocks and status
block locations (NO TAG)
recommended output annunciators, (Table B.C)