Rockwell Automation 1771-PD PID MODULE (+DU) - Manual (Page 211)

Application Example 2, Periodic Block
Transfer
Appendix C
CĆ27
Figure C.7
PLCĆ3 Periodic Block Transfer Program
00000
THIS ONEĆSHOT TIMER ALLOWS FOR AUTOMATIC EXECUTION OF A LOAD/ENTER SEQUENCE AT PROCESSOR
POWERĆUP IN ORDER TO INITIALIZE THE 1771ĆPD MODULE. ONEĆSHOT BIT T0000/16 IS ONLY ENERGIZED FOR THE FIRST
SCAN OF THE USER PROGRAM AND IS OFF THEREAFTER. IT IS EXAMINED FOR AN 'ON' STATE IN RUNG 4 TO START THE
LOAD/ENTER SEQUENCE.
LBL
RUNG NUMBER RM0
TE
TT
T0000
17
T0000
16
00001
I0012
00
TOS
ONE SHOT
CPU SCANS
TP =
TA =
1
1
T0000
TE
TT
T0001
17
T0001
16
TOS
ONE SHOT
CPU SCANS
TP =
TA =
1
1
T0001
THIS ONEĆSHOT TIMER ALLOWS THE USER TO INITIALIZE A LOAD/ENTER SEQUENCE AT ANY TIME. WHEN
THE USERĆPROVIDED PUSHBUTTON AT ADDRESS I0012 IS CLOSED, A LOAD/ENTER SEQUENCE IS EXECUTED.
ONEĆSHOT BIT T0001/16 IS EXAMINED IN RUNG 4 TO START THE SEQUENCE.
RUNG NUMBER RM1
LBL