Rockwell Automation 1771-PD PID MODULE (+DU) - Manual (Page 214)

Application Example 2, Periodic Block
Transfer
Appendix C
CĆ30
RUNG NUMBER RM7
THIS RUNG READS THE STATUS BLOCK FROM THE 1771-PD MODULE AND TRANSFERS IT INTO A BUFFER
UPON COMPLETION OF A VALID 'READ' OF THE STATUS BLOCK INTO THE BUFFER AREA
STORAGE BIT W0001:0000/01 IS UNLATCHED BY THE READ BLOCK TRANSFER 'DONE' BIT.
00007
W0001:0000
00
W0003:0000
15
LBL
01
FILE (BINARY FILE 2). THIS OCCURS ON A LOAD/ENTER REQUEST (STORAGE BIT W0001:0000/00 SET) OR A TIMER
INITIATED REQUEST (BIT W0001:0000/01 SET). (*NOTE* Ć BLOCK TRANSFER RUNG MUST BE CONDITIONED WITH
AN 'XIO' OF ITS RESPECTIVE 'DONE' BIT.).
EN
DN
ER
CNTL
12
CNTL
15
CNTL
13
RUNG NUMBER RM8
(SIGNIFIED BY AN 'ON' CONDITION OF THE READ BLOCK TRANSFER 'DONE' BIT), THE STATUS BLOCK
IS MOVED FROM THE FBUFFER AREA TO THE USER-SPECIFIED STATUS AREA.
00008
WB003:0000
15
LBL EN
DN
ER
C0001
12
C0001
15
C0001
13
RUNG NUMBER RM9
00009
WB003:0000
15
LBL U
W0001:0000
01
W0001:0000
BTR
BLOCK XFRER READ
RACK:
GROUP:
MODULE:
DATA:
002
1
0 = LOW
FB002:0000
LENGTH: 0
CNTL: FB003:0000
MVF
FILES FROM A TO R
A : FB002:0000
R : FB000:0057
COUNTER:
POS/LEN =
C0001
0/ 18
MODE = ALL/SCAN