Rockwell Automation 1771-PD PID MODULE (+DU) - Manual (Page 215)

Application Example 2, Periodic Block
Transfer
Appendix C
CĆ31
TE
TD
T0003
17
T0003
15
TON
TIMER ON
0.1 SECOND
TP =
TA = 25
100
T0003
WB003:0000
15
LBL
00010
OUTPUT ANNUNCIATOR O0013/00 WILL ENERGIZE TO INDICATE A READ BLOCK TRANSFER FAILURE WHEN
RUNG NUMBER RM10
SHOULD A SUCCESSFUL READ BLOCK TRANSFER NOT OCCUR WITHIN THE USER-SPECIFIED PRESET TIME, READ
BLOCK TRANSFER 'WATCHDOG' TIMER WILL 'TIMEĆOUT' TO INDICATE A READ BLOCK TRANSFER FAILURE.
(*NOTE* - RUNG IS CONDITIONED BY AN 'XIO' OF THE READ BLOCK TRANSFER 'DONE' BIT).
00011
T0003
15
LBL
O0013
00
00012
B0061
12
LBL L
W0001:0000
02
RUNG NUMBER RM11
WHEN THE 'LOAD/ENTER COMPLETE' BIT (B:61/12) IS OFF (THIS OCCURS ONLY DURING THE
TIMER T3 TIMES OUT.
RUNG NUMBER RM12
EXECUTION OF A LAOD ENTER SEQUENCE), LATCH STORAGE BIT W0001:0000