Rockwell-automation 1771-DB BASIC MODULE Manual de usuario Pagina 246

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Chapter
Call Routines 0–68
12
12 -56
Syntax
PUSH
type of DH-485 WRITE command
PUSH
remote DH-485 device node number
PUSH
remote DH-485 device file number
PUSH
remote DH-485 device file type
PUSH
element offset into destination file
PUSH
number of elements to be transferred
PUSH
message time-out value(X100MS)
PUSH
block transfer write buffer
PUSH
1
PUSH
Internal string number
CALL
50
Example
>
10 PUSH 64 : CALL 4 : REM SET BLOCK TRANSFER WRITE LENGTH
>20
PUSH 2 : REM SLC TYPED WRITE
>
30 PUSH 1 : REM REMOTE SLC NODE NUMBER
>
40 PUSH 7 : REM REMOTE SLC FILE NUMBER
>50
PUSH ASC(N) : REM REMOTE SLC FILE TYPE
>
60 PUSH 0 : REM ELEMENT OFFSET INTO DESTINATION FILE
>70
PUSH 20 : REM NUMBER OF ELEMENTS TO BE TRANSFERRED
>80
PUSH 10 : REM MESSAGE TIME-OUT VALUE(X100MS)
>
90 PUSH 0 : REM LOCAL BTW BUFFER
>
100 PUSH 1 : REM ALWAYS 1
>11
0 P
US
H 0 : R
E
M I
NTERNA
L S
TRIN
G N
UMBER–UNUSE
D F
O
R T
HI
S E
XAMPLE
>
120 CALL 50
>
130 POP S
>
140 IF (S=1) THEN PRINT “CALL 50 DISABLED”
>
150 IF (S=2) THEN PRINT “CALL 50 BAD INPUT PARAMETER”
>
160 IF (S=3) THEN PRINT “PORT DH485 NOT ENABLED”
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