Rockwell-automation 1771-DB BASIC MODULE Manual de usuario Pagina 314

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Chapter
Call Routines 69–127
13
13 -56
Example
>1
REM EXAMPLE PROGRAM
>
10 REM ENABLE PLC/SLC UNSOLICITED WRITE INTERRUPT
>
15 PUSH 64: CALL 4: REM SET BLOCK TRANSFER WRITE LENGTH
>
16 PUSH 64: CALL 5: REM SET BLOCK TRANSFER READ LENGTH
>
20 PUSH 1 : REM ENABLE THE CALL
>
30 PUSH 0 : REM BTR BUFFER
>
40 PUSH 1 : REM ALWAYS 1
>
50 PUSH 0 : REM STRING NUMBER – NOT USED
>
60 PUSH 20 : REM MAX ALLOWED WORD LENGTH OF DATA PACKET
>
70 CALL 118
>
80 POP S
>
90 IF (S<>0) THEN PRINT “UNSUCCESSFUL CALL 118 SETUP”
Sample Ladder Logic
BTR
BLOCK TRANSFER READ
Rack
Group
Module
00
1
0
N7:0
N10:10
64
Control Block
Data file
Length
Rung 2:0
17
I:001
Rung 2:1
[END OF FILE]
(EN)
(DN)
(ER)
N
Continuous
N7:0
15
Use CALL 119 to reset the PRT2 port to these default settings:
8 bits/character
1 stop bit
no parity
DCD off
XON-XOFF off
Input and Output Arguments
This routine has no input and no output arguments.
Syntax
CALL
119
Example
>
1 REM EXAMPLE PROGRAM
>
10 CALL 119
>
20 END
CALL
1
19: Reset the PRT2
Port to Default Settings
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