Instruction Manual

Application Example 1, Continuous Block
Transfer
Appendix B
B21
Figure B.6
PLC3 Continuous Block T ransfer Program
TE
ONE SHOT
CPU SCANS
TP =
TA =
T0000
1
0
TT
EN
BTR
BLOCK XFER READ
RACK :
GROUP :
MODULE:
002
1
0 = LOW
FB002:0000
DN
0
FB003:0000
ER
DATA :
LENGTH =
CNTL:
]
[
]
[
LBL
I0012
00000
00
TOS
T0000
17
T0000
16
THIS RUNG ENERGIZES T1/16 FOR ONE CPU SCAN WHEN PUSHBUTTON 012/00 IS CLOSED. THIS BIT THEN SETS THE
LOAD" BIT IN RM5 TO INITIATE A LOAD/ENTER SEQUENCE
CNTL
12
CNTL
15
CNTL
13
]
[
]
[LBL
WB003:0000
00001 15
PERFORMS A READ" OF THE STATUS BLOCK FROM THE -PD MODULE AND TRANSFERS THAT BLOCK INTO A USER-SPECIFIED
BUFFER AREA. (*NOTE*-BLOCK TRANSFER RUNG MUST BE CONDITIONED WITH AN XIO" OF ITS' RESPECTIVE DONE" BIT)
EN
MVF
FILES FROM A TO R
A : FB002:0000
R : FB000:0057
COUNTER:
0/ 18
DN
ALL/SCAN
C0006
ER
POS/LEN =
MODE =
C0006
12
15
13
RUNG NUMBER RM0
RUNG NUMBER RM1
C0006
C0006
]
[
]
[LBL
WB003:0000
00002 15
UPON COMPLETION OF A SUCCESSFUL READ" OF THE STATUS BLOCK INTO THE BUFFER AREA, (SIGNIFIED BY AN
ON" CONDITION OF THE READ BLOCK TRANSFER DONE" BIT) THE STATUS BLOCK IS MOVED FROM THE BUFFER TO THE
USER SPECIFIED STATUS AREA.
RUNG NUMBER RM2