Rockwell Automation 1771-PD PID MODULE (+DU) - Manual (Page 167)

Application Example 1, Continuous Block
Transfer
Appendix B
BĆ8
rung 14* When energized, the ready bit resets load/enter one-shot
bit 050/00.
rung 15 The indicator 012/01 illuminates when the load/enter
complete bit 353/12 is low.
rung 16* The enter bit 257/03 is reset when the ready bit 350/12
goes low.
rung 17 Bit 353/07 goes high upon loss of signal at analog input 1.
This in turn sets 257/01 high allowing the analog output to
go to a user programmed value stored in word 2638,
module word W05.
rung 18 Annunicator lamp 012/04 illuminates, via the manual
mode indicating bit 353/05, when the manual control
station is in the manual mode.
rung 19 When selector switch 111/06 is closed, the soft fault reset
bit 257/10, module bit W01 B10, is set.
rung 20 A 4-Digit BCD value residing in data table location 1108
is loaded into the setpoint word of the dynamic block when
pushbutton 111/01 is closed. This rung facilitates user
enter of setpoint values.
NOTE: Although the get/put statement displays only the values of the
first 12 bits in word 1108, it functionally transfers all 16 bits into word
2548.
rung 21* This rung loads the location of the next data block
requested by the module (next block start address) into the
block transfer write instruction.
rung 22* If the power-up bit 350/13 is set, the get instruction fetches
the dynamic block start address stored in word 0378. the
put instruction places the dynamic block start address in
the block transfer write instruction word 1318 (1008 above
data address). This rung will be true only until the first
load/enter sequence is executed. When true, it will
override rung 21.